TY  - JOUR
AU  - Vukčević, Marija M.
AU  - Kalijadis, Ana
AU  - Vasiljevic, Tatjana M.
AU  - Babić, Biljana M.
AU  - Laušević, Zoran
AU  - Laušević, Mila D.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/621
AB  - The main objective of this work was to find optimal production parameters for the preparation of activated hemp fibers (ACh) with good adsorption properties toward pesticides. In order to examine the role of manufacturing parameters on ACh surface characteristics, activation process of carbonized hemp fibers was investigated by temperature programmed reaction and evolved gaseous products of activation were monitored by mass spectrometry. ACh samples were characterized by BET surface area, scanning electron microscopy and temperature-programmed desorption. KOH activation induces the reduction of oxygen groups existing on the carbonized hemp fiber surface and the formation of the more stable, predominantly anhydride groups, while porosity development correlates with both H-2 and CO, evolved during the activation, and increases with carbonization and activation temperature. Finally, the highest efficiency in pesticides removal was achieved by carbonization of waste hemp fibers and activation at 900 degrees C with KOH/carbonized material ratio of 2/1. High efficiency in pesticides removal indicates that activated hemp fibers could be successfully used as a sorbent in water purification. (C) 2015 Elsevier Inc. All rights reserved.
T2  - Microporous and Mesoporous Materials
T1  - Production of activated carbon derived from waste hemp (Cannabis sativa) fibers and its performance in pesticide adsorption
VL  - 214
SP  - 156
EP  - 165
DO  - 10.1016/j.micromeso.2015.05.012
ER  - 

@article{
author = "Vukčević, Marija M. and Kalijadis, Ana and Vasiljevic, Tatjana M. and Babić, Biljana M. and Laušević, Zoran and Laušević, Mila D.",
year = "2015",
abstract = "The main objective of this work was to find optimal production parameters for the preparation of activated hemp fibers (ACh) with good adsorption properties toward pesticides. In order to examine the role of manufacturing parameters on ACh surface characteristics, activation process of carbonized hemp fibers was investigated by temperature programmed reaction and evolved gaseous products of activation were monitored by mass spectrometry. ACh samples were characterized by BET surface area, scanning electron microscopy and temperature-programmed desorption. KOH activation induces the reduction of oxygen groups existing on the carbonized hemp fiber surface and the formation of the more stable, predominantly anhydride groups, while porosity development correlates with both H-2 and CO, evolved during the activation, and increases with carbonization and activation temperature. Finally, the highest efficiency in pesticides removal was achieved by carbonization of waste hemp fibers and activation at 900 degrees C with KOH/carbonized material ratio of 2/1. High efficiency in pesticides removal indicates that activated hemp fibers could be successfully used as a sorbent in water purification. (C) 2015 Elsevier Inc. All rights reserved.",
journal = "Microporous and Mesoporous Materials",
title = "Production of activated carbon derived from waste hemp (Cannabis sativa) fibers and its performance in pesticide adsorption",
volume = "214",
pages = "156-165",
doi = "10.1016/j.micromeso.2015.05.012"
}

Vukčević, M. M., Kalijadis, A., Vasiljevic, T. M., Babić, B. M., Laušević, Z.,& Laušević, M. D.. (2015). Production of activated carbon derived from waste hemp (Cannabis sativa) fibers and its performance in pesticide adsorption. in Microporous and Mesoporous Materials, 214, 156-165.
https://doi.org/10.1016/j.micromeso.2015.05.012

Vukčević MM, Kalijadis A, Vasiljevic TM, Babić BM, Laušević Z, Laušević MD. Production of activated carbon derived from waste hemp (Cannabis sativa) fibers and its performance in pesticide adsorption. in Microporous and Mesoporous Materials. 2015;214:156-165.
doi:10.1016/j.micromeso.2015.05.012 .

Vukčević, Marija M., Kalijadis, Ana, Vasiljevic, Tatjana M., Babić, Biljana M., Laušević, Zoran, Laušević, Mila D., "Production of activated carbon derived from waste hemp (Cannabis sativa) fibers and its performance in pesticide adsorption" in Microporous and Mesoporous Materials, 214 (2015):156-165,
https://doi.org/10.1016/j.micromeso.2015.05.012 . .

TY  - JOUR
AU  - Perić-Grujić, Aleksandra A.
AU  - Vasiljevic, Tatjana M.
AU  - Nešković, Olivera M.
AU  - Veljković, Miomir V.
AU  - Laušević, Zoran
AU  - Laugevic, Mila D.
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3116
AB  - The effects of boron and phosphorus incorporation in phenolic resin precursor to the oxidation resistance of glassy carbon have been studied. In order to reveal the nature and composition of the oxygen complexes formed at the surface of doped glassy carbon, under controlled atmosphere, the surface of the samples was cleaned under vacuum up to 1273 K. Specific functional groups, subsequently formed under dry CO2 or O-2 atmosphere on the surface of boron-doped and phosphorus-doped glassy carbon samples, were examined using the temperature-programmed desorption method combined with mass spectrometric analysis. Characterization of surface properties of undoped and doped samples has shown that in the presence of either boron or phosphorus heteroatoms, a lower amount of oxygen complexes formed after CO2 exposure, while, typically, higher amount of oxygen complexes formed after O-2 exposure. It has been concluded that the surface of undoped glassy carbon has a greater affinity towards CO2, while in the presence of either boron or phosphorus heteroatoms, the glassy carbon surface affinity becomes greater towards O-2, under experimental conditions.
T2  - Bulletin of Materials Science
T1  - Formation of oxygen complexes in controlled atmosphere at surface of doped glassy carbon
VL  - 29
IS  - 5
SP  - 467
EP  - 473
DO  - 10.1007/BF02914077
ER  - 

@article{
author = "Perić-Grujić, Aleksandra A. and Vasiljevic, Tatjana M. and Nešković, Olivera M. and Veljković, Miomir V. and Laušević, Zoran and Laugevic, Mila D.",
year = "2006",
abstract = "The effects of boron and phosphorus incorporation in phenolic resin precursor to the oxidation resistance of glassy carbon have been studied. In order to reveal the nature and composition of the oxygen complexes formed at the surface of doped glassy carbon, under controlled atmosphere, the surface of the samples was cleaned under vacuum up to 1273 K. Specific functional groups, subsequently formed under dry CO2 or O-2 atmosphere on the surface of boron-doped and phosphorus-doped glassy carbon samples, were examined using the temperature-programmed desorption method combined with mass spectrometric analysis. Characterization of surface properties of undoped and doped samples has shown that in the presence of either boron or phosphorus heteroatoms, a lower amount of oxygen complexes formed after CO2 exposure, while, typically, higher amount of oxygen complexes formed after O-2 exposure. It has been concluded that the surface of undoped glassy carbon has a greater affinity towards CO2, while in the presence of either boron or phosphorus heteroatoms, the glassy carbon surface affinity becomes greater towards O-2, under experimental conditions.",
journal = "Bulletin of Materials Science",
title = "Formation of oxygen complexes in controlled atmosphere at surface of doped glassy carbon",
volume = "29",
number = "5",
pages = "467-473",
doi = "10.1007/BF02914077"
}

Perić-Grujić, A. A., Vasiljevic, T. M., Nešković, O. M., Veljković, M. V., Laušević, Z.,& Laugevic, M. D.. (2006). Formation of oxygen complexes in controlled atmosphere at surface of doped glassy carbon. in Bulletin of Materials Science, 29(5), 467-473.
https://doi.org/10.1007/BF02914077

Perić-Grujić AA, Vasiljevic TM, Nešković OM, Veljković MV, Laušević Z, Laugevic MD. Formation of oxygen complexes in controlled atmosphere at surface of doped glassy carbon. in Bulletin of Materials Science. 2006;29(5):467-473.
doi:10.1007/BF02914077 .

Perić-Grujić, Aleksandra A., Vasiljevic, Tatjana M., Nešković, Olivera M., Veljković, Miomir V., Laušević, Zoran, Laugevic, Mila D., "Formation of oxygen complexes in controlled atmosphere at surface of doped glassy carbon" in Bulletin of Materials Science, 29, no. 5 (2006):467-473,
https://doi.org/10.1007/BF02914077 . .