TY  - CONF
AU  - Prekodravac, Jovana
AU  - Huskić, Miroslav
AU  - Haddadi, Kamel
AU  - Yasir, Muhammad
AU  - Kepić, Dejan
AU  - Jovanović, Svetlana
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13742
AB  - In the rapid development of microelectronics, energy, and automotive sectors, as well as Radio-Frequency (RF) telecommunications, the pollution from Electromagnetic Waves (EWs) is perpetual. Electromagnetic interferences (EMI) cause destruction and disruptive impacts on equipment and systems, affecting both ordinary use and specialized, expensive instruments utilized in research facilities. The EMI may lead to unreliable signals and radio frequency (RF) interference. Materials capable of neutralizing EMI effects are essential to minimize deterioration caused by undesired currents and voltages, instrument blockage, incorrect results, and to minimize measuring time. The GrInShield project aims to solve the aforesaid issues by creating innovative shieldinqg graphene-based nanomaterials that are resistant against EMI.
PB  - IEEE : Institute of Electrical and Electronics Engineers
C3  - MIKON 2024 : 25th International Microwave and Radar Conference : Proceedings
T1  - GrInShield for Graphene-Based Composites in Electromagnetic Interference Shielding
SP  - 318
EP  - 320
DO  - 10.23919/mikon60251.2024.10633959
ER  - 

@conference{
author = "Prekodravac, Jovana and Huskić, Miroslav and Haddadi, Kamel and Yasir, Muhammad and Kepić, Dejan and Jovanović, Svetlana",
year = "2024",
abstract = "In the rapid development of microelectronics, energy, and automotive sectors, as well as Radio-Frequency (RF) telecommunications, the pollution from Electromagnetic Waves (EWs) is perpetual. Electromagnetic interferences (EMI) cause destruction and disruptive impacts on equipment and systems, affecting both ordinary use and specialized, expensive instruments utilized in research facilities. The EMI may lead to unreliable signals and radio frequency (RF) interference. Materials capable of neutralizing EMI effects are essential to minimize deterioration caused by undesired currents and voltages, instrument blockage, incorrect results, and to minimize measuring time. The GrInShield project aims to solve the aforesaid issues by creating innovative shieldinqg graphene-based nanomaterials that are resistant against EMI.",
publisher = "IEEE : Institute of Electrical and Electronics Engineers",
journal = "MIKON 2024 : 25th International Microwave and Radar Conference : Proceedings",
title = "GrInShield for Graphene-Based Composites in Electromagnetic Interference Shielding",
pages = "318-320",
doi = "10.23919/mikon60251.2024.10633959"
}

Prekodravac, J., Huskić, M., Haddadi, K., Yasir, M., Kepić, D.,& Jovanović, S.. (2024). GrInShield for Graphene-Based Composites in Electromagnetic Interference Shielding. in MIKON 2024 : 25th International Microwave and Radar Conference : Proceedings
IEEE : Institute of Electrical and Electronics Engineers., 318-320.
https://doi.org/10.23919/mikon60251.2024.10633959

Prekodravac J, Huskić M, Haddadi K, Yasir M, Kepić D, Jovanović S. GrInShield for Graphene-Based Composites in Electromagnetic Interference Shielding. in MIKON 2024 : 25th International Microwave and Radar Conference : Proceedings. 2024;:318-320.
doi:10.23919/mikon60251.2024.10633959 .

Prekodravac, Jovana, Huskić, Miroslav, Haddadi, Kamel, Yasir, Muhammad, Kepić, Dejan, Jovanović, Svetlana, "GrInShield for Graphene-Based Composites in Electromagnetic Interference Shielding" in MIKON 2024 : 25th International Microwave and Radar Conference : Proceedings (2024):318-320,
https://doi.org/10.23919/mikon60251.2024.10633959 . .

TY  - CONF
AU  - Jovanović, Svetlana
AU  - Yasir, Muhammad
AU  - Saeed, Warda
AU  - Spanopoulos, Ioannis
AU  - Syrgiannis, Zois
AU  - Milenković, Mila
AU  - Kepić, Dejan
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13726
AB  - Graphene is one of the emerging materials.Its astonishing properties have attracted tremendous attention from various fields, such as medicine, energy, ecology, and electronics.Due to electrical conductivity, tuneability, chemical stability, mechanical strength, and large surface area, over the years the number of its potential applications has increased.In this work, we prepared a derivate of graphene, and graphene oxide using two different methods, classical chemical oxidation of graphite using the modified Hummers method and electrochemical exfoliation of highly ordered pyrolytic graphite.Additionally, biochar was obtained using waste from fruit processing.Their structural properties have been investigated as well as their ability to block the propagation of electromagnetic waves in the low-frequency region (8-12 GHz).
PB  - IEEE : Institute of Electrical and Electronics Engineers
C3  - MARSS 2024 : 7th International Conference on Manipulation, Automation, and Robotics at Small Scales : Proceedings
T1  - Carbon-Based Nanomaterials in Electromagnetic Interference Shielding: Graphene Oxide, Reduced Graphene Oxide, Electrochemically Exfoliated Graphene, and Biomass-Derivated Graphene
DO  - 10.1109/MARSS61851.2024.10612734
ER  - 

@conference{
author = "Jovanović, Svetlana and Yasir, Muhammad and Saeed, Warda and Spanopoulos, Ioannis and Syrgiannis, Zois and Milenković, Mila and Kepić, Dejan",
year = "2024",
abstract = "Graphene is one of the emerging materials.Its astonishing properties have attracted tremendous attention from various fields, such as medicine, energy, ecology, and electronics.Due to electrical conductivity, tuneability, chemical stability, mechanical strength, and large surface area, over the years the number of its potential applications has increased.In this work, we prepared a derivate of graphene, and graphene oxide using two different methods, classical chemical oxidation of graphite using the modified Hummers method and electrochemical exfoliation of highly ordered pyrolytic graphite.Additionally, biochar was obtained using waste from fruit processing.Their structural properties have been investigated as well as their ability to block the propagation of electromagnetic waves in the low-frequency region (8-12 GHz).",
publisher = "IEEE : Institute of Electrical and Electronics Engineers",
journal = "MARSS 2024 : 7th International Conference on Manipulation, Automation, and Robotics at Small Scales : Proceedings",
title = "Carbon-Based Nanomaterials in Electromagnetic Interference Shielding: Graphene Oxide, Reduced Graphene Oxide, Electrochemically Exfoliated Graphene, and Biomass-Derivated Graphene",
doi = "10.1109/MARSS61851.2024.10612734"
}

Jovanović, S., Yasir, M., Saeed, W., Spanopoulos, I., Syrgiannis, Z., Milenković, M.,& Kepić, D.. (2024). Carbon-Based Nanomaterials in Electromagnetic Interference Shielding: Graphene Oxide, Reduced Graphene Oxide, Electrochemically Exfoliated Graphene, and Biomass-Derivated Graphene. in MARSS 2024 : 7th International Conference on Manipulation, Automation, and Robotics at Small Scales : Proceedings
IEEE : Institute of Electrical and Electronics Engineers..
https://doi.org/10.1109/MARSS61851.2024.10612734

Jovanović S, Yasir M, Saeed W, Spanopoulos I, Syrgiannis Z, Milenković M, Kepić D. Carbon-Based Nanomaterials in Electromagnetic Interference Shielding: Graphene Oxide, Reduced Graphene Oxide, Electrochemically Exfoliated Graphene, and Biomass-Derivated Graphene. in MARSS 2024 : 7th International Conference on Manipulation, Automation, and Robotics at Small Scales : Proceedings. 2024;.
doi:10.1109/MARSS61851.2024.10612734 .

Jovanović, Svetlana, Yasir, Muhammad, Saeed, Warda, Spanopoulos, Ioannis, Syrgiannis, Zois, Milenković, Mila, Kepić, Dejan, "Carbon-Based Nanomaterials in Electromagnetic Interference Shielding: Graphene Oxide, Reduced Graphene Oxide, Electrochemically Exfoliated Graphene, and Biomass-Derivated Graphene" in MARSS 2024 : 7th International Conference on Manipulation, Automation, and Robotics at Small Scales : Proceedings (2024),
https://doi.org/10.1109/MARSS61851.2024.10612734 . .

TY  - CONF
AU  - Kepić, Dejan
AU  - Pantić, Ana
AU  - Saeed, Warda
AU  - Yasir, Muhammad
AU  - Jovanović, Svetlana
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13727
AB  - The increasing use of microwave applications in modern society raises serious concerns about electromagnetic wave (EMW) exposure for public health.Furthermore, electromagnetic interferences (EMIs) caused by the cohabitation of high-frequency systems and equipment shorten lifespans and cause electromagnetic perturbations.Thus, there is a great need for lightweight and durable shielding materials that can prevent EMWs.In this paper, we developed composite materials based on a silver nanowire layer sandwiched between layers of graphene oxide or reduced graphene oxide and we studied the obtained composites as potential EMW shielding materials in a broad microwave frequency range.
PB  - IEEE : Institute of Electrical and Electronics Engineers
C3  - MARSS 2024 : 7th International Conference on Manipulation, Automation, and Robotics at Small Scales : Proceedings
T1  - Microwave Electromagnetic Shielding of Free-Standing Composites of Silver Nanowires Sandwiched Between Graphene Oxide or Reduced Graphene Oxide Layers
DO  - 10.1109/MARSS61851.2024.10612748
ER  - 

@conference{
author = "Kepić, Dejan and Pantić, Ana and Saeed, Warda and Yasir, Muhammad and Jovanović, Svetlana",
year = "2024",
abstract = "The increasing use of microwave applications in modern society raises serious concerns about electromagnetic wave (EMW) exposure for public health.Furthermore, electromagnetic interferences (EMIs) caused by the cohabitation of high-frequency systems and equipment shorten lifespans and cause electromagnetic perturbations.Thus, there is a great need for lightweight and durable shielding materials that can prevent EMWs.In this paper, we developed composite materials based on a silver nanowire layer sandwiched between layers of graphene oxide or reduced graphene oxide and we studied the obtained composites as potential EMW shielding materials in a broad microwave frequency range.",
publisher = "IEEE : Institute of Electrical and Electronics Engineers",
journal = "MARSS 2024 : 7th International Conference on Manipulation, Automation, and Robotics at Small Scales : Proceedings",
title = "Microwave Electromagnetic Shielding of Free-Standing Composites of Silver Nanowires Sandwiched Between Graphene Oxide or Reduced Graphene Oxide Layers",
doi = "10.1109/MARSS61851.2024.10612748"
}

Kepić, D., Pantić, A., Saeed, W., Yasir, M.,& Jovanović, S.. (2024). Microwave Electromagnetic Shielding of Free-Standing Composites of Silver Nanowires Sandwiched Between Graphene Oxide or Reduced Graphene Oxide Layers. in MARSS 2024 : 7th International Conference on Manipulation, Automation, and Robotics at Small Scales : Proceedings
IEEE : Institute of Electrical and Electronics Engineers..
https://doi.org/10.1109/MARSS61851.2024.10612748

Kepić D, Pantić A, Saeed W, Yasir M, Jovanović S. Microwave Electromagnetic Shielding of Free-Standing Composites of Silver Nanowires Sandwiched Between Graphene Oxide or Reduced Graphene Oxide Layers. in MARSS 2024 : 7th International Conference on Manipulation, Automation, and Robotics at Small Scales : Proceedings. 2024;.
doi:10.1109/MARSS61851.2024.10612748 .

Kepić, Dejan, Pantić, Ana, Saeed, Warda, Yasir, Muhammad, Jovanović, Svetlana, "Microwave Electromagnetic Shielding of Free-Standing Composites of Silver Nanowires Sandwiched Between Graphene Oxide or Reduced Graphene Oxide Layers" in MARSS 2024 : 7th International Conference on Manipulation, Automation, and Robotics at Small Scales : Proceedings (2024),
https://doi.org/10.1109/MARSS61851.2024.10612748 . .

TY  - JOUR
AU  - Huskić, Miroslav
AU  - Kepić, Dejan
AU  - Kleut, Duška
AU  - Mozetič, Miran
AU  - Vesel, Alenka
AU  - Anžlovar, Alojz
AU  - Bajuk Bogdanović, Danica
AU  - Jovanović, Svetlana
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12874
AB  - The present study focuses on correlations between three parameters: (1) graphite particle
size, (2) the ratio of graphite to oxidizing agent (KMnO4
), and (3) the ratio of graphite to acid
(H2SO4 and H3PO4
), with the reaction yield, structure, and properties of graphene oxide (GO). The
correlations are a challenge, as these three parameters can hardly be separated from each other due to
the variations in the viscosity of the system. The larger the graphite particles, the higher the viscosity
of GO. Decreasing the ratio of graphite to KMnO4
from 1:4 to 1:6 generally leads to a higher degree
of oxidation and a higher reaction yield. However, the differences are very small. Increasing the
graphite-to-acid-volume ratio from 1 g/60 mL to 1 g/80 mL, except for the smallest particles, reduced
the degree of oxidation and slightly reduced the reaction yield. However, the reaction yield mainly
depends on the extent of purification of GO by water, not on the reaction conditions. The large
differences in the thermal decomposition of GO are mainly due to the bulk particle size and less to
other parameters
T2  - Nanomaterials
T1  - The Influence of Reaction Conditions on the Properties of Graphene Oxide
VL  - 14
IS  - 3
SP  - 281
DO  - 10.3390/nano14030281
ER  - 

@article{
author = "Huskić, Miroslav and Kepić, Dejan and Kleut, Duška and Mozetič, Miran and Vesel, Alenka and Anžlovar, Alojz and Bajuk Bogdanović, Danica and Jovanović, Svetlana",
year = "2024",
abstract = "The present study focuses on correlations between three parameters: (1) graphite particle
size, (2) the ratio of graphite to oxidizing agent (KMnO4
), and (3) the ratio of graphite to acid
(H2SO4 and H3PO4
), with the reaction yield, structure, and properties of graphene oxide (GO). The
correlations are a challenge, as these three parameters can hardly be separated from each other due to
the variations in the viscosity of the system. The larger the graphite particles, the higher the viscosity
of GO. Decreasing the ratio of graphite to KMnO4
from 1:4 to 1:6 generally leads to a higher degree
of oxidation and a higher reaction yield. However, the differences are very small. Increasing the
graphite-to-acid-volume ratio from 1 g/60 mL to 1 g/80 mL, except for the smallest particles, reduced
the degree of oxidation and slightly reduced the reaction yield. However, the reaction yield mainly
depends on the extent of purification of GO by water, not on the reaction conditions. The large
differences in the thermal decomposition of GO are mainly due to the bulk particle size and less to
other parameters",
journal = "Nanomaterials",
title = "The Influence of Reaction Conditions on the Properties of Graphene Oxide",
volume = "14",
number = "3",
pages = "281",
doi = "10.3390/nano14030281"
}

Huskić, M., Kepić, D., Kleut, D., Mozetič, M., Vesel, A., Anžlovar, A., Bajuk Bogdanović, D.,& Jovanović, S.. (2024). The Influence of Reaction Conditions on the Properties of Graphene Oxide. in Nanomaterials, 14(3), 281.
https://doi.org/10.3390/nano14030281

Huskić M, Kepić D, Kleut D, Mozetič M, Vesel A, Anžlovar A, Bajuk Bogdanović D, Jovanović S. The Influence of Reaction Conditions on the Properties of Graphene Oxide. in Nanomaterials. 2024;14(3):281.
doi:10.3390/nano14030281 .

Huskić, Miroslav, Kepić, Dejan, Kleut, Duška, Mozetič, Miran, Vesel, Alenka, Anžlovar, Alojz, Bajuk Bogdanović, Danica, Jovanović, Svetlana, "The Influence of Reaction Conditions on the Properties of Graphene Oxide" in Nanomaterials, 14, no. 3 (2024):281,
https://doi.org/10.3390/nano14030281 . .

TY  - CONF
AU  - Jovanović, Svetlana
AU  - Kepić, Dejan
AU  - Huskić, Miroslav
AU  - Yasir, Muhammad
AU  - Haddadi, Kamel
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13188
AB  - In the era of intensive development of microelectronics, energy, and car industries along with Radio-Frequency (RF) telecommunications, the pollution caused by Electromagnetic Waves (EWs) is ever-present. EW interferences (Electromagnetic Interference-EMI) exhibit perturbation and negative impact on devices and systems including those used in everyday life as well as on the specialized, sensitive, and sophisticated instruments used in research laboratories. EMI could cause untrusted signals and RF noise. To prevent these issues, materials able to block or absorb the radiated EWs are urgently required. The GrInShield project is focused on developing new graphene-based shielding nano-materials and increasing researchers' expertise in EMI shielding measuring, protective materials, and possibilities to bring these new products to the market. INTRODUCTION: The GrInShield project uses graphene oxide (GO) obtained by Hummers' reaction and electrochemical exfoliation of graphite [1,2]. We have analysed the factors that affect the shielding efficiency of materials [3] and studied the reaction conditions that lead to obtaining graphene with different sizes and oxygen content [4]. RESULTS AND DISCUSSION: The GrInShield project aims to produce composites of GO with silver nanowires (AgNWs) to develop GO-AgNW composites for EMI shielding applications. To achieve these goals, the project gathers experts from the chemistry of nanomaterials, and polymer processing, along with specialists for near-field microscopy tools and radiofrequency (RF) characterization of materials. CONCLUSIONS: The GrInShield project is developing new nanomaterials for EMI shielding based on carbon nanomaterials, metallic nanomaterials, and polymers. The fabrication of low-cost, sustainable, eco-friendly, durable EMI shielding material should be achieved.
PB  - Belgrade : Association of Chemical Engineers of Serbia
C3  - Hemijska Industrija
T1  - Twinning for graphene-based composites in EMI shielding
VL  - 78
IS  - 1S
SP  - 79
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13188
ER  - 

@conference{
author = "Jovanović, Svetlana and Kepić, Dejan and Huskić, Miroslav and Yasir, Muhammad and Haddadi, Kamel",
year = "2024",
abstract = "In the era of intensive development of microelectronics, energy, and car industries along with Radio-Frequency (RF) telecommunications, the pollution caused by Electromagnetic Waves (EWs) is ever-present. EW interferences (Electromagnetic Interference-EMI) exhibit perturbation and negative impact on devices and systems including those used in everyday life as well as on the specialized, sensitive, and sophisticated instruments used in research laboratories. EMI could cause untrusted signals and RF noise. To prevent these issues, materials able to block or absorb the radiated EWs are urgently required. The GrInShield project is focused on developing new graphene-based shielding nano-materials and increasing researchers' expertise in EMI shielding measuring, protective materials, and possibilities to bring these new products to the market. INTRODUCTION: The GrInShield project uses graphene oxide (GO) obtained by Hummers' reaction and electrochemical exfoliation of graphite [1,2]. We have analysed the factors that affect the shielding efficiency of materials [3] and studied the reaction conditions that lead to obtaining graphene with different sizes and oxygen content [4]. RESULTS AND DISCUSSION: The GrInShield project aims to produce composites of GO with silver nanowires (AgNWs) to develop GO-AgNW composites for EMI shielding applications. To achieve these goals, the project gathers experts from the chemistry of nanomaterials, and polymer processing, along with specialists for near-field microscopy tools and radiofrequency (RF) characterization of materials. CONCLUSIONS: The GrInShield project is developing new nanomaterials for EMI shielding based on carbon nanomaterials, metallic nanomaterials, and polymers. The fabrication of low-cost, sustainable, eco-friendly, durable EMI shielding material should be achieved.",
publisher = "Belgrade : Association of Chemical Engineers of Serbia",
journal = "Hemijska Industrija",
title = "Twinning for graphene-based composites in EMI shielding",
volume = "78",
number = "1S",
pages = "79",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13188"
}

Jovanović, S., Kepić, D., Huskić, M., Yasir, M.,& Haddadi, K.. (2024). Twinning for graphene-based composites in EMI shielding. in Hemijska Industrija
Belgrade : Association of Chemical Engineers of Serbia., 78(1S), 79.
https://hdl.handle.net/21.15107/rcub_vinar_13188

Jovanović S, Kepić D, Huskić M, Yasir M, Haddadi K. Twinning for graphene-based composites in EMI shielding. in Hemijska Industrija. 2024;78(1S):79.
https://hdl.handle.net/21.15107/rcub_vinar_13188 .

Jovanović, Svetlana, Kepić, Dejan, Huskić, Miroslav, Yasir, Muhammad, Haddadi, Kamel, "Twinning for graphene-based composites in EMI shielding" in Hemijska Industrija, 78, no. 1S (2024):79,
https://hdl.handle.net/21.15107/rcub_vinar_13188 .

TY  - CONF
AU  - Prekodravac, Jovana
AU  - Haddadi, Kamel
AU  - Huskić, Miroslav
AU  - Yasir, Muhammad
AU  - Kepić, Dejan
AU  - Jovanović Vučetić, Svetlana P.
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13371
AB  - The ongoing progress in communications, broadcasting systems, and the electronic industry results in increased exposure to electromagnetic interference (EMI). The proliferation of electromagnetic waves pollution is attributed to the extensive use of electronic devices like mobile phones, Wi-Fi, and microwave ovens in everyday activities [1, 2]. The risk of EMI is especially highlighted for individuals with implanted active medical devices or profesionals working in close contact to this type of irradiation. EMI shielding materials with 30 dB shielding efficiency are deemed appropriate for commercial applications based on references. Therefore, there is a strong need for lightweight, elastic, stretchy, transparent, robust, and highly efficient shielding materials that are appropriate for textile manufacturing and equipment covering. Presented work investigated composite materials made of graphene oxides (GO) [3] and silver nanowires (AgNWs) and their effectivenes as EMI shielding materials. Composites were generated from GO with sheet sizes ranging from 150 to 2000 nm and flake thicknesses between 2 and 5 nm. The average thickness of the free-standing films was approximately 14.8 μm. The ratio of these nanomaterials was analysed to adjust the shielding effectiveness throughout a wide microwave frequency range up to 18 GHz. A shielding effectiveness of around 6.5 dB was recorded for the r-GO free-standing film.
C3  - NanoTech Poland 2024 : 14th International Conference NanoTech : Book of Abstracts
T1  - GO-AgNWs free-standing composite films for microwave electromagnetic interference shielding
SP  - 68
EP  - 68
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13371
ER  - 

@conference{
author = "Prekodravac, Jovana and Haddadi, Kamel and Huskić, Miroslav and Yasir, Muhammad and Kepić, Dejan and Jovanović Vučetić, Svetlana P.",
year = "2024",
abstract = "The ongoing progress in communications, broadcasting systems, and the electronic industry results in increased exposure to electromagnetic interference (EMI). The proliferation of electromagnetic waves pollution is attributed to the extensive use of electronic devices like mobile phones, Wi-Fi, and microwave ovens in everyday activities [1, 2]. The risk of EMI is especially highlighted for individuals with implanted active medical devices or profesionals working in close contact to this type of irradiation. EMI shielding materials with 30 dB shielding efficiency are deemed appropriate for commercial applications based on references. Therefore, there is a strong need for lightweight, elastic, stretchy, transparent, robust, and highly efficient shielding materials that are appropriate for textile manufacturing and equipment covering. Presented work investigated composite materials made of graphene oxides (GO) [3] and silver nanowires (AgNWs) and their effectivenes as EMI shielding materials. Composites were generated from GO with sheet sizes ranging from 150 to 2000 nm and flake thicknesses between 2 and 5 nm. The average thickness of the free-standing films was approximately 14.8 μm. The ratio of these nanomaterials was analysed to adjust the shielding effectiveness throughout a wide microwave frequency range up to 18 GHz. A shielding effectiveness of around 6.5 dB was recorded for the r-GO free-standing film.",
journal = "NanoTech Poland 2024 : 14th International Conference NanoTech : Book of Abstracts",
title = "GO-AgNWs free-standing composite films for microwave electromagnetic interference shielding",
pages = "68-68",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13371"
}

Prekodravac, J., Haddadi, K., Huskić, M., Yasir, M., Kepić, D.,& Jovanović Vučetić, S. P.. (2024). GO-AgNWs free-standing composite films for microwave electromagnetic interference shielding. in NanoTech Poland 2024 : 14th International Conference NanoTech : Book of Abstracts, 68-68.
https://hdl.handle.net/21.15107/rcub_vinar_13371

Prekodravac J, Haddadi K, Huskić M, Yasir M, Kepić D, Jovanović Vučetić SP. GO-AgNWs free-standing composite films for microwave electromagnetic interference shielding. in NanoTech Poland 2024 : 14th International Conference NanoTech : Book of Abstracts. 2024;:68-68.
https://hdl.handle.net/21.15107/rcub_vinar_13371 .

Prekodravac, Jovana, Haddadi, Kamel, Huskić, Miroslav, Yasir, Muhammad, Kepić, Dejan, Jovanović Vučetić, Svetlana P., "GO-AgNWs free-standing composite films for microwave electromagnetic interference shielding" in NanoTech Poland 2024 : 14th International Conference NanoTech : Book of Abstracts (2024):68-68,
https://hdl.handle.net/21.15107/rcub_vinar_13371 .

TY  - JOUR
AU  - Stefanović, Anđela
AU  - Kepić, Dejan
AU  - Momčilović, Miloš
AU  - Mead, James L.
AU  - Huskić, Miroslav
AU  - Haddadi, Kamel
AU  - Sebbache, Mohamed
AU  - Todorović Marković, Biljana
AU  - Jovanović, Svetlana
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13387
AB  - Silver nanoparticles (Ag NPs) have been produced by low-dose (1–20 kGy) gamma irradiation of silver nitrate in the presence of graphene-based material (graphene oxide or electrochemically exfoliated graphene). The large surface area of those graphene-based materials combined with the presence of oxygen-containing functional groups on the surface provided successful nucleation and growth of Ag nanoparticles, which resulted in a uniformly covered graphene surface. The obtained Ag nanoparticles were spherical with a predominant size distribution of 10–50 nm for graphene oxide and 10–100 nm for electrochemically exfoliated graphene. The photothermal efficiency measurement showed a temperature increase upon exposure to a 532 nm laser for all samples and the highest photothermal efficiency was measured for the graphene oxide/Ag NP sample prepared at 5 kGy. Electromagnetic interference (EMI) shielding efficiency measurements showed poor shielding for the composites prepared with graphene oxide. On the other hand, all composites prepared with electrochemically exfoliated graphene showed EMI shielding to some extent, and the best performance was measured for the samples prepared at 5 and 20 kGy doses.
T2  - Nanomaterials
T1  - Determination of Photothermal and EMI Shielding Efficiency of Graphene–Silver Nanoparticle Composites Prepared under Low-Dose Gamma Irradiation
VL  - 14
IS  - 11
SP  - 912
DO  - 10.3390/nano14110912
ER  - 

@article{
author = "Stefanović, Anđela and Kepić, Dejan and Momčilović, Miloš and Mead, James L. and Huskić, Miroslav and Haddadi, Kamel and Sebbache, Mohamed and Todorović Marković, Biljana and Jovanović, Svetlana",
year = "2024",
abstract = "Silver nanoparticles (Ag NPs) have been produced by low-dose (1–20 kGy) gamma irradiation of silver nitrate in the presence of graphene-based material (graphene oxide or electrochemically exfoliated graphene). The large surface area of those graphene-based materials combined with the presence of oxygen-containing functional groups on the surface provided successful nucleation and growth of Ag nanoparticles, which resulted in a uniformly covered graphene surface. The obtained Ag nanoparticles were spherical with a predominant size distribution of 10–50 nm for graphene oxide and 10–100 nm for electrochemically exfoliated graphene. The photothermal efficiency measurement showed a temperature increase upon exposure to a 532 nm laser for all samples and the highest photothermal efficiency was measured for the graphene oxide/Ag NP sample prepared at 5 kGy. Electromagnetic interference (EMI) shielding efficiency measurements showed poor shielding for the composites prepared with graphene oxide. On the other hand, all composites prepared with electrochemically exfoliated graphene showed EMI shielding to some extent, and the best performance was measured for the samples prepared at 5 and 20 kGy doses.",
journal = "Nanomaterials",
title = "Determination of Photothermal and EMI Shielding Efficiency of Graphene–Silver Nanoparticle Composites Prepared under Low-Dose Gamma Irradiation",
volume = "14",
number = "11",
pages = "912",
doi = "10.3390/nano14110912"
}

Stefanović, A., Kepić, D., Momčilović, M., Mead, J. L., Huskić, M., Haddadi, K., Sebbache, M., Todorović Marković, B.,& Jovanović, S.. (2024). Determination of Photothermal and EMI Shielding Efficiency of Graphene–Silver Nanoparticle Composites Prepared under Low-Dose Gamma Irradiation. in Nanomaterials, 14(11), 912.
https://doi.org/10.3390/nano14110912

Stefanović A, Kepić D, Momčilović M, Mead JL, Huskić M, Haddadi K, Sebbache M, Todorović Marković B, Jovanović S. Determination of Photothermal and EMI Shielding Efficiency of Graphene–Silver Nanoparticle Composites Prepared under Low-Dose Gamma Irradiation. in Nanomaterials. 2024;14(11):912.
doi:10.3390/nano14110912 .

Stefanović, Anđela, Kepić, Dejan, Momčilović, Miloš, Mead, James L., Huskić, Miroslav, Haddadi, Kamel, Sebbache, Mohamed, Todorović Marković, Biljana, Jovanović, Svetlana, "Determination of Photothermal and EMI Shielding Efficiency of Graphene–Silver Nanoparticle Composites Prepared under Low-Dose Gamma Irradiation" in Nanomaterials, 14, no. 11 (2024):912,
https://doi.org/10.3390/nano14110912 . .

TY  - JOUR
AU  - Kepić, Dejan P.
AU  - Stefanović, Anđela
AU  - Budimir, Milica
AU  - Pavlović, Vladimir B.
AU  - Bonasera, Aurelio
AU  - Scopelliti, Michelangelo
AU  - Todorović-Marković, Biljana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10426
AB  - Gamma irradiation provides an alternative pathway to conventional gold nanoparticle synthesis because it is simple, fast, and economical. Here, we employed gamma irradiation at low doses (1–20 kGy) to obtain gold nanoparticles (Au NPs) anchored onto graphene oxide (GO) sheets. GO was selected as a suitable platform for the nucleation and growth of Au NPs because of its large surface area and good dispersibility in water due to the presence of polar oxygen-containing functional groups in its structure. Gamma irradiation at all the applied doses led to the reduction of chloroauric acid and the formation of evenly distributed Au NPs at the GO surface, simultaneously causing the reduction of GO and partial restoration of the graphene structure. As-prepared Au NPs have predominately spheric shapes and the smallest nanoparticles were reported for the dose of 1 kGy. The increase in the irradiation dose caused either the growth of larger particles (5 and 10 kGy) or the broad distribution of particles’ sizes (20 kGy). All samples showed a temperature increase upon exposure to 800 nm laser and photothermal efficiency was the highest for the sample prepared at 20 kGy. © 2022 Elsevier Ltd
T2  - Radiation Physics and Chemistry
T1  - Gamma rays induced synthesis of graphene oxide/gold nanoparticle composites: structural and photothermal study
VL  - 202
DO  - 10.1016/j.radphyschem.2022.110545
ER  - 

@article{
author = "Kepić, Dejan P. and Stefanović, Anđela and Budimir, Milica and Pavlović, Vladimir B. and Bonasera, Aurelio and Scopelliti, Michelangelo and Todorović-Marković, Biljana",
year = "2023",
abstract = "Gamma irradiation provides an alternative pathway to conventional gold nanoparticle synthesis because it is simple, fast, and economical. Here, we employed gamma irradiation at low doses (1–20 kGy) to obtain gold nanoparticles (Au NPs) anchored onto graphene oxide (GO) sheets. GO was selected as a suitable platform for the nucleation and growth of Au NPs because of its large surface area and good dispersibility in water due to the presence of polar oxygen-containing functional groups in its structure. Gamma irradiation at all the applied doses led to the reduction of chloroauric acid and the formation of evenly distributed Au NPs at the GO surface, simultaneously causing the reduction of GO and partial restoration of the graphene structure. As-prepared Au NPs have predominately spheric shapes and the smallest nanoparticles were reported for the dose of 1 kGy. The increase in the irradiation dose caused either the growth of larger particles (5 and 10 kGy) or the broad distribution of particles’ sizes (20 kGy). All samples showed a temperature increase upon exposure to 800 nm laser and photothermal efficiency was the highest for the sample prepared at 20 kGy. © 2022 Elsevier Ltd",
journal = "Radiation Physics and Chemistry",
title = "Gamma rays induced synthesis of graphene oxide/gold nanoparticle composites: structural and photothermal study",
volume = "202",
doi = "10.1016/j.radphyschem.2022.110545"
}

Kepić, D. P., Stefanović, A., Budimir, M., Pavlović, V. B., Bonasera, A., Scopelliti, M.,& Todorović-Marković, B.. (2023). Gamma rays induced synthesis of graphene oxide/gold nanoparticle composites: structural and photothermal study. in Radiation Physics and Chemistry, 202.
https://doi.org/10.1016/j.radphyschem.2022.110545

Kepić DP, Stefanović A, Budimir M, Pavlović VB, Bonasera A, Scopelliti M, Todorović-Marković B. Gamma rays induced synthesis of graphene oxide/gold nanoparticle composites: structural and photothermal study. in Radiation Physics and Chemistry. 2023;202.
doi:10.1016/j.radphyschem.2022.110545 .

Kepić, Dejan P., Stefanović, Anđela, Budimir, Milica, Pavlović, Vladimir B., Bonasera, Aurelio, Scopelliti, Michelangelo, Todorović-Marković, Biljana, "Gamma rays induced synthesis of graphene oxide/gold nanoparticle composites: structural and photothermal study" in Radiation Physics and Chemistry, 202 (2023),
https://doi.org/10.1016/j.radphyschem.2022.110545 . .

TY  - JOUR
AU  - Jovanović, Svetlana P.
AU  - Marković, Zoran M.
AU  - Budimir, Milica
AU  - Prekodravac, Jovana
AU  - Zmejkoski, Danica
AU  - Kepić, Dejan
AU  - Bonasera, Aurelio
AU  - Todorović-Marković, Biljana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10926
AB  - The large number of deaths induced by carcinoma and infections indicates that the need for new, better, targeted therapy is higher than ever. Apart from classical treatments and medication, photodynamic therapy (PDT) is one of the possible approaches to cure these clinical conditions. This strategy offers several advantages, such as lower toxicity, selective treatment, faster recovery time, avoidance of systemic toxic effects, and others. Unfortunately, there is a small number of agents that are approved for usage in clinical PDT. Novel, efficient, biocompatible PDT agents are, thus, highly desired. One of the most promising candidates is represented by the broad family of carbon-based quantum dots, such as graphene quantum dots (GQDs), carbon quantum dots (CQDs), carbon nanodots (CNDs), and carbonized polymer dots (CPDs). In this review paper, these new smart nanomaterials are discussed as potential PDT agents, detailing their toxicity in the dark, and when they are exposed to light, as well as their effects on carcinoma and bacterial cells. The photoinduced effects of carbon-based quantum dots on bacteria and viruses are particularly interesting, since dots usually generate several highly toxic reactive oxygen species under blue light. These species are acting as bombs on pathogen cells, causing various devastating and toxic effects on those targets.
T2  - Pharmaceutics
T1  - Lights and Dots toward Therapy—Carbon-Based Quantum Dots as New Agents for Photodynamic Therapy
VL  - 15
IS  - 4
SP  - 1170
DO  - 10.3390/pharmaceutics15041170
ER  - 

@article{
author = "Jovanović, Svetlana P. and Marković, Zoran M. and Budimir, Milica and Prekodravac, Jovana and Zmejkoski, Danica and Kepić, Dejan and Bonasera, Aurelio and Todorović-Marković, Biljana",
year = "2023",
abstract = "The large number of deaths induced by carcinoma and infections indicates that the need for new, better, targeted therapy is higher than ever. Apart from classical treatments and medication, photodynamic therapy (PDT) is one of the possible approaches to cure these clinical conditions. This strategy offers several advantages, such as lower toxicity, selective treatment, faster recovery time, avoidance of systemic toxic effects, and others. Unfortunately, there is a small number of agents that are approved for usage in clinical PDT. Novel, efficient, biocompatible PDT agents are, thus, highly desired. One of the most promising candidates is represented by the broad family of carbon-based quantum dots, such as graphene quantum dots (GQDs), carbon quantum dots (CQDs), carbon nanodots (CNDs), and carbonized polymer dots (CPDs). In this review paper, these new smart nanomaterials are discussed as potential PDT agents, detailing their toxicity in the dark, and when they are exposed to light, as well as their effects on carcinoma and bacterial cells. The photoinduced effects of carbon-based quantum dots on bacteria and viruses are particularly interesting, since dots usually generate several highly toxic reactive oxygen species under blue light. These species are acting as bombs on pathogen cells, causing various devastating and toxic effects on those targets.",
journal = "Pharmaceutics",
title = "Lights and Dots toward Therapy—Carbon-Based Quantum Dots as New Agents for Photodynamic Therapy",
volume = "15",
number = "4",
pages = "1170",
doi = "10.3390/pharmaceutics15041170"
}

Jovanović, S. P., Marković, Z. M., Budimir, M., Prekodravac, J., Zmejkoski, D., Kepić, D., Bonasera, A.,& Todorović-Marković, B.. (2023). Lights and Dots toward Therapy—Carbon-Based Quantum Dots as New Agents for Photodynamic Therapy. in Pharmaceutics, 15(4), 1170.
https://doi.org/10.3390/pharmaceutics15041170

Jovanović SP, Marković ZM, Budimir M, Prekodravac J, Zmejkoski D, Kepić D, Bonasera A, Todorović-Marković B. Lights and Dots toward Therapy—Carbon-Based Quantum Dots as New Agents for Photodynamic Therapy. in Pharmaceutics. 2023;15(4):1170.
doi:10.3390/pharmaceutics15041170 .

Jovanović, Svetlana P., Marković, Zoran M., Budimir, Milica, Prekodravac, Jovana, Zmejkoski, Danica, Kepić, Dejan, Bonasera, Aurelio, Todorović-Marković, Biljana, "Lights and Dots toward Therapy—Carbon-Based Quantum Dots as New Agents for Photodynamic Therapy" in Pharmaceutics, 15, no. 4 (2023):1170,
https://doi.org/10.3390/pharmaceutics15041170 . .

TY  - CONF
AU  - Stefanović, Anđela
AU  - Kepić, Dejan
AU  - Jovanović Vučetić, Svetlana
AU  - Haddadi, Kamel
AU  - Todorović Marković, Biljana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12320
AB  - Silver nitrate has been exposed to low-dose (1–20 kGy) gamma irradiation in the presence of graphene-based material (graphene oxide or electrochemically exfoliated graphene) to form silver nanoparticles (Ag NPs). The successful nucleation and growth of Ag NPs, which produce the evenly covered graphene surface, are made possible by the vast surface area of those graphene-based materials as well as the presence of oxygen-containing functional groups on the surface. With a significant size distribution of 10–50 nm for graphene oxide and 10–100 nm for electrochemically exfoliated graphene, the produced Ag NPs were spherical. We also performed ElectroMagnetic Interference (EMI) shielding performance measurements of these materials. EMI shielding performance measurement revealed relatively good performance of the EEG material whereas GO material does not show EM shielding.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
T1  - Measurement of EMI shielding perfomance of graphene oxide – silver nanoparticles composites
SP  - 47
EP  - 47
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12320
ER  - 

@conference{
author = "Stefanović, Anđela and Kepić, Dejan and Jovanović Vučetić, Svetlana and Haddadi, Kamel and Todorović Marković, Biljana",
year = "2023",
abstract = "Silver nitrate has been exposed to low-dose (1–20 kGy) gamma irradiation in the presence of graphene-based material (graphene oxide or electrochemically exfoliated graphene) to form silver nanoparticles (Ag NPs). The successful nucleation and growth of Ag NPs, which produce the evenly covered graphene surface, are made possible by the vast surface area of those graphene-based materials as well as the presence of oxygen-containing functional groups on the surface. With a significant size distribution of 10–50 nm for graphene oxide and 10–100 nm for electrochemically exfoliated graphene, the produced Ag NPs were spherical. We also performed ElectroMagnetic Interference (EMI) shielding performance measurements of these materials. EMI shielding performance measurement revealed relatively good performance of the EEG material whereas GO material does not show EM shielding.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts",
title = "Measurement of EMI shielding perfomance of graphene oxide – silver nanoparticles composites",
pages = "47-47",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12320"
}

Stefanović, A., Kepić, D., Jovanović Vučetić, S., Haddadi, K.,& Todorović Marković, B.. (2023). Measurement of EMI shielding perfomance of graphene oxide – silver nanoparticles composites. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
Belgrade : Institute of Technical Sciences of SASA., 47-47.
https://hdl.handle.net/21.15107/rcub_vinar_12320

Stefanović A, Kepić D, Jovanović Vučetić S, Haddadi K, Todorović Marković B. Measurement of EMI shielding perfomance of graphene oxide – silver nanoparticles composites. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts. 2023;:47-47.
https://hdl.handle.net/21.15107/rcub_vinar_12320 .

Stefanović, Anđela, Kepić, Dejan, Jovanović Vučetić, Svetlana, Haddadi, Kamel, Todorović Marković, Biljana, "Measurement of EMI shielding perfomance of graphene oxide – silver nanoparticles composites" in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts (2023):47-47,
https://hdl.handle.net/21.15107/rcub_vinar_12320 .

TY  - JOUR
AU  - Jovanović, Svetlana
AU  - Huskić, Miroslav
AU  - Kepić, Dejan
AU  - Yasir, Muhammad
AU  - Haddadi, Kamel
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12607
AB  - As wireless solutions for communication, information, and sensing in modern society, electromagnetic waves (EMWs) have contributed considerably to the increase in the quality of people’s everyday lives. At the same time, EMWs produce electromagnetic pollution, issues with electromagnetic interference (EMI), and radio frequency (RF) signal leakage. These circumstances lead to high demand for efficient EMI shielding materials.  To design an EMI shielding product, a compromise must be achieved between the electromagnetic shielding efficiency, the thickness of shielding materials, durability, mechanical strength, reduced volume and weight, and elasticity. Due to its ability to block EMWs, flexibility, lightweight, and chemical resistivity, graphene has been identified as a promising candidate material for efficient EMI shielding. Herein, we reviewed the studies that investigated various graphene-based composites as potential EMI shielding materials, with a focus on the composites based on graphene and silver nanowires due to their high EMI shielding efficiency, low production price, and favorable mechanical properties.
T2  - Graphene and 2D Materials
T1  - A review on graphene and graphene composites for application in electromagnetic shielding
VL  - 8
IS  - 3-4
SP  - 59
EP  - 80
DO  - 10.1007/s41127-023-00065-3
ER  - 

@article{
author = "Jovanović, Svetlana and Huskić, Miroslav and Kepić, Dejan and Yasir, Muhammad and Haddadi, Kamel",
year = "2023",
abstract = "As wireless solutions for communication, information, and sensing in modern society, electromagnetic waves (EMWs) have contributed considerably to the increase in the quality of people’s everyday lives. At the same time, EMWs produce electromagnetic pollution, issues with electromagnetic interference (EMI), and radio frequency (RF) signal leakage. These circumstances lead to high demand for efficient EMI shielding materials.  To design an EMI shielding product, a compromise must be achieved between the electromagnetic shielding efficiency, the thickness of shielding materials, durability, mechanical strength, reduced volume and weight, and elasticity. Due to its ability to block EMWs, flexibility, lightweight, and chemical resistivity, graphene has been identified as a promising candidate material for efficient EMI shielding. Herein, we reviewed the studies that investigated various graphene-based composites as potential EMI shielding materials, with a focus on the composites based on graphene and silver nanowires due to their high EMI shielding efficiency, low production price, and favorable mechanical properties.",
journal = "Graphene and 2D Materials",
title = "A review on graphene and graphene composites for application in electromagnetic shielding",
volume = "8",
number = "3-4",
pages = "59-80",
doi = "10.1007/s41127-023-00065-3"
}

Jovanović, S., Huskić, M., Kepić, D., Yasir, M.,& Haddadi, K.. (2023). A review on graphene and graphene composites for application in electromagnetic shielding. in Graphene and 2D Materials, 8(3-4), 59-80.
https://doi.org/10.1007/s41127-023-00065-3

Jovanović S, Huskić M, Kepić D, Yasir M, Haddadi K. A review on graphene and graphene composites for application in electromagnetic shielding. in Graphene and 2D Materials. 2023;8(3-4):59-80.
doi:10.1007/s41127-023-00065-3 .

Jovanović, Svetlana, Huskić, Miroslav, Kepić, Dejan, Yasir, Muhammad, Haddadi, Kamel, "A review on graphene and graphene composites for application in electromagnetic shielding" in Graphene and 2D Materials, 8, no. 3-4 (2023):59-80,
https://doi.org/10.1007/s41127-023-00065-3 . .

TY  - CHAP
AU  - Kepić, Dejan
AU  - Giannakoudakis, Dimitrios A.
AU  - Prekodravac, Jovana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13258
AB  - Accumulation of disposable plastic products with an estimated life-time of at least 400 years overcomes the world's capability to deal with them. Only a relatively small portion of plastics is being recycled mostly due to their chemical composition and high remanufacturing cost. Consequently, plastic waste accumulation in the environment became one of the most pressing environmental problems of the XXI century leading to the rapid increase in the plastic pollution crisis, with a characteristic example to be the Oceans “plastic” island. The possibility of plastic waste conversion into valuable materials such as graphene, a 2D nanomaterial with extraordinary properties and potential for utilization for a plethora of applications from electronics to biomedicine, could be a key technology in promoting green and sustainable alternatives. This chapter aims to underline the prospects and limitations of plastic waste conversion into graphene/graphite and graphene-based nanomaterials (Graphical Abstract). An emphasis would be given to the type of the source material, and the correlation of their chemical nature toward the quality and quantity of the obtained graphene nanomaterial. Furthermore, through a comparison of the conventional methods and precursors for graphene production to the plastic waste upcycling method, the ecological impact of used chemicals and byproducts will be discussed. Finally, the overview of the potential application of the produced graphene and graphene-based nanomaterials as well as the prospects of using waste materials for graphene production will be introduced.
PB  - Elsevier
T2  - Graphene Extraction from Waste: A Sustainable Synthesis Approach for Graphene and its Derivatives
T1  - Green sustainable approach toward plastic waste upcycling to graphene-based nanomaterials
IS  - Ch. 4
SP  - 77
EP  - 115
DO  - 10.1016/B978-0-323-90914-3.00008-5
ER  - 

@inbook{
author = "Kepić, Dejan and Giannakoudakis, Dimitrios A. and Prekodravac, Jovana",
year = "2023",
abstract = "Accumulation of disposable plastic products with an estimated life-time of at least 400 years overcomes the world's capability to deal with them. Only a relatively small portion of plastics is being recycled mostly due to their chemical composition and high remanufacturing cost. Consequently, plastic waste accumulation in the environment became one of the most pressing environmental problems of the XXI century leading to the rapid increase in the plastic pollution crisis, with a characteristic example to be the Oceans “plastic” island. The possibility of plastic waste conversion into valuable materials such as graphene, a 2D nanomaterial with extraordinary properties and potential for utilization for a plethora of applications from electronics to biomedicine, could be a key technology in promoting green and sustainable alternatives. This chapter aims to underline the prospects and limitations of plastic waste conversion into graphene/graphite and graphene-based nanomaterials (Graphical Abstract). An emphasis would be given to the type of the source material, and the correlation of their chemical nature toward the quality and quantity of the obtained graphene nanomaterial. Furthermore, through a comparison of the conventional methods and precursors for graphene production to the plastic waste upcycling method, the ecological impact of used chemicals and byproducts will be discussed. Finally, the overview of the potential application of the produced graphene and graphene-based nanomaterials as well as the prospects of using waste materials for graphene production will be introduced.",
publisher = "Elsevier",
journal = "Graphene Extraction from Waste: A Sustainable Synthesis Approach for Graphene and its Derivatives",
booktitle = "Green sustainable approach toward plastic waste upcycling to graphene-based nanomaterials",
number = "Ch. 4",
pages = "77-115",
doi = "10.1016/B978-0-323-90914-3.00008-5"
}

Kepić, D., Giannakoudakis, D. A.,& Prekodravac, J.. (2023). Green sustainable approach toward plastic waste upcycling to graphene-based nanomaterials. in Graphene Extraction from Waste: A Sustainable Synthesis Approach for Graphene and its Derivatives
Elsevier.(Ch. 4), 77-115.
https://doi.org/10.1016/B978-0-323-90914-3.00008-5

Kepić D, Giannakoudakis DA, Prekodravac J. Green sustainable approach toward plastic waste upcycling to graphene-based nanomaterials. in Graphene Extraction from Waste: A Sustainable Synthesis Approach for Graphene and its Derivatives. 2023;(Ch. 4):77-115.
doi:10.1016/B978-0-323-90914-3.00008-5 .

Kepić, Dejan, Giannakoudakis, Dimitrios A., Prekodravac, Jovana, "Green sustainable approach toward plastic waste upcycling to graphene-based nanomaterials" in Graphene Extraction from Waste: A Sustainable Synthesis Approach for Graphene and its Derivatives, no. Ch. 4 (2023):77-115,
https://doi.org/10.1016/B978-0-323-90914-3.00008-5 . .

TY  - CONF
AU  - Stefanović, Anđela
AU  - Kepić, Dejan
AU  - Huskić, Miroslav
AU  - Haddadi, Kamel
AU  - Sebbache, Mohamed
AU  - Jovanović Vučetić, Svetlana P.
AU  - Todorović-Marković, Biljana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13605
AB  - Graphene and its derivatives have become the scientific community's focus due to their remarkable electronic, mechanical, and optical properties. In this work, we prepared two graphene-based materials, graphene oxide (GO) and electrochemically exfoliated graphene (EEG), and performed morphological and structural analysis. Both materials showed good dispersibility in water. GO is composed of mainly single- and few-layer graphene sheets, while EEG is predominately multi-layer graphene. EEG showed better thermal stability under nitrogen flow compared to GO. We also performed ElectroMagnetic Interference (EMI) shielding performance measurements of these materials.
PB  - Szeged : University of Szeged
C3  - 29th International Symposium on Analytical and Environmental Problems : Proceedings
T1  - Measurement of EMI Shielding Performance of Graphene Oxide and Electrochemically Exfoliated Graphene Thin Films
SP  - 314
EP  - 318
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13605
ER  - 

@conference{
author = "Stefanović, Anđela and Kepić, Dejan and Huskić, Miroslav and Haddadi, Kamel and Sebbache, Mohamed and Jovanović Vučetić, Svetlana P. and Todorović-Marković, Biljana",
year = "2023",
abstract = "Graphene and its derivatives have become the scientific community's focus due to their remarkable electronic, mechanical, and optical properties. In this work, we prepared two graphene-based materials, graphene oxide (GO) and electrochemically exfoliated graphene (EEG), and performed morphological and structural analysis. Both materials showed good dispersibility in water. GO is composed of mainly single- and few-layer graphene sheets, while EEG is predominately multi-layer graphene. EEG showed better thermal stability under nitrogen flow compared to GO. We also performed ElectroMagnetic Interference (EMI) shielding performance measurements of these materials.",
publisher = "Szeged : University of Szeged",
journal = "29th International Symposium on Analytical and Environmental Problems : Proceedings",
title = "Measurement of EMI Shielding Performance of Graphene Oxide and Electrochemically Exfoliated Graphene Thin Films",
pages = "314-318",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13605"
}

Stefanović, A., Kepić, D., Huskić, M., Haddadi, K., Sebbache, M., Jovanović Vučetić, S. P.,& Todorović-Marković, B.. (2023). Measurement of EMI Shielding Performance of Graphene Oxide and Electrochemically Exfoliated Graphene Thin Films. in 29th International Symposium on Analytical and Environmental Problems : Proceedings
Szeged : University of Szeged., 314-318.
https://hdl.handle.net/21.15107/rcub_vinar_13605

Stefanović A, Kepić D, Huskić M, Haddadi K, Sebbache M, Jovanović Vučetić SP, Todorović-Marković B. Measurement of EMI Shielding Performance of Graphene Oxide and Electrochemically Exfoliated Graphene Thin Films. in 29th International Symposium on Analytical and Environmental Problems : Proceedings. 2023;:314-318.
https://hdl.handle.net/21.15107/rcub_vinar_13605 .

Stefanović, Anđela, Kepić, Dejan, Huskić, Miroslav, Haddadi, Kamel, Sebbache, Mohamed, Jovanović Vučetić, Svetlana P., Todorović-Marković, Biljana, "Measurement of EMI Shielding Performance of Graphene Oxide and Electrochemically Exfoliated Graphene Thin Films" in 29th International Symposium on Analytical and Environmental Problems : Proceedings (2023):314-318,
https://hdl.handle.net/21.15107/rcub_vinar_13605 .

TY  - JOUR
AU  - Mišović, Aleksandra
AU  - Bajuk-Bogdanović, Danica V.
AU  - Kepić, Dejan
AU  - Pavlović, Vladimir B.
AU  - Huskić, Miroslav
AU  - Hasheminejad, Navid
AU  - Vuye, Cedric
AU  - Zorić, Nemanja
AU  - Jovanović, Svetlana P.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10078
AB  - The need for stable, chemical resistant and conductive materials is on the rise in recent times. Graphene shows promising electrical conductivity and chemical stability, but the production of a continual, conductive layer is limited and expensive. Silver nanowires (AgNWs) are both conducive and economically viable, but they are sensitive to water and oxygen. In this study, graphene oxide (GO) and AgNWs were synthesized and combined in different mass ratios (3:1, 2.5:1.5, and 1:1) to obtain chemically stable composites with improved electrical properties. Composites were reduced using ascorbic acid. With the increase of AgNWs to GO mass ratio, the surface of the free-standing composite film improved: the root mean square roughness was lowered from 376 nm for GO to 168 nm for the composite with the mass ratio of GO:AgNWs 1:1, while the sheet resistance was lowered from 146 × 106 Ω/□ to 4 Ω/□. For the first time, the effects of gamma irradiation on the structure of the composites were studied. Doses of 15, 25, and 35 kGy were applied.
T2  - Synthetic Metals
T1  - Properties of free-standing graphene oxide/silver nanowires films and effects of chemical reduction and gamma irradiation
VL  - 283
SP  - 116980
DO  - 10.1016/j.synthmet.2021.116980
ER  - 

@article{
author = "Mišović, Aleksandra and Bajuk-Bogdanović, Danica V. and Kepić, Dejan and Pavlović, Vladimir B. and Huskić, Miroslav and Hasheminejad, Navid and Vuye, Cedric and Zorić, Nemanja and Jovanović, Svetlana P.",
year = "2022",
abstract = "The need for stable, chemical resistant and conductive materials is on the rise in recent times. Graphene shows promising electrical conductivity and chemical stability, but the production of a continual, conductive layer is limited and expensive. Silver nanowires (AgNWs) are both conducive and economically viable, but they are sensitive to water and oxygen. In this study, graphene oxide (GO) and AgNWs were synthesized and combined in different mass ratios (3:1, 2.5:1.5, and 1:1) to obtain chemically stable composites with improved electrical properties. Composites were reduced using ascorbic acid. With the increase of AgNWs to GO mass ratio, the surface of the free-standing composite film improved: the root mean square roughness was lowered from 376 nm for GO to 168 nm for the composite with the mass ratio of GO:AgNWs 1:1, while the sheet resistance was lowered from 146 × 106 Ω/□ to 4 Ω/□. For the first time, the effects of gamma irradiation on the structure of the composites were studied. Doses of 15, 25, and 35 kGy were applied.",
journal = "Synthetic Metals",
title = "Properties of free-standing graphene oxide/silver nanowires films and effects of chemical reduction and gamma irradiation",
volume = "283",
pages = "116980",
doi = "10.1016/j.synthmet.2021.116980"
}

Mišović, A., Bajuk-Bogdanović, D. V., Kepić, D., Pavlović, V. B., Huskić, M., Hasheminejad, N., Vuye, C., Zorić, N.,& Jovanović, S. P.. (2022). Properties of free-standing graphene oxide/silver nanowires films and effects of chemical reduction and gamma irradiation. in Synthetic Metals, 283, 116980.
https://doi.org/10.1016/j.synthmet.2021.116980

Mišović A, Bajuk-Bogdanović DV, Kepić D, Pavlović VB, Huskić M, Hasheminejad N, Vuye C, Zorić N, Jovanović SP. Properties of free-standing graphene oxide/silver nanowires films and effects of chemical reduction and gamma irradiation. in Synthetic Metals. 2022;283:116980.
doi:10.1016/j.synthmet.2021.116980 .

Mišović, Aleksandra, Bajuk-Bogdanović, Danica V., Kepić, Dejan, Pavlović, Vladimir B., Huskić, Miroslav, Hasheminejad, Navid, Vuye, Cedric, Zorić, Nemanja, Jovanović, Svetlana P., "Properties of free-standing graphene oxide/silver nanowires films and effects of chemical reduction and gamma irradiation" in Synthetic Metals, 283 (2022):116980,
https://doi.org/10.1016/j.synthmet.2021.116980 . .

TY  - CHAP
AU  - Prekodravac, Jovana
AU  - Giannakoudakis, Dimitrios A.
AU  - Colmenares, Juan Carlos
AU  - Nair, Vaishakh
AU  - Vasiljević, Bojana
AU  - Kepić, Dejan
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10547
AB  - Environmental protection and energy conversion by state-of-the-art photocatalysts emerge as imperative in pursuit for ideal, sustainable, and green oriented solutions. However, major drawbacks in broader application of one of the most promising semiconductor photocatalyst, titanium dioxide (TiO2), lie in the need for enhancing visible-light absorption and elevating the photocatalytic reactivity. Toward these directions, narrowing the material band gap and functionalization of the surface chemistry are among the most prosperous materials design approaches. As reported in earlier work, the surface structure engineering proved to be an encouraging approach to endow optical and electrical properties of the TiO2-based material. For the first time, the black powder of TiO2 with a disordered lattice and hydrogen surface doping was obtained through hydrogenation under high pressure and temperature, consequently leading to narrowing the optical band gap to 1.54eV. The presented chapter aims to reveal in-depth all the literature available information related to the black titania synthesis in addition of sharing in details its prosperous physicochemical properties. Feature information related to the photocatalytic activity of black TiO2 as well as of the most crucial features will also be provided. Finally, the chapter will conclude with the derived significant benefits of such material properties in photocatalytic treatment of organic pollutants and hydrogen production. © 2023 Elsevier Inc. All rights reserved.
T2  - Novel Materials for Environmental Remediation Applications: Adsorption and Beyond
T1  - Black titania: Turning the surface chemistry toward visible-light absorption, (photo) remediation of hazardous organics and H2 production
SP  - 361
EP  - 398
DO  - 10.1016/B978-0-323-91894-7.00010-4
ER  - 

@inbook{
author = "Prekodravac, Jovana and Giannakoudakis, Dimitrios A. and Colmenares, Juan Carlos and Nair, Vaishakh and Vasiljević, Bojana and Kepić, Dejan",
year = "2022",
abstract = "Environmental protection and energy conversion by state-of-the-art photocatalysts emerge as imperative in pursuit for ideal, sustainable, and green oriented solutions. However, major drawbacks in broader application of one of the most promising semiconductor photocatalyst, titanium dioxide (TiO2), lie in the need for enhancing visible-light absorption and elevating the photocatalytic reactivity. Toward these directions, narrowing the material band gap and functionalization of the surface chemistry are among the most prosperous materials design approaches. As reported in earlier work, the surface structure engineering proved to be an encouraging approach to endow optical and electrical properties of the TiO2-based material. For the first time, the black powder of TiO2 with a disordered lattice and hydrogen surface doping was obtained through hydrogenation under high pressure and temperature, consequently leading to narrowing the optical band gap to 1.54eV. The presented chapter aims to reveal in-depth all the literature available information related to the black titania synthesis in addition of sharing in details its prosperous physicochemical properties. Feature information related to the photocatalytic activity of black TiO2 as well as of the most crucial features will also be provided. Finally, the chapter will conclude with the derived significant benefits of such material properties in photocatalytic treatment of organic pollutants and hydrogen production. © 2023 Elsevier Inc. All rights reserved.",
journal = "Novel Materials for Environmental Remediation Applications: Adsorption and Beyond",
booktitle = "Black titania: Turning the surface chemistry toward visible-light absorption, (photo) remediation of hazardous organics and H2 production",
pages = "361-398",
doi = "10.1016/B978-0-323-91894-7.00010-4"
}

Prekodravac, J., Giannakoudakis, D. A., Colmenares, J. C., Nair, V., Vasiljević, B.,& Kepić, D.. (2022). Black titania: Turning the surface chemistry toward visible-light absorption, (photo) remediation of hazardous organics and H2 production. in Novel Materials for Environmental Remediation Applications: Adsorption and Beyond, 361-398.
https://doi.org/10.1016/B978-0-323-91894-7.00010-4

Prekodravac J, Giannakoudakis DA, Colmenares JC, Nair V, Vasiljević B, Kepić D. Black titania: Turning the surface chemistry toward visible-light absorption, (photo) remediation of hazardous organics and H2 production. in Novel Materials for Environmental Remediation Applications: Adsorption and Beyond. 2022;:361-398.
doi:10.1016/B978-0-323-91894-7.00010-4 .

Prekodravac, Jovana, Giannakoudakis, Dimitrios A., Colmenares, Juan Carlos, Nair, Vaishakh, Vasiljević, Bojana, Kepić, Dejan, "Black titania: Turning the surface chemistry toward visible-light absorption, (photo) remediation of hazardous organics and H2 production" in Novel Materials for Environmental Remediation Applications: Adsorption and Beyond (2022):361-398,
https://doi.org/10.1016/B978-0-323-91894-7.00010-4 . .

TY  - CONF
AU  - Stefanović, Anđela
AU  - Kepić, Dejan
AU  - Budimir, Milica
AU  - Todorović-Marković, Biljana
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13612
AB  - Although ultrasound is frequently used to disperse carbon nanomaterials in suitable solvents, the propagation of high-amplitude ultrasonic vibrations from the tip sonicator was found to be aggressive and has the potential to break down graphene sheets. Here, the effects of tip sonication time on structural and morphological properties of two types of graphene (graphene oxide and electrochemically exfoliated graphene) was investigated by UV-vis spectroscopy and Atomic Force Microscopy. It was found that the structural composition of the graphene was not affected by ultrasounds emitted from the tip sonicator even for the prolonged period of sonication (60 min). Microscopy analysis showed an increased portion of smaller graphene sheets in the sonicated samples for both types of graphene as a result of graphene sheet fragmentation caused by tip sonication.
PB  - Szeged : University of Szeged
C3  - 28th International Symposium on Analytical and Environmental Problems : Proceedings
T1  - The Influence of Tip Sonication on Structural and Morphological Properties of Graphene
SP  - 323
EP  - 327
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13612
ER  - 

@conference{
author = "Stefanović, Anđela and Kepić, Dejan and Budimir, Milica and Todorović-Marković, Biljana",
year = "2022",
abstract = "Although ultrasound is frequently used to disperse carbon nanomaterials in suitable solvents, the propagation of high-amplitude ultrasonic vibrations from the tip sonicator was found to be aggressive and has the potential to break down graphene sheets. Here, the effects of tip sonication time on structural and morphological properties of two types of graphene (graphene oxide and electrochemically exfoliated graphene) was investigated by UV-vis spectroscopy and Atomic Force Microscopy. It was found that the structural composition of the graphene was not affected by ultrasounds emitted from the tip sonicator even for the prolonged period of sonication (60 min). Microscopy analysis showed an increased portion of smaller graphene sheets in the sonicated samples for both types of graphene as a result of graphene sheet fragmentation caused by tip sonication.",
publisher = "Szeged : University of Szeged",
journal = "28th International Symposium on Analytical and Environmental Problems : Proceedings",
title = "The Influence of Tip Sonication on Structural and Morphological Properties of Graphene",
pages = "323-327",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13612"
}

Stefanović, A., Kepić, D., Budimir, M.,& Todorović-Marković, B.. (2022). The Influence of Tip Sonication on Structural and Morphological Properties of Graphene. in 28th International Symposium on Analytical and Environmental Problems : Proceedings
Szeged : University of Szeged., 323-327.
https://hdl.handle.net/21.15107/rcub_vinar_13612

Stefanović A, Kepić D, Budimir M, Todorović-Marković B. The Influence of Tip Sonication on Structural and Morphological Properties of Graphene. in 28th International Symposium on Analytical and Environmental Problems : Proceedings. 2022;:323-327.
https://hdl.handle.net/21.15107/rcub_vinar_13612 .

Stefanović, Anđela, Kepić, Dejan, Budimir, Milica, Todorović-Marković, Biljana, "The Influence of Tip Sonication on Structural and Morphological Properties of Graphene" in 28th International Symposium on Analytical and Environmental Problems : Proceedings (2022):323-327,
https://hdl.handle.net/21.15107/rcub_vinar_13612 .

TY  - JOUR
AU  - Kepić, Dejan P.
AU  - Kleut, Duška
AU  - Marković, Zoran M.
AU  - Bajuk-Bogdanović, Danica V.
AU  - Pavlović, Vladimir B.
AU  - Krmpot, Aleksandar
AU  - Lekić, Marina
AU  - Jovanović, Dragana J.
AU  - Todorović-Marković, Biljana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9568
AB  - Graphene is an excellent material to anchor metal nanoparticles due to its large surface area. In this paper, we report the use of electrochemically exfoliated graphene as support to anchor gold nanoparticles (Au NPs). Au NPs are synthesized via the reduction of chloroauric acid under gamma irradiation at low doses of 1, 5, and 10 kGy and directly deposited onto the graphene surface, making this procedure simple and fast. Good water dispersibility of exfoliated graphene, due to the presence of oxygen-containing functional groups in the structure of graphene, provides long-term stability of Au NPs - graphene composite dispersions. The majority of the Au NPs obtained by this method have sizes of up to 40 nm, while the increase in the applied dose leads to an increase in the amount of smaller nanoparticles. The increase of temperature of the prepared composite material upon irradiation with an 808 nm continuous wave laser was monitored. All samples show a temperature increase between 21.5 and 25.6 °C for 10 min of the laser exposure, which indicates that Au NPs - graphene composite can effectively be used in photothermal treatment for cancer therapy. © 2021 Elsevier Inc.
T2  - Materials Characterization
T1  - One-step preparation of gold nanoparticles - exfoliated graphene composite by gamma irradiation at low doses for photothermal therapy applications
VL  - 173
SP  - 110944
DO  - 10.1016/j.matchar.2021.110944
ER  - 

@article{
author = "Kepić, Dejan P. and Kleut, Duška and Marković, Zoran M. and Bajuk-Bogdanović, Danica V. and Pavlović, Vladimir B. and Krmpot, Aleksandar and Lekić, Marina and Jovanović, Dragana J. and Todorović-Marković, Biljana",
year = "2021",
abstract = "Graphene is an excellent material to anchor metal nanoparticles due to its large surface area. In this paper, we report the use of electrochemically exfoliated graphene as support to anchor gold nanoparticles (Au NPs). Au NPs are synthesized via the reduction of chloroauric acid under gamma irradiation at low doses of 1, 5, and 10 kGy and directly deposited onto the graphene surface, making this procedure simple and fast. Good water dispersibility of exfoliated graphene, due to the presence of oxygen-containing functional groups in the structure of graphene, provides long-term stability of Au NPs - graphene composite dispersions. The majority of the Au NPs obtained by this method have sizes of up to 40 nm, while the increase in the applied dose leads to an increase in the amount of smaller nanoparticles. The increase of temperature of the prepared composite material upon irradiation with an 808 nm continuous wave laser was monitored. All samples show a temperature increase between 21.5 and 25.6 °C for 10 min of the laser exposure, which indicates that Au NPs - graphene composite can effectively be used in photothermal treatment for cancer therapy. © 2021 Elsevier Inc.",
journal = "Materials Characterization",
title = "One-step preparation of gold nanoparticles - exfoliated graphene composite by gamma irradiation at low doses for photothermal therapy applications",
volume = "173",
pages = "110944",
doi = "10.1016/j.matchar.2021.110944"
}

Kepić, D. P., Kleut, D., Marković, Z. M., Bajuk-Bogdanović, D. V., Pavlović, V. B., Krmpot, A., Lekić, M., Jovanović, D. J.,& Todorović-Marković, B.. (2021). One-step preparation of gold nanoparticles - exfoliated graphene composite by gamma irradiation at low doses for photothermal therapy applications. in Materials Characterization, 173, 110944.
https://doi.org/10.1016/j.matchar.2021.110944

Kepić DP, Kleut D, Marković ZM, Bajuk-Bogdanović DV, Pavlović VB, Krmpot A, Lekić M, Jovanović DJ, Todorović-Marković B. One-step preparation of gold nanoparticles - exfoliated graphene composite by gamma irradiation at low doses for photothermal therapy applications. in Materials Characterization. 2021;173:110944.
doi:10.1016/j.matchar.2021.110944 .

Kepić, Dejan P., Kleut, Duška, Marković, Zoran M., Bajuk-Bogdanović, Danica V., Pavlović, Vladimir B., Krmpot, Aleksandar, Lekić, Marina, Jovanović, Dragana J., Todorović-Marković, Biljana, "One-step preparation of gold nanoparticles - exfoliated graphene composite by gamma irradiation at low doses for photothermal therapy applications" in Materials Characterization, 173 (2021):110944,
https://doi.org/10.1016/j.matchar.2021.110944 . .

TY  - JOUR
AU  - Prekodravac, Jovana
AU  - Kepić, Dejan P.
AU  - Colmenares, Juan Carlos
AU  - Giannakoudakis, Dimitrios A.
AU  - Jovanović, Svetlana P.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9837
AB  - The progressive development of technology and industry in the new millennium emergently requires finding a balance between economic progress and new smart materials. Graphene as a carbon allotrope since the discovery has attracted enormous attention due to several extraordinary properties that originate from its physical and chemical assets. However, the most important obstacle in graphene assembly still is the production of high-quality graphene on a large scale using cost-effective methods. The presented review article aims to give information on a turning point in graphene synthesis, with reference to a detailed analysis of electrochemical exfoliation, rapid thermal annealing and biomass pyrolysis. Selected methods for graphene and graphene-based nanomaterials production were not covered in the literature to their maximum potential, from our point of view. Through an overview of the selected synthesis methods, we explored their prospects and limitations regarding precursor type and reaction conditions. Furthermore, through several important characterization techniques for graphene, we reveal the details of the properties of graphene and graphene-based nanomaterials obtained through selected methods. Finally, a particular potential application depending on nanomaterial properties obtained through selected methods was pointed out.
T2  - Journal of Materials Chemistry C
T1  - A comprehensive review on selected graphene synthesis methods: from electrochemical exfoliation through rapid thermal annealing towards biomass pyrolysis
VL  - 9
IS  - 21
SP  - 6722
EP  - 6748
DO  - 10.1039/D1TC01316E
ER  - 

@article{
author = "Prekodravac, Jovana and Kepić, Dejan P. and Colmenares, Juan Carlos and Giannakoudakis, Dimitrios A. and Jovanović, Svetlana P.",
year = "2021",
abstract = "The progressive development of technology and industry in the new millennium emergently requires finding a balance between economic progress and new smart materials. Graphene as a carbon allotrope since the discovery has attracted enormous attention due to several extraordinary properties that originate from its physical and chemical assets. However, the most important obstacle in graphene assembly still is the production of high-quality graphene on a large scale using cost-effective methods. The presented review article aims to give information on a turning point in graphene synthesis, with reference to a detailed analysis of electrochemical exfoliation, rapid thermal annealing and biomass pyrolysis. Selected methods for graphene and graphene-based nanomaterials production were not covered in the literature to their maximum potential, from our point of view. Through an overview of the selected synthesis methods, we explored their prospects and limitations regarding precursor type and reaction conditions. Furthermore, through several important characterization techniques for graphene, we reveal the details of the properties of graphene and graphene-based nanomaterials obtained through selected methods. Finally, a particular potential application depending on nanomaterial properties obtained through selected methods was pointed out.",
journal = "Journal of Materials Chemistry C",
title = "A comprehensive review on selected graphene synthesis methods: from electrochemical exfoliation through rapid thermal annealing towards biomass pyrolysis",
volume = "9",
number = "21",
pages = "6722-6748",
doi = "10.1039/D1TC01316E"
}

Prekodravac, J., Kepić, D. P., Colmenares, J. C., Giannakoudakis, D. A.,& Jovanović, S. P.. (2021). A comprehensive review on selected graphene synthesis methods: from electrochemical exfoliation through rapid thermal annealing towards biomass pyrolysis. in Journal of Materials Chemistry C, 9(21), 6722-6748.
https://doi.org/10.1039/D1TC01316E

Prekodravac J, Kepić DP, Colmenares JC, Giannakoudakis DA, Jovanović SP. A comprehensive review on selected graphene synthesis methods: from electrochemical exfoliation through rapid thermal annealing towards biomass pyrolysis. in Journal of Materials Chemistry C. 2021;9(21):6722-6748.
doi:10.1039/D1TC01316E .

Prekodravac, Jovana, Kepić, Dejan P., Colmenares, Juan Carlos, Giannakoudakis, Dimitrios A., Jovanović, Svetlana P., "A comprehensive review on selected graphene synthesis methods: from electrochemical exfoliation through rapid thermal annealing towards biomass pyrolysis" in Journal of Materials Chemistry C, 9, no. 21 (2021):6722-6748,
https://doi.org/10.1039/D1TC01316E . .

TY  - CONF
AU  - Kepić, Dejan
AU  - Huskić, Miroslav
AU  - Prekodravac, Jovana
AU  - Kleut, Duška
AU  - Todorović-Marković, Biljana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11421
AB  - This article investigates the morphology of polyaniline/electrochemically exfoliated graphene composites prepared by oxidative polymerization with ammonium persulfate at a constant temperature (15 °C). During the polymerization, the pH of the reaction mixture decreases, which was used to monitor the rate of the reaction. A granular morphology with the presence of large sheet-like structures is found to be predominant for the composite prepared without added acid, while rod-shaped and tubular morphology is characteristic for the composite prepared with the addition of glacial acetic acid. The nanotubular and nanorod morphology of the sample prepared with the addition of glacial acetic acid was also confirmed by the presence of prominent phenazine structural units in Raman spectra. The composite prepared with the addition of HCl has granular morphology with a small amount of rod-like structures.
PB  - Szeged : University of Szeged
C3  - 27th International Symposium on Analytical and Environmental Problems : Proceedings; November 22-23, 2021; Szeged, Hungary
T1  - The Morphology of Pani/Graphene Composites Prepared Under Isothermal Conditions
SP  - 159
EP  - 163
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11421
ER  - 

@conference{
author = "Kepić, Dejan and Huskić, Miroslav and Prekodravac, Jovana and Kleut, Duška and Todorović-Marković, Biljana",
year = "2021",
abstract = "This article investigates the morphology of polyaniline/electrochemically exfoliated graphene composites prepared by oxidative polymerization with ammonium persulfate at a constant temperature (15 °C). During the polymerization, the pH of the reaction mixture decreases, which was used to monitor the rate of the reaction. A granular morphology with the presence of large sheet-like structures is found to be predominant for the composite prepared without added acid, while rod-shaped and tubular morphology is characteristic for the composite prepared with the addition of glacial acetic acid. The nanotubular and nanorod morphology of the sample prepared with the addition of glacial acetic acid was also confirmed by the presence of prominent phenazine structural units in Raman spectra. The composite prepared with the addition of HCl has granular morphology with a small amount of rod-like structures.",
publisher = "Szeged : University of Szeged",
journal = "27th International Symposium on Analytical and Environmental Problems : Proceedings; November 22-23, 2021; Szeged, Hungary",
title = "The Morphology of Pani/Graphene Composites Prepared Under Isothermal Conditions",
pages = "159-163",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11421"
}

Kepić, D., Huskić, M., Prekodravac, J., Kleut, D.,& Todorović-Marković, B.. (2021). The Morphology of Pani/Graphene Composites Prepared Under Isothermal Conditions. in 27th International Symposium on Analytical and Environmental Problems : Proceedings; November 22-23, 2021; Szeged, Hungary
Szeged : University of Szeged., 159-163.
https://hdl.handle.net/21.15107/rcub_vinar_11421

Kepić D, Huskić M, Prekodravac J, Kleut D, Todorović-Marković B. The Morphology of Pani/Graphene Composites Prepared Under Isothermal Conditions. in 27th International Symposium on Analytical and Environmental Problems : Proceedings; November 22-23, 2021; Szeged, Hungary. 2021;:159-163.
https://hdl.handle.net/21.15107/rcub_vinar_11421 .

Kepić, Dejan, Huskić, Miroslav, Prekodravac, Jovana, Kleut, Duška, Todorović-Marković, Biljana, "The Morphology of Pani/Graphene Composites Prepared Under Isothermal Conditions" in 27th International Symposium on Analytical and Environmental Problems : Proceedings; November 22-23, 2021; Szeged, Hungary (2021):159-163,
https://hdl.handle.net/21.15107/rcub_vinar_11421 .

TY  - CONF
AU  - Prekodravac, Jovana
AU  - Vasiljević, Bojana
AU  - Marinković, Dragana
AU  - Kepić, Dejan
AU  - Kleut, Duška
AU  - Todorović Marković, Biljana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11427
AB  - The modern age science is still searching for an effective photocatalytic material for the treatment of colored discharges from different industries which cause severe environmental issues. The excellent properties of nitrogen doped carbon quantum dots (N-CQD) enable their successful application as photocatalytic material in organic dye removal triggered under light absorption. With this in mind we first present a successfully performed microwave-assisted synthesis method, a green, simple and economically affordable method for N-CQD synthesis with high nitrogen percentage incorporated in the form of pyrrolic, pyridinic/NH2 and graphitic/NH3+ groups. The pro-oxidant and antioxidant features of the synthesized N-CQD were further presented, with high removal efficiency of synthesized N-CQD towards the methylene blue (MB) organic dye, as one of the leading water pollutants with a major risk to aquatic and human life.
PB  - Szeged : University of Szeged
C3  - 27th International Symposium on Analytical and Environmental Problems : Proceedings; November 22-23, 2021; Szeged, Hungary
T1  - Antioxidant and Prooxidant Features of N-CQD in Photocatalytic Testing of Aquatic Media
SP  - 286
EP  - 290
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11427
ER  - 

@conference{
author = "Prekodravac, Jovana and Vasiljević, Bojana and Marinković, Dragana and Kepić, Dejan and Kleut, Duška and Todorović Marković, Biljana",
year = "2021",
abstract = "The modern age science is still searching for an effective photocatalytic material for the treatment of colored discharges from different industries which cause severe environmental issues. The excellent properties of nitrogen doped carbon quantum dots (N-CQD) enable their successful application as photocatalytic material in organic dye removal triggered under light absorption. With this in mind we first present a successfully performed microwave-assisted synthesis method, a green, simple and economically affordable method for N-CQD synthesis with high nitrogen percentage incorporated in the form of pyrrolic, pyridinic/NH2 and graphitic/NH3+ groups. The pro-oxidant and antioxidant features of the synthesized N-CQD were further presented, with high removal efficiency of synthesized N-CQD towards the methylene blue (MB) organic dye, as one of the leading water pollutants with a major risk to aquatic and human life.",
publisher = "Szeged : University of Szeged",
journal = "27th International Symposium on Analytical and Environmental Problems : Proceedings; November 22-23, 2021; Szeged, Hungary",
title = "Antioxidant and Prooxidant Features of N-CQD in Photocatalytic Testing of Aquatic Media",
pages = "286-290",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11427"
}

Prekodravac, J., Vasiljević, B., Marinković, D., Kepić, D., Kleut, D.,& Todorović Marković, B.. (2021). Antioxidant and Prooxidant Features of N-CQD in Photocatalytic Testing of Aquatic Media. in 27th International Symposium on Analytical and Environmental Problems : Proceedings; November 22-23, 2021; Szeged, Hungary
Szeged : University of Szeged., 286-290.
https://hdl.handle.net/21.15107/rcub_vinar_11427

Prekodravac J, Vasiljević B, Marinković D, Kepić D, Kleut D, Todorović Marković B. Antioxidant and Prooxidant Features of N-CQD in Photocatalytic Testing of Aquatic Media. in 27th International Symposium on Analytical and Environmental Problems : Proceedings; November 22-23, 2021; Szeged, Hungary. 2021;:286-290.
https://hdl.handle.net/21.15107/rcub_vinar_11427 .

Prekodravac, Jovana, Vasiljević, Bojana, Marinković, Dragana, Kepić, Dejan, Kleut, Duška, Todorović Marković, Biljana, "Antioxidant and Prooxidant Features of N-CQD in Photocatalytic Testing of Aquatic Media" in 27th International Symposium on Analytical and Environmental Problems : Proceedings; November 22-23, 2021; Szeged, Hungary (2021):286-290,
https://hdl.handle.net/21.15107/rcub_vinar_11427 .

TY  - CONF
AU  - Kepić, Dejan
AU  - Prekodravac, Jovana
AU  - Vasiljević, Bojana
AU  - Jovanović, Dragana J.
AU  - Kleut, Duška
AU  - Todorović-Marković, Biljana
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13621
AB  - Wastewater treatment is an emerging problem in the industrialized world. The development of new semiconducting materials with the potential to be used in photocatalysis is the focus of the scientific community. Here, we present the synthesis of N-doped carbon quantum dots (N- CQDs) using microwave radiation. N-CQDs were synthesized by irradiation of glucose solution in the presence of ammonia hydroxide as a nitrogen doping agent at low temperature (100 °C), low applied microwave power (100 and 200 W), and for a short period of time (60 s). The possible application of N-CQDs as a catalyst for photocatalytic degradation of Methylene Blue (MB) dye under blue light, green light, red light, and daylight was investigated. The highest values of MB degradation were observed for the samples exposed to red light with a maximum of 58.8 % for N-CQDs sample prepared at the reactor power of 200 W exposed to red light for 2 h.
PB  - Szeged : University of Szeged
C3  - 26th International Symposium on Analytical and Environmental Problems : Proceedings
T1  - Microwave-Assisted Synthesis of N-Doped Carbon Quantum Dots for the Photocatalytic Removal of Methylene Blue From Wastewater
SP  - 196
EP  - 199
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13621
ER  - 

@conference{
author = "Kepić, Dejan and Prekodravac, Jovana and Vasiljević, Bojana and Jovanović, Dragana J. and Kleut, Duška and Todorović-Marković, Biljana",
year = "2020",
abstract = "Wastewater treatment is an emerging problem in the industrialized world. The development of new semiconducting materials with the potential to be used in photocatalysis is the focus of the scientific community. Here, we present the synthesis of N-doped carbon quantum dots (N- CQDs) using microwave radiation. N-CQDs were synthesized by irradiation of glucose solution in the presence of ammonia hydroxide as a nitrogen doping agent at low temperature (100 °C), low applied microwave power (100 and 200 W), and for a short period of time (60 s). The possible application of N-CQDs as a catalyst for photocatalytic degradation of Methylene Blue (MB) dye under blue light, green light, red light, and daylight was investigated. The highest values of MB degradation were observed for the samples exposed to red light with a maximum of 58.8 % for N-CQDs sample prepared at the reactor power of 200 W exposed to red light for 2 h.",
publisher = "Szeged : University of Szeged",
journal = "26th International Symposium on Analytical and Environmental Problems : Proceedings",
title = "Microwave-Assisted Synthesis of N-Doped Carbon Quantum Dots for the Photocatalytic Removal of Methylene Blue From Wastewater",
pages = "196-199",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13621"
}

Kepić, D., Prekodravac, J., Vasiljević, B., Jovanović, D. J., Kleut, D.,& Todorović-Marković, B.. (2020). Microwave-Assisted Synthesis of N-Doped Carbon Quantum Dots for the Photocatalytic Removal of Methylene Blue From Wastewater. in 26th International Symposium on Analytical and Environmental Problems : Proceedings
Szeged : University of Szeged., 196-199.
https://hdl.handle.net/21.15107/rcub_vinar_13621

Kepić D, Prekodravac J, Vasiljević B, Jovanović DJ, Kleut D, Todorović-Marković B. Microwave-Assisted Synthesis of N-Doped Carbon Quantum Dots for the Photocatalytic Removal of Methylene Blue From Wastewater. in 26th International Symposium on Analytical and Environmental Problems : Proceedings. 2020;:196-199.
https://hdl.handle.net/21.15107/rcub_vinar_13621 .

Kepić, Dejan, Prekodravac, Jovana, Vasiljević, Bojana, Jovanović, Dragana J., Kleut, Duška, Todorović-Marković, Biljana, "Microwave-Assisted Synthesis of N-Doped Carbon Quantum Dots for the Photocatalytic Removal of Methylene Blue From Wastewater" in 26th International Symposium on Analytical and Environmental Problems : Proceedings (2020):196-199,
https://hdl.handle.net/21.15107/rcub_vinar_13621 .

TY  - CONF
AU  - Prekodravac, Jovana
AU  - Vasiljević, Bojana
AU  - Jovanović, Dragana J.
AU  - Kepić, Dejan
AU  - Jovanović Vučetić, Svetlana
AU  - Budimir, Milica
AU  - Todorović-Marković, Biljana
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13622
AB  - Industries today realis high amounts of different hazards into the environment without any pre– treatment, which is why the remediation from organic pollution still represents one of the most important issues in waste water treatment. Organic dyes from textile industry are one of the extremely geno‒toxic and cyto‒toxic pollutants. Thus, finding the appropriate photocatalyst for the treatment of contaminated water under sunlight is still a challenging work from economical and green chemistry approach. Here we present a microwave assisted synthesis of nitrogen doped carbon quantum dots with high efficiency in degradation of Rose Bengal organic dye from water under visible, blue, green and red light irradiation in batch system. The effect of microwave irradiation power and time on size and photocatalytic activity of synthesized dots were also investigated.
PB  - Szeged : University of Szeged
C3  - 26th International Symposium on Analytical and Environmental Problems : Proceedings
T1  - Microwave Synthesis of N‒CQDs: Effect of Wavelength on Degradation of Organic Pollution in Water
SP  - 297
EP  - 301
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13622
ER  - 

@conference{
author = "Prekodravac, Jovana and Vasiljević, Bojana and Jovanović, Dragana J. and Kepić, Dejan and Jovanović Vučetić, Svetlana and Budimir, Milica and Todorović-Marković, Biljana",
year = "2020",
abstract = "Industries today realis high amounts of different hazards into the environment without any pre– treatment, which is why the remediation from organic pollution still represents one of the most important issues in waste water treatment. Organic dyes from textile industry are one of the extremely geno‒toxic and cyto‒toxic pollutants. Thus, finding the appropriate photocatalyst for the treatment of contaminated water under sunlight is still a challenging work from economical and green chemistry approach. Here we present a microwave assisted synthesis of nitrogen doped carbon quantum dots with high efficiency in degradation of Rose Bengal organic dye from water under visible, blue, green and red light irradiation in batch system. The effect of microwave irradiation power and time on size and photocatalytic activity of synthesized dots were also investigated.",
publisher = "Szeged : University of Szeged",
journal = "26th International Symposium on Analytical and Environmental Problems : Proceedings",
title = "Microwave Synthesis of N‒CQDs: Effect of Wavelength on Degradation of Organic Pollution in Water",
pages = "297-301",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13622"
}

Prekodravac, J., Vasiljević, B., Jovanović, D. J., Kepić, D., Jovanović Vučetić, S., Budimir, M.,& Todorović-Marković, B.. (2020). Microwave Synthesis of N‒CQDs: Effect of Wavelength on Degradation of Organic Pollution in Water. in 26th International Symposium on Analytical and Environmental Problems : Proceedings
Szeged : University of Szeged., 297-301.
https://hdl.handle.net/21.15107/rcub_vinar_13622

Prekodravac J, Vasiljević B, Jovanović DJ, Kepić D, Jovanović Vučetić S, Budimir M, Todorović-Marković B. Microwave Synthesis of N‒CQDs: Effect of Wavelength on Degradation of Organic Pollution in Water. in 26th International Symposium on Analytical and Environmental Problems : Proceedings. 2020;:297-301.
https://hdl.handle.net/21.15107/rcub_vinar_13622 .

Prekodravac, Jovana, Vasiljević, Bojana, Jovanović, Dragana J., Kepić, Dejan, Jovanović Vučetić, Svetlana, Budimir, Milica, Todorović-Marković, Biljana, "Microwave Synthesis of N‒CQDs: Effect of Wavelength on Degradation of Organic Pollution in Water" in 26th International Symposium on Analytical and Environmental Problems : Proceedings (2020):297-301,
https://hdl.handle.net/21.15107/rcub_vinar_13622 .

TY  - JOUR
AU  - Kepić, Dejan P.
AU  - Ristić, Ivan S.
AU  - Marinović-Cincović, Milena
AU  - Peruško, Davor
AU  - Špitalsky, Zdenko
AU  - Pavlović, Vladimir B.
AU  - Budimir, Milica
AU  - Šiffalovič, Peter
AU  - Dramićanin, Miroslav
AU  - Mičušik, Matej
AU  - Kleinova, Angela
AU  - Janigova, Ivica
AU  - Marković, Zoran M.
AU  - Todorović-Marković, Biljana
PY  - 2018
UR  - http://doi.wiley.com/10.1002/pi.5620
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7796
AB  - This paper reports a simple route for the preparation of graphene/poly(styrene-b-butadiene-b-styrene) (SBS) nanocomposite films employing a vacuum filtration method. Graphene is exfoliated well by an electrochemical procedure and homogeneously dispersed in the polymer matrix. The prepared nanocomposite films were characterized by XRD, Fourier transform IR (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, AFM and SEM. Morphological studies showed that graphene formed a smooth coating over the surface of SBS. The increase in graphene concentration induces the wrinkling of graphene sheets at the composite surface which causes a further increase in surface roughness. The FTIR, Raman and XPS spectra of graphene/SBS nanocomposite films indicate the strong interactions between graphene and the polymer matrix. According to the XRD patterns, introducing SBS into graphene did not modify the graphene structure additionally, i.e. the crystal lattice parameters do not depend on SBS content in graphene/SBS nanocomposite films. The graphene/SBS nanocomposite films also exhibited better hydrophobicity due to the increased surface roughness and lower sheet resistivity (reduced 10 times) compared to exfoliated graphene.
T2  - Polymer International
T1  - Simple route for the preparation of graphene/poly(styrene-b-butadiene-b-styrene) nanocomposite films with enhanced electrical conductivity and hydrophobicity
VL  - 67
IS  - 8
SP  - 1118
EP  - 1127
DO  - 10.1002/pi.5620
ER  - 

@article{
author = "Kepić, Dejan P. and Ristić, Ivan S. and Marinović-Cincović, Milena and Peruško, Davor and Špitalsky, Zdenko and Pavlović, Vladimir B. and Budimir, Milica and Šiffalovič, Peter and Dramićanin, Miroslav and Mičušik, Matej and Kleinova, Angela and Janigova, Ivica and Marković, Zoran M. and Todorović-Marković, Biljana",
year = "2018",
abstract = "This paper reports a simple route for the preparation of graphene/poly(styrene-b-butadiene-b-styrene) (SBS) nanocomposite films employing a vacuum filtration method. Graphene is exfoliated well by an electrochemical procedure and homogeneously dispersed in the polymer matrix. The prepared nanocomposite films were characterized by XRD, Fourier transform IR (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, AFM and SEM. Morphological studies showed that graphene formed a smooth coating over the surface of SBS. The increase in graphene concentration induces the wrinkling of graphene sheets at the composite surface which causes a further increase in surface roughness. The FTIR, Raman and XPS spectra of graphene/SBS nanocomposite films indicate the strong interactions between graphene and the polymer matrix. According to the XRD patterns, introducing SBS into graphene did not modify the graphene structure additionally, i.e. the crystal lattice parameters do not depend on SBS content in graphene/SBS nanocomposite films. The graphene/SBS nanocomposite films also exhibited better hydrophobicity due to the increased surface roughness and lower sheet resistivity (reduced 10 times) compared to exfoliated graphene.",
journal = "Polymer International",
title = "Simple route for the preparation of graphene/poly(styrene-b-butadiene-b-styrene) nanocomposite films with enhanced electrical conductivity and hydrophobicity",
volume = "67",
number = "8",
pages = "1118-1127",
doi = "10.1002/pi.5620"
}

Kepić, D. P., Ristić, I. S., Marinović-Cincović, M., Peruško, D., Špitalsky, Z., Pavlović, V. B., Budimir, M., Šiffalovič, P., Dramićanin, M., Mičušik, M., Kleinova, A., Janigova, I., Marković, Z. M.,& Todorović-Marković, B.. (2018). Simple route for the preparation of graphene/poly(styrene-b-butadiene-b-styrene) nanocomposite films with enhanced electrical conductivity and hydrophobicity. in Polymer International, 67(8), 1118-1127.
https://doi.org/10.1002/pi.5620

Kepić DP, Ristić IS, Marinović-Cincović M, Peruško D, Špitalsky Z, Pavlović VB, Budimir M, Šiffalovič P, Dramićanin M, Mičušik M, Kleinova A, Janigova I, Marković ZM, Todorović-Marković B. Simple route for the preparation of graphene/poly(styrene-b-butadiene-b-styrene) nanocomposite films with enhanced electrical conductivity and hydrophobicity. in Polymer International. 2018;67(8):1118-1127.
doi:10.1002/pi.5620 .

Kepić, Dejan P., Ristić, Ivan S., Marinović-Cincović, Milena, Peruško, Davor, Špitalsky, Zdenko, Pavlović, Vladimir B., Budimir, Milica, Šiffalovič, Peter, Dramićanin, Miroslav, Mičušik, Matej, Kleinova, Angela, Janigova, Ivica, Marković, Zoran M., Todorović-Marković, Biljana, "Simple route for the preparation of graphene/poly(styrene-b-butadiene-b-styrene) nanocomposite films with enhanced electrical conductivity and hydrophobicity" in Polymer International, 67, no. 8 (2018):1118-1127,
https://doi.org/10.1002/pi.5620 . .

TY  - JOUR
AU  - Sandoval, Stefania
AU  - Kepić, Dejan P.
AU  - Perez del Pino, Angel
AU  - Gyorgy, Eniko
AU  - Gomez, Andres
AU  - Pfannmoeller, Martin
AU  - Tendeloo, Gustaaf Van
AU  - Ballesteros, Belen
AU  - Tobias, Gerard
PY  - 2018
UR  - http://pubs.acs.org/doi/10.1021/acsnano.8b01638
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7933
AB  - The electronic and optical properties of two-dimensional layered materials allow the miniaturization of nanoelectronic and optoelectronic devices in a competitive manner. Even larger opportunities arise when two or more layers of different materials are combined. Here, we report on an ultrafast energy efficient strategy, using laser irradiation, which allows bulk synthesis of crystalline single-layered lead iodide in the cavities of carbon nanotubes by forming cylindrical van der Waals heterostructures. In contrast to the filling of van der Waals solids into carbon nanotubes by conventional thermal annealing, which favors the formation of inorganic nanowires, the present strategy is highly selective toward the growth of monolayers forming lead iodide nanotubes. The irradiated bulk material bearing the nanotubes reveals a decrease of the resistivity as well as a significant increase in the current flow upon illumination. Both effects are attributed to the presence of single-walled lead iodide nanotubes in the cavities of carbon nanotubes, which dominate the properties of the whole matrix. The present study brings in a simple, ultrafast and energy efficient strategy for the tailored synthesis of rolled-up single-layers of lead iodide (i.e., single-walled PbI2 nanotubes), which we believe could be expanded to other two-dimensional (2D) van der Waals solids. In fact, initial tests with ZnI2 already reveal the formation of single-walled ZnI2 nanotubes, thus proving the versatility of the approach.
T2  - ACS Nano
T1  - Selective Laser-Assisted Synthesis of Tubular van der Waals Heterostructures of Single-Layered PbI 2 within Carbon Nanotubes Exhibiting Carrier Photogeneration
VL  - 12
IS  - 7
SP  - 6648
EP  - 6656
DO  - 10.1021/acsnano.8b01638
ER  - 

@article{
author = "Sandoval, Stefania and Kepić, Dejan P. and Perez del Pino, Angel and Gyorgy, Eniko and Gomez, Andres and Pfannmoeller, Martin and Tendeloo, Gustaaf Van and Ballesteros, Belen and Tobias, Gerard",
year = "2018",
abstract = "The electronic and optical properties of two-dimensional layered materials allow the miniaturization of nanoelectronic and optoelectronic devices in a competitive manner. Even larger opportunities arise when two or more layers of different materials are combined. Here, we report on an ultrafast energy efficient strategy, using laser irradiation, which allows bulk synthesis of crystalline single-layered lead iodide in the cavities of carbon nanotubes by forming cylindrical van der Waals heterostructures. In contrast to the filling of van der Waals solids into carbon nanotubes by conventional thermal annealing, which favors the formation of inorganic nanowires, the present strategy is highly selective toward the growth of monolayers forming lead iodide nanotubes. The irradiated bulk material bearing the nanotubes reveals a decrease of the resistivity as well as a significant increase in the current flow upon illumination. Both effects are attributed to the presence of single-walled lead iodide nanotubes in the cavities of carbon nanotubes, which dominate the properties of the whole matrix. The present study brings in a simple, ultrafast and energy efficient strategy for the tailored synthesis of rolled-up single-layers of lead iodide (i.e., single-walled PbI2 nanotubes), which we believe could be expanded to other two-dimensional (2D) van der Waals solids. In fact, initial tests with ZnI2 already reveal the formation of single-walled ZnI2 nanotubes, thus proving the versatility of the approach.",
journal = "ACS Nano",
title = "Selective Laser-Assisted Synthesis of Tubular van der Waals Heterostructures of Single-Layered PbI 2 within Carbon Nanotubes Exhibiting Carrier Photogeneration",
volume = "12",
number = "7",
pages = "6648-6656",
doi = "10.1021/acsnano.8b01638"
}

Sandoval, S., Kepić, D. P., Perez del Pino, A., Gyorgy, E., Gomez, A., Pfannmoeller, M., Tendeloo, G. V., Ballesteros, B.,& Tobias, G.. (2018). Selective Laser-Assisted Synthesis of Tubular van der Waals Heterostructures of Single-Layered PbI 2 within Carbon Nanotubes Exhibiting Carrier Photogeneration. in ACS Nano, 12(7), 6648-6656.
https://doi.org/10.1021/acsnano.8b01638

Sandoval S, Kepić DP, Perez del Pino A, Gyorgy E, Gomez A, Pfannmoeller M, Tendeloo GV, Ballesteros B, Tobias G. Selective Laser-Assisted Synthesis of Tubular van der Waals Heterostructures of Single-Layered PbI 2 within Carbon Nanotubes Exhibiting Carrier Photogeneration. in ACS Nano. 2018;12(7):6648-6656.
doi:10.1021/acsnano.8b01638 .

Sandoval, Stefania, Kepić, Dejan P., Perez del Pino, Angel, Gyorgy, Eniko, Gomez, Andres, Pfannmoeller, Martin, Tendeloo, Gustaaf Van, Ballesteros, Belen, Tobias, Gerard, "Selective Laser-Assisted Synthesis of Tubular van der Waals Heterostructures of Single-Layered PbI 2 within Carbon Nanotubes Exhibiting Carrier Photogeneration" in ACS Nano, 12, no. 7 (2018):6648-6656,
https://doi.org/10.1021/acsnano.8b01638 . .

TY  - JOUR
AU  - Kepić, Dejan P.
AU  - Sandoval, Stefania
AU  - Perez del Pino, Angel
AU  - Gyorgy, Eniko
AU  - Cabana, Laura
AU  - Ballesteros, Belen
AU  - Tobias, Gerard
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1358
AB  - N-doped reduced graphene oxide (RGO) has been prepared in bulk form by laser irradiation of graphene oxide (GO) dispersed in an aqueous solution of ammonia. A pulsed Nd:YAG laser with emission wavelengths in the infrared (IR) 1064 nm, visible (Vis) 532 nm, and ultraviolet (UV) 266 nm spectral regions was employed for the preparation of the N-doped RGO samples. Regardless of the laser energy employed, the resulting material presents a higher fraction of pyrrolic nitrogen compared to nitrogen atoms in pyridinic and graphitic coordination. Noticeably, whereas increasing the laser fluence of UV and Vis wavelengths results in an increase in the total amount of nitrogen, up to 4.9 at.% (UV wavelength at 60 mJ cm(-2) fluence), the opposite trend is observed when the GO is irradiated in ammonia solution through IR processing. The proposed laser-based methodology allows the bulk synthesis of N-doped reduced graphene oxide in a simple, fast, and cost efficient manner.
T2  - ChemPhysChem
T1  - Nanosecond Laser-Assisted Nitrogen Doping of Graphene Oxide Dispersions
VL  - 18
IS  - 8
SP  - 935
EP  - 941
DO  - 10.1002/cphc.201601256
ER  - 

@article{
author = "Kepić, Dejan P. and Sandoval, Stefania and Perez del Pino, Angel and Gyorgy, Eniko and Cabana, Laura and Ballesteros, Belen and Tobias, Gerard",
year = "2017",
abstract = "N-doped reduced graphene oxide (RGO) has been prepared in bulk form by laser irradiation of graphene oxide (GO) dispersed in an aqueous solution of ammonia. A pulsed Nd:YAG laser with emission wavelengths in the infrared (IR) 1064 nm, visible (Vis) 532 nm, and ultraviolet (UV) 266 nm spectral regions was employed for the preparation of the N-doped RGO samples. Regardless of the laser energy employed, the resulting material presents a higher fraction of pyrrolic nitrogen compared to nitrogen atoms in pyridinic and graphitic coordination. Noticeably, whereas increasing the laser fluence of UV and Vis wavelengths results in an increase in the total amount of nitrogen, up to 4.9 at.% (UV wavelength at 60 mJ cm(-2) fluence), the opposite trend is observed when the GO is irradiated in ammonia solution through IR processing. The proposed laser-based methodology allows the bulk synthesis of N-doped reduced graphene oxide in a simple, fast, and cost efficient manner.",
journal = "ChemPhysChem",
title = "Nanosecond Laser-Assisted Nitrogen Doping of Graphene Oxide Dispersions",
volume = "18",
number = "8",
pages = "935-941",
doi = "10.1002/cphc.201601256"
}

Kepić, D. P., Sandoval, S., Perez del Pino, A., Gyorgy, E., Cabana, L., Ballesteros, B.,& Tobias, G.. (2017). Nanosecond Laser-Assisted Nitrogen Doping of Graphene Oxide Dispersions. in ChemPhysChem, 18(8), 935-941.
https://doi.org/10.1002/cphc.201601256

Kepić DP, Sandoval S, Perez del Pino A, Gyorgy E, Cabana L, Ballesteros B, Tobias G. Nanosecond Laser-Assisted Nitrogen Doping of Graphene Oxide Dispersions. in ChemPhysChem. 2017;18(8):935-941.
doi:10.1002/cphc.201601256 .

Kepić, Dejan P., Sandoval, Stefania, Perez del Pino, Angel, Gyorgy, Eniko, Cabana, Laura, Ballesteros, Belen, Tobias, Gerard, "Nanosecond Laser-Assisted Nitrogen Doping of Graphene Oxide Dispersions" in ChemPhysChem, 18, no. 8 (2017):935-941,
https://doi.org/10.1002/cphc.201601256 . .