TY  - JOUR
AU  - Matović, Branko
AU  - Maletaškić, Jelena
AU  - Maksimović, Vesna
AU  - Dimitrijević, Stevan P.
AU  - Todorović, Bratislav
AU  - Pejić, Milan
AU  - Zagorac, Dejan
AU  - Zagorac, Jelena
AU  - Zeng, Yu-Ping
AU  - Cvijović-Alagić, Ivana
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5959
AB  - Multicomponent oxide with pyrochlore structure (A2B2O7), containing 7 different A-site cations and 3 B-site cations in equiatomic amounts, was synthesized. Powders with nominal composition (La1/7Sm1/7Nd1/7Pr1/7Y1/7Gd1/7Yb1/7)2(Sn1/3Hf1/3Zr1/3)2O7 were fabricated through a reaction of metal nitrates (A-site) and metal chlorides (B-site) with sodium hydroxide during the solid state displacement reaction. Room temperature synthesis initially resulted in the obtainment of amorphous powders, which crystallized after subsequent calcination to form single crystalline compounds. Crystalline high-entropy ceramic powders formation took place at temperatures as low as 750 °C. During calcination, defective fluorite (F-A2B2O7) and crystal pyrochlore (Py-A2B2O7) structures coexist. A large number of cations induce the obtainment of stable high-entropy pyrochlores. Results showed that sintering at 1650 °C lead to pure crystalline single-phase pyrochlore formation. High-density ceramic, free of additives, was obtained after powders were compacted and subjected to pressureless sintering at 1650 °C. Multicomponent pyrochlore structure was investigated using the theoretical and experimental multi-methodological approach.
PB  - Sociedad Espanola de Ceramica y Vidrio
T2  - Boletin de la Sociedad Espanola de Ceramica y Vidrio
T1  - Multicomponent solid solution with pyrochlore structure
T1  - Solución sólida multicomponente con estructura de pirocloro
DO  - 10.1016/j.bsecv.2023.01.005
ER  - 

@article{
author = "Matović, Branko and Maletaškić, Jelena and Maksimović, Vesna and Dimitrijević, Stevan P. and Todorović, Bratislav and Pejić, Milan and Zagorac, Dejan and Zagorac, Jelena and Zeng, Yu-Ping and Cvijović-Alagić, Ivana",
year = "2023",
abstract = "Multicomponent oxide with pyrochlore structure (A2B2O7), containing 7 different A-site cations and 3 B-site cations in equiatomic amounts, was synthesized. Powders with nominal composition (La1/7Sm1/7Nd1/7Pr1/7Y1/7Gd1/7Yb1/7)2(Sn1/3Hf1/3Zr1/3)2O7 were fabricated through a reaction of metal nitrates (A-site) and metal chlorides (B-site) with sodium hydroxide during the solid state displacement reaction. Room temperature synthesis initially resulted in the obtainment of amorphous powders, which crystallized after subsequent calcination to form single crystalline compounds. Crystalline high-entropy ceramic powders formation took place at temperatures as low as 750 °C. During calcination, defective fluorite (F-A2B2O7) and crystal pyrochlore (Py-A2B2O7) structures coexist. A large number of cations induce the obtainment of stable high-entropy pyrochlores. Results showed that sintering at 1650 °C lead to pure crystalline single-phase pyrochlore formation. High-density ceramic, free of additives, was obtained after powders were compacted and subjected to pressureless sintering at 1650 °C. Multicomponent pyrochlore structure was investigated using the theoretical and experimental multi-methodological approach.",
publisher = "Sociedad Espanola de Ceramica y Vidrio",
journal = "Boletin de la Sociedad Espanola de Ceramica y Vidrio",
title = "Multicomponent solid solution with pyrochlore structure, Solución sólida multicomponente con estructura de pirocloro",
doi = "10.1016/j.bsecv.2023.01.005"
}

Matović, B., Maletaškić, J., Maksimović, V., Dimitrijević, S. P., Todorović, B., Pejić, M., Zagorac, D., Zagorac, J., Zeng, Y.,& Cvijović-Alagić, I.. (2023). Multicomponent solid solution with pyrochlore structure. in Boletin de la Sociedad Espanola de Ceramica y Vidrio
Sociedad Espanola de Ceramica y Vidrio..
https://doi.org/10.1016/j.bsecv.2023.01.005

Matović B, Maletaškić J, Maksimović V, Dimitrijević SP, Todorović B, Pejić M, Zagorac D, Zagorac J, Zeng Y, Cvijović-Alagić I. Multicomponent solid solution with pyrochlore structure. in Boletin de la Sociedad Espanola de Ceramica y Vidrio. 2023;.
doi:10.1016/j.bsecv.2023.01.005 .

Matović, Branko, Maletaškić, Jelena, Maksimović, Vesna, Dimitrijević, Stevan P., Todorović, Bratislav, Pejić, Milan, Zagorac, Dejan, Zagorac, Jelena, Zeng, Yu-Ping, Cvijović-Alagić, Ivana, "Multicomponent solid solution with pyrochlore structure" in Boletin de la Sociedad Espanola de Ceramica y Vidrio (2023),
https://doi.org/10.1016/j.bsecv.2023.01.005 . .

TY  - JOUR
AU  - Micić, Aleksandra
AU  - Đorđević, Dragan
AU  - Janković-Častvan, Ivona
AU  - Ćirković, Nenad
AU  - Todorović, Bratislav
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4430
AB  - The paper investigates the possibility of removing acid dye from the aqueous solution by an adsorption process on new adsorbent prepared from waste cotton textile from the ready-made garment industry. It is a waste generated during the cutting of the layers of cotton knitwear, which is practically the product from the textile cutting process. The obtained adsorbent is a bulk material with heterogeneous porous particles, of ragged shapes. In particle interiors, there are pronounced cracks, cavities and channels that form the basis of microporous material. The qualitative and quantitative characterization of the obtained adsorbent shows that this is a relatively porous material where the carbon is dominant in the chemical composition. The results of textural properties of new adsorbent from cotton knitwear waste show different parameters which with their numerous values characterize the specific surface area, pore volume or pore diameter. It can be said that the obtained new adsorbent has micropores and small mesopores, which produce a high specific surface area. During adsorption, the longer contact time causes a greater amount of dye on the adsorbent, i.e. with the duration of the adsorption process the dye concentration in the solution decreases. A number of isotherms of two- (Langmuir, Freundlich and Jovanovic), three- (Toth, Sips and Radke-Prausnitz), and four-parameter models (Fritz-Schlunder and Marczewski-Jaroniec) were used to describe the adsorption process. The four-parameter isotherms are best covered by experimental points and most accurately describe the events of adsorption of acid dye on the surface and in the interior of the new adsorbent particles obtained from ready made garment cotton waste. The results of this research suggest the possibility of practical application in the decolorization of the colored waste waters of the textile industry providing a contribution to protecting the environment from both an economic and a practical point of view.
PB  - Chem Soc Pakistan, Karachi
T2  - Journal of the Chemical Society of Pakistan
T1  - Removal of Acid Textile Dye from the Aqueous Solution by a New Adsorbent Obtained from Waste Cotton from the Garment Plant
EP  - 736
IS  - 5
SP  - 728
VL  - 42
UR  - https://hdl.handle.net/21.15107/rcub_technorep_4430
ER  - 

@article{
author = "Micić, Aleksandra and Đorđević, Dragan and Janković-Častvan, Ivona and Ćirković, Nenad and Todorović, Bratislav",
year = "2020",
abstract = "The paper investigates the possibility of removing acid dye from the aqueous solution by an adsorption process on new adsorbent prepared from waste cotton textile from the ready-made garment industry. It is a waste generated during the cutting of the layers of cotton knitwear, which is practically the product from the textile cutting process. The obtained adsorbent is a bulk material with heterogeneous porous particles, of ragged shapes. In particle interiors, there are pronounced cracks, cavities and channels that form the basis of microporous material. The qualitative and quantitative characterization of the obtained adsorbent shows that this is a relatively porous material where the carbon is dominant in the chemical composition. The results of textural properties of new adsorbent from cotton knitwear waste show different parameters which with their numerous values characterize the specific surface area, pore volume or pore diameter. It can be said that the obtained new adsorbent has micropores and small mesopores, which produce a high specific surface area. During adsorption, the longer contact time causes a greater amount of dye on the adsorbent, i.e. with the duration of the adsorption process the dye concentration in the solution decreases. A number of isotherms of two- (Langmuir, Freundlich and Jovanovic), three- (Toth, Sips and Radke-Prausnitz), and four-parameter models (Fritz-Schlunder and Marczewski-Jaroniec) were used to describe the adsorption process. The four-parameter isotherms are best covered by experimental points and most accurately describe the events of adsorption of acid dye on the surface and in the interior of the new adsorbent particles obtained from ready made garment cotton waste. The results of this research suggest the possibility of practical application in the decolorization of the colored waste waters of the textile industry providing a contribution to protecting the environment from both an economic and a practical point of view.",
publisher = "Chem Soc Pakistan, Karachi",
journal = "Journal of the Chemical Society of Pakistan",
title = "Removal of Acid Textile Dye from the Aqueous Solution by a New Adsorbent Obtained from Waste Cotton from the Garment Plant",
pages = "736-728",
number = "5",
volume = "42",
url = "https://hdl.handle.net/21.15107/rcub_technorep_4430"
}

Micić, A., Đorđević, D., Janković-Častvan, I., Ćirković, N.,& Todorović, B.. (2020). Removal of Acid Textile Dye from the Aqueous Solution by a New Adsorbent Obtained from Waste Cotton from the Garment Plant. in Journal of the Chemical Society of Pakistan
Chem Soc Pakistan, Karachi., 42(5), 728-736.
https://hdl.handle.net/21.15107/rcub_technorep_4430

Micić A, Đorđević D, Janković-Častvan I, Ćirković N, Todorović B. Removal of Acid Textile Dye from the Aqueous Solution by a New Adsorbent Obtained from Waste Cotton from the Garment Plant. in Journal of the Chemical Society of Pakistan. 2020;42(5):728-736.
https://hdl.handle.net/21.15107/rcub_technorep_4430 .

Micić, Aleksandra, Đorđević, Dragan, Janković-Častvan, Ivona, Ćirković, Nenad, Todorović, Bratislav, "Removal of Acid Textile Dye from the Aqueous Solution by a New Adsorbent Obtained from Waste Cotton from the Garment Plant" in Journal of the Chemical Society of Pakistan, 42, no. 5 (2020):728-736,
https://hdl.handle.net/21.15107/rcub_technorep_4430 .