TY  - JOUR
AU  - Marković, Darka
AU  - Korica, Matea
AU  - Kostić, Mirjana M.
AU  - Radovanović, Željko
AU  - Šaponjić, Zoran
AU  - Mitrić, Miodrag
AU  - Radetić, Maja M.
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1911
AB  - In situ synthesis of Cu/Cu2O nanoparticles on the cotton fabric discussed in this study relies on adsorption of Cu2+-ions by carboxylate groups generated through the TEMPO-mediated oxidation of cellulose and their subsequent reduction by sodium borohydride. In order to establish the influence of aldehyde and carboxylate groups on the nanoparticles formation, the duration of TEMPO-mediated oxidation was varied. Chemical changes induced by TEMPO-mediated oxidation were evaluated by titrimetric determination of the amounts of aldehyde and carboxylic groups in cotton and FTIR spectroscopy. The presence of Cu/Cu2O nanoparticles on the cotton fabric was confirmed by FE-SEM, AAS and XRD analyses. Antimicrobial activity of synthesized nanoparticles was tested against Gram-negative bacteria E. coli, Gram-positive bacteria S. aureus and fungi C. albicans. The extension of TEMPO oxidation time led to an increase of carboxylate group content and consequently, formation of larger amounts of Cu/Cu2O nanoparticles. All fabricated textile nanocomposites provided excellent antibacterial and acceptable antifungal activity. They also ensured a controlled release of Cu2+-ions in physiological solution which is an imperative for infection prevention.
T2  - Cellulose
T1  - In situ synthesis of Cu/Cu2O nanoparticles on the TEMPO oxidized cotton fabrics
VL  - 25
IS  - 1
SP  - 829
EP  - 841
DO  - 10.1007/s10570-017-1566-5
ER  - 

@article{
author = "Marković, Darka and Korica, Matea and Kostić, Mirjana M. and Radovanović, Željko and Šaponjić, Zoran and Mitrić, Miodrag and Radetić, Maja M.",
year = "2018",
abstract = "In situ synthesis of Cu/Cu2O nanoparticles on the cotton fabric discussed in this study relies on adsorption of Cu2+-ions by carboxylate groups generated through the TEMPO-mediated oxidation of cellulose and their subsequent reduction by sodium borohydride. In order to establish the influence of aldehyde and carboxylate groups on the nanoparticles formation, the duration of TEMPO-mediated oxidation was varied. Chemical changes induced by TEMPO-mediated oxidation were evaluated by titrimetric determination of the amounts of aldehyde and carboxylic groups in cotton and FTIR spectroscopy. The presence of Cu/Cu2O nanoparticles on the cotton fabric was confirmed by FE-SEM, AAS and XRD analyses. Antimicrobial activity of synthesized nanoparticles was tested against Gram-negative bacteria E. coli, Gram-positive bacteria S. aureus and fungi C. albicans. The extension of TEMPO oxidation time led to an increase of carboxylate group content and consequently, formation of larger amounts of Cu/Cu2O nanoparticles. All fabricated textile nanocomposites provided excellent antibacterial and acceptable antifungal activity. They also ensured a controlled release of Cu2+-ions in physiological solution which is an imperative for infection prevention.",
journal = "Cellulose",
title = "In situ synthesis of Cu/Cu2O nanoparticles on the TEMPO oxidized cotton fabrics",
volume = "25",
number = "1",
pages = "829-841",
doi = "10.1007/s10570-017-1566-5"
}

Marković, D., Korica, M., Kostić, M. M., Radovanović, Ž., Šaponjić, Z., Mitrić, M.,& Radetić, M. M.. (2018). In situ synthesis of Cu/Cu2O nanoparticles on the TEMPO oxidized cotton fabrics. in Cellulose, 25(1), 829-841.
https://doi.org/10.1007/s10570-017-1566-5

Marković D, Korica M, Kostić MM, Radovanović Ž, Šaponjić Z, Mitrić M, Radetić MM. In situ synthesis of Cu/Cu2O nanoparticles on the TEMPO oxidized cotton fabrics. in Cellulose. 2018;25(1):829-841.
doi:10.1007/s10570-017-1566-5 .

Marković, Darka, Korica, Matea, Kostić, Mirjana M., Radovanović, Željko, Šaponjić, Zoran, Mitrić, Miodrag, Radetić, Maja M., "In situ synthesis of Cu/Cu2O nanoparticles on the TEMPO oxidized cotton fabrics" in Cellulose, 25, no. 1 (2018):829-841,
https://doi.org/10.1007/s10570-017-1566-5 . .

TY  - JOUR
AU  - Vukčević, Marija M.
AU  - Pejić, Biljana M.
AU  - Pajić-Lijaković, Ivana
AU  - Kalijadis, Ana
AU  - Kostić, Mirjana M.
AU  - Laušević, Zoran
AU  - Laušević, Mila D.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1897
AB  - Waste hemp (Cannabis sativa) fibers were used as sustainable and renewable raw materials for production of low-cost biocarbon sorbent for heavy metals removal. Carbon precursors of different chemical composition were obtained by oxidative and alkaline treatments of hemp fibers. Influence of lignocellulosic precursor chemical composition on hemp fibers-based biocarbon (HFB) characteristics was examined by BET surface area measurement, scanning electron microscopy and mass titration. It was found that lignin content and polymorphic transformation of cellulose increase the SBET of microporous HFBs, while hemicelluloses induce more homogeneous distribution of adsorption active sites. Heavy metal ions adsorption onto HFBs is primarily influenced by the amount of surface oxygen groups, while specific surface area plays a secondary role. Equilibrium data obtained for lead ions adsorption were analyzed by different nonlinear adsorption isotherms, and the best fitting model was chosen using standard deviation and Akaike information criterion (AIC(C)). The maximum adsorption capacities of HFBs ranged from 103.1 to 116.3 mg Pb/g. Thermodynamic parameters showed that Pb2+ adsorption onto HFBs is a spontaneous and complex endothermic process, suggesting the coexistence of physisorption and chemisorption mechanisms.
T2  - Journal of the Serbian Chemical Society
T1  - Influence of the precursor chemical composition on heavy metal adsorption properties of hemp (Cannabis Sativa) fibers based biocarbon
VL  - 82
IS  - 12
SP  - 1417
EP  - 1431
DO  - 10.2298/JSC170310080V
ER  - 

@article{
author = "Vukčević, Marija M. and Pejić, Biljana M. and Pajić-Lijaković, Ivana and Kalijadis, Ana and Kostić, Mirjana M. and Laušević, Zoran and Laušević, Mila D.",
year = "2017",
abstract = "Waste hemp (Cannabis sativa) fibers were used as sustainable and renewable raw materials for production of low-cost biocarbon sorbent for heavy metals removal. Carbon precursors of different chemical composition were obtained by oxidative and alkaline treatments of hemp fibers. Influence of lignocellulosic precursor chemical composition on hemp fibers-based biocarbon (HFB) characteristics was examined by BET surface area measurement, scanning electron microscopy and mass titration. It was found that lignin content and polymorphic transformation of cellulose increase the SBET of microporous HFBs, while hemicelluloses induce more homogeneous distribution of adsorption active sites. Heavy metal ions adsorption onto HFBs is primarily influenced by the amount of surface oxygen groups, while specific surface area plays a secondary role. Equilibrium data obtained for lead ions adsorption were analyzed by different nonlinear adsorption isotherms, and the best fitting model was chosen using standard deviation and Akaike information criterion (AIC(C)). The maximum adsorption capacities of HFBs ranged from 103.1 to 116.3 mg Pb/g. Thermodynamic parameters showed that Pb2+ adsorption onto HFBs is a spontaneous and complex endothermic process, suggesting the coexistence of physisorption and chemisorption mechanisms.",
journal = "Journal of the Serbian Chemical Society",
title = "Influence of the precursor chemical composition on heavy metal adsorption properties of hemp (Cannabis Sativa) fibers based biocarbon",
volume = "82",
number = "12",
pages = "1417-1431",
doi = "10.2298/JSC170310080V"
}

Vukčević, M. M., Pejić, B. M., Pajić-Lijaković, I., Kalijadis, A., Kostić, M. M., Laušević, Z.,& Laušević, M. D.. (2017). Influence of the precursor chemical composition on heavy metal adsorption properties of hemp (Cannabis Sativa) fibers based biocarbon. in Journal of the Serbian Chemical Society, 82(12), 1417-1431.
https://doi.org/10.2298/JSC170310080V

Vukčević MM, Pejić BM, Pajić-Lijaković I, Kalijadis A, Kostić MM, Laušević Z, Laušević MD. Influence of the precursor chemical composition on heavy metal adsorption properties of hemp (Cannabis Sativa) fibers based biocarbon. in Journal of the Serbian Chemical Society. 2017;82(12):1417-1431.
doi:10.2298/JSC170310080V .

Vukčević, Marija M., Pejić, Biljana M., Pajić-Lijaković, Ivana, Kalijadis, Ana, Kostić, Mirjana M., Laušević, Zoran, Laušević, Mila D., "Influence of the precursor chemical composition on heavy metal adsorption properties of hemp (Cannabis Sativa) fibers based biocarbon" in Journal of the Serbian Chemical Society, 82, no. 12 (2017):1417-1431,
https://doi.org/10.2298/JSC170310080V . .

TY  - JOUR
AU  - Vukčević, Marija
AU  - Pejić, Biljana
AU  - Kalijadis, Ana
AU  - Pajić-Lijaković, Ivana
AU  - Kostić, Mirjana M.
AU  - Laušević, Zoran
AU  - Laušević, Mila D.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5815
AB  - Carbonized hemp fibers obtained by carbonization of origin and chemically modified waste hemp fibers was used as a low-cost sorbent for heavy metals removal. The efficiency of carbonized hemp fiber samples as a sorbent was tested through the adsorption of lead ions as a heavy metal model ion. Although changes in carbon precursor structure, induced by chemical modification, affect the sorption process and sorption capacity of carbonized hemp fibers, all carbonized hemp fibers samples show good adsorption properties toward lead ions. Obtained experimental data was used for development of the mathematical model that describes both the phenomenon of metal ions transport through the porous sorbent matrices, and the structure of carbonized hemp fibers. Effective diffusion coefficient, damping coefficient and the lead ion concentration profile within the carbonized hemp fibers, obtained as results of proposed mathematical model, give the insight in the mechanism and the rate of adsorption process, while average tortuosity connected the sorbent structure and ions transport through the sorbent. A good agreement between model prediction for both structural and ion transport model parameters and the experimental data, indicates that the proposed mathematical model can be successfully used for optimization of heavy metal ions adsorption process by correlating the model parameters to the carbonized hemp fibers performances. (C) 2013 Elsevier B.V. All rights reserved.
T2  - Chemical Engineering Journal
T1  - Carbon materials from waste short hemp fibers as a sorbent for heavy metal ions - Mathematical modeling of sorbent structure and ions transport
VL  - 235
SP  - 284
EP  - 292
DO  - 10.1016/j.cej.2013.09.047
ER  - 

@article{
author = "Vukčević, Marija and Pejić, Biljana and Kalijadis, Ana and Pajić-Lijaković, Ivana and Kostić, Mirjana M. and Laušević, Zoran and Laušević, Mila D.",
year = "2014",
abstract = "Carbonized hemp fibers obtained by carbonization of origin and chemically modified waste hemp fibers was used as a low-cost sorbent for heavy metals removal. The efficiency of carbonized hemp fiber samples as a sorbent was tested through the adsorption of lead ions as a heavy metal model ion. Although changes in carbon precursor structure, induced by chemical modification, affect the sorption process and sorption capacity of carbonized hemp fibers, all carbonized hemp fibers samples show good adsorption properties toward lead ions. Obtained experimental data was used for development of the mathematical model that describes both the phenomenon of metal ions transport through the porous sorbent matrices, and the structure of carbonized hemp fibers. Effective diffusion coefficient, damping coefficient and the lead ion concentration profile within the carbonized hemp fibers, obtained as results of proposed mathematical model, give the insight in the mechanism and the rate of adsorption process, while average tortuosity connected the sorbent structure and ions transport through the sorbent. A good agreement between model prediction for both structural and ion transport model parameters and the experimental data, indicates that the proposed mathematical model can be successfully used for optimization of heavy metal ions adsorption process by correlating the model parameters to the carbonized hemp fibers performances. (C) 2013 Elsevier B.V. All rights reserved.",
journal = "Chemical Engineering Journal",
title = "Carbon materials from waste short hemp fibers as a sorbent for heavy metal ions - Mathematical modeling of sorbent structure and ions transport",
volume = "235",
pages = "284-292",
doi = "10.1016/j.cej.2013.09.047"
}

Vukčević, M., Pejić, B., Kalijadis, A., Pajić-Lijaković, I., Kostić, M. M., Laušević, Z.,& Laušević, M. D.. (2014). Carbon materials from waste short hemp fibers as a sorbent for heavy metal ions - Mathematical modeling of sorbent structure and ions transport. in Chemical Engineering Journal, 235, 284-292.
https://doi.org/10.1016/j.cej.2013.09.047

Vukčević M, Pejić B, Kalijadis A, Pajić-Lijaković I, Kostić MM, Laušević Z, Laušević MD. Carbon materials from waste short hemp fibers as a sorbent for heavy metal ions - Mathematical modeling of sorbent structure and ions transport. in Chemical Engineering Journal. 2014;235:284-292.
doi:10.1016/j.cej.2013.09.047 .

Vukčević, Marija, Pejić, Biljana, Kalijadis, Ana, Pajić-Lijaković, Ivana, Kostić, Mirjana M., Laušević, Zoran, Laušević, Mila D., "Carbon materials from waste short hemp fibers as a sorbent for heavy metal ions - Mathematical modeling of sorbent structure and ions transport" in Chemical Engineering Journal, 235 (2014):284-292,
https://doi.org/10.1016/j.cej.2013.09.047 . .

TY  - JOUR
AU  - Vukčević, Marija
AU  - Kalijadis, Ana
AU  - Radisic, Marina
AU  - Pejić, Biljana
AU  - Kostić, Mirjana M.
AU  - Laušević, Zoran
AU  - Laušević, Mila D.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5272
AB  - There is a growing interest in utilization of abundantly available materials, bio-mass or industrial byproducts, as precursors for the preparation of carbon materials. Short hemp fibers, acquired as waste from textile production, were used as low-cost precursor for production of carbon materials as a sorbent in the solid-phase extraction, for pesticide analysis in water samples. Different carbon materials were prepared by carbonization of unmodified and chemically modified hemp fibers. Activation of carbonized materials with potassium hydroxide improves sorption properties of carbonized hemp fibers by increasing the specific surface area (up to 2192 m(2)/g) and the amount of surface oxygen groups. The following parameters that may affect the solid-phase extraction procedure efficiency were optimized: different elution solvents and the pH value of pesticide solution. Extracts were analyzed by liquid chromatography-tandem mass spectrometry technique. For this study pesticides belonging to the different chemical classes were chosen. Obtained results indicate that carbonized and activated hemp fibers could be successfully applied as a solid-phase sorbent for the pesticide analysis in water samples. (C) 2012 Elsevier B.V. All rights reserved.
T2  - Chemical Engineering Journal
T1  - Application of carbonized hemp fibers as a new solid-phase extraction sorbent for analysis of pesticides in water samples
VL  - 211
SP  - 224
EP  - 232
DO  - 10.1016/j.cej.2012.09.059
ER  - 

@article{
author = "Vukčević, Marija and Kalijadis, Ana and Radisic, Marina and Pejić, Biljana and Kostić, Mirjana M. and Laušević, Zoran and Laušević, Mila D.",
year = "2012",
abstract = "There is a growing interest in utilization of abundantly available materials, bio-mass or industrial byproducts, as precursors for the preparation of carbon materials. Short hemp fibers, acquired as waste from textile production, were used as low-cost precursor for production of carbon materials as a sorbent in the solid-phase extraction, for pesticide analysis in water samples. Different carbon materials were prepared by carbonization of unmodified and chemically modified hemp fibers. Activation of carbonized materials with potassium hydroxide improves sorption properties of carbonized hemp fibers by increasing the specific surface area (up to 2192 m(2)/g) and the amount of surface oxygen groups. The following parameters that may affect the solid-phase extraction procedure efficiency were optimized: different elution solvents and the pH value of pesticide solution. Extracts were analyzed by liquid chromatography-tandem mass spectrometry technique. For this study pesticides belonging to the different chemical classes were chosen. Obtained results indicate that carbonized and activated hemp fibers could be successfully applied as a solid-phase sorbent for the pesticide analysis in water samples. (C) 2012 Elsevier B.V. All rights reserved.",
journal = "Chemical Engineering Journal",
title = "Application of carbonized hemp fibers as a new solid-phase extraction sorbent for analysis of pesticides in water samples",
volume = "211",
pages = "224-232",
doi = "10.1016/j.cej.2012.09.059"
}

Vukčević, M., Kalijadis, A., Radisic, M., Pejić, B., Kostić, M. M., Laušević, Z.,& Laušević, M. D.. (2012). Application of carbonized hemp fibers as a new solid-phase extraction sorbent for analysis of pesticides in water samples. in Chemical Engineering Journal, 211, 224-232.
https://doi.org/10.1016/j.cej.2012.09.059

Vukčević M, Kalijadis A, Radisic M, Pejić B, Kostić MM, Laušević Z, Laušević MD. Application of carbonized hemp fibers as a new solid-phase extraction sorbent for analysis of pesticides in water samples. in Chemical Engineering Journal. 2012;211:224-232.
doi:10.1016/j.cej.2012.09.059 .

Vukčević, Marija, Kalijadis, Ana, Radisic, Marina, Pejić, Biljana, Kostić, Mirjana M., Laušević, Zoran, Laušević, Mila D., "Application of carbonized hemp fibers as a new solid-phase extraction sorbent for analysis of pesticides in water samples" in Chemical Engineering Journal, 211 (2012):224-232,
https://doi.org/10.1016/j.cej.2012.09.059 . .