TY  - JOUR
AU  - Dimitrijević, Stevan P.
AU  - Dimitrijević, Silvana B.
AU  - Ivanović, Aleksandra
AU  - Vuković, Nikola
AU  - Dhawan, Nikhil
PY  - 2022
UR  - https://ritnms.itnms.ac.rs/handle/123456789/627
AB  - This study investigates the electrochemical stability of the gold complex based on mercaptotriazole at an optimum pH of nine in the electrolyte with a gold concentration of 2.5 g dm(-3). The stability of the complex was studied by visual monitoring and electrochemical characterization of electrolytes over a period of 1 year. Electrochemical characterization of the mercaptotriazole gold complex was performed using open circuit potential measurement, cyclic voltammetry, recording the polarization curves, pH, and conductivity of the electrolyte. Electrochemical characteristics and visual appearance of the mercaptotriazole gold complex at a pH similar to 9 were not significantly changed for one year, with no changes in its visual appearance. The results of this study are important for industrial applications in order to replace cyanide electrolytes with a stable organic complex.
PB  - Springer Int Publ Ag, Cham
T2  - Chemical Papers
T1  - Electrochemical stability of gold complex based on mercaptotriazole at optimal condition
EP  - 7832
IS  - 12
SP  - 7823
VL  - 76
DO  - 10.1007/s11696-022-02447-y
UR  - conv_952
ER  - 

@article{
author = "Dimitrijević, Stevan P. and Dimitrijević, Silvana B. and Ivanović, Aleksandra and Vuković, Nikola and Dhawan, Nikhil",
year = "2022",
abstract = "This study investigates the electrochemical stability of the gold complex based on mercaptotriazole at an optimum pH of nine in the electrolyte with a gold concentration of 2.5 g dm(-3). The stability of the complex was studied by visual monitoring and electrochemical characterization of electrolytes over a period of 1 year. Electrochemical characterization of the mercaptotriazole gold complex was performed using open circuit potential measurement, cyclic voltammetry, recording the polarization curves, pH, and conductivity of the electrolyte. Electrochemical characteristics and visual appearance of the mercaptotriazole gold complex at a pH similar to 9 were not significantly changed for one year, with no changes in its visual appearance. The results of this study are important for industrial applications in order to replace cyanide electrolytes with a stable organic complex.",
publisher = "Springer Int Publ Ag, Cham",
journal = "Chemical Papers",
title = "Electrochemical stability of gold complex based on mercaptotriazole at optimal condition",
pages = "7832-7823",
number = "12",
volume = "76",
doi = "10.1007/s11696-022-02447-y",
url = "conv_952"
}

Dimitrijević, S. P., Dimitrijević, S. B., Ivanović, A., Vuković, N.,& Dhawan, N.. (2022). Electrochemical stability of gold complex based on mercaptotriazole at optimal condition. in Chemical Papers
Springer Int Publ Ag, Cham., 76(12), 7823-7832.
https://doi.org/10.1007/s11696-022-02447-y
conv_952

Dimitrijević SP, Dimitrijević SB, Ivanović A, Vuković N, Dhawan N. Electrochemical stability of gold complex based on mercaptotriazole at optimal condition. in Chemical Papers. 2022;76(12):7823-7832.
doi:10.1007/s11696-022-02447-y
conv_952 .

Dimitrijević, Stevan P., Dimitrijević, Silvana B., Ivanović, Aleksandra, Vuković, Nikola, Dhawan, Nikhil, "Electrochemical stability of gold complex based on mercaptotriazole at optimal condition" in Chemical Papers, 76, no. 12 (2022):7823-7832,
https://doi.org/10.1007/s11696-022-02447-y .,
conv_952 .

TY  - JOUR
AU  - Dimitrijević, Stevan P.
AU  - Andić, Z.
AU  - Kamberović, Željko
AU  - Dimitrijević, Silvana B.
AU  - Vuković, Nikola
PY  - 2014
UR  - https://ritnms.itnms.ac.rs/handle/123456789/296
AB  - The paper presents an improved process for recycling of silver-plate brass housing. Silver and copper are recovered with a purity of 99.99 % and 99.90 %, respectively, with the aim of obtaining materials of higher value using additional procedures based on the same process and equipment. The novel approach with subsequent electrorefining yields copper of 99.99 % purity with BS EN 1978:1998 (Cu-CATH-1) quality and is referred to as LME grade A. Additional processing of silver results in superfine, micro-sized Ag powder with partie size from 0.14 to 1.13 mu m and purity of 99.999 %. Copper electrorefining tests were performed using 1.50 dm(3) of synthetic electrolyte in a 2 dm(3) electrolytic cell. Effects of current density and electrolyte composition were investigated. Optimal current density for the first and second refining was 120 A/m(2) and 200 A/m(2), respectively. Additional refining of silver was performed by chemical reduction from an aqueous solution. Optimal results were obtained with ascorbic acid as a reduction agent in concentration of 0.1 mol/dm(3) and polyvinylpyrrolidon as a protective agent in concentration of 2 % by mass. The investigation results could be adopted into production.
PB  - Bulgarian Academy of Sciences
T2  - Bulgarian Chemical Communications
T1  - Recycling of silver-plated brass for production of high purity copper and ultrafine silver powder for electric contacts
EP  - 824
IS  - 4
SP  - 814
VL  - 46
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2553
UR  - conv_1046
ER  - 

@article{
author = "Dimitrijević, Stevan P. and Andić, Z. and Kamberović, Željko and Dimitrijević, Silvana B. and Vuković, Nikola",
year = "2014",
abstract = "The paper presents an improved process for recycling of silver-plate brass housing. Silver and copper are recovered with a purity of 99.99 % and 99.90 %, respectively, with the aim of obtaining materials of higher value using additional procedures based on the same process and equipment. The novel approach with subsequent electrorefining yields copper of 99.99 % purity with BS EN 1978:1998 (Cu-CATH-1) quality and is referred to as LME grade A. Additional processing of silver results in superfine, micro-sized Ag powder with partie size from 0.14 to 1.13 mu m and purity of 99.999 %. Copper electrorefining tests were performed using 1.50 dm(3) of synthetic electrolyte in a 2 dm(3) electrolytic cell. Effects of current density and electrolyte composition were investigated. Optimal current density for the first and second refining was 120 A/m(2) and 200 A/m(2), respectively. Additional refining of silver was performed by chemical reduction from an aqueous solution. Optimal results were obtained with ascorbic acid as a reduction agent in concentration of 0.1 mol/dm(3) and polyvinylpyrrolidon as a protective agent in concentration of 2 % by mass. The investigation results could be adopted into production.",
publisher = "Bulgarian Academy of Sciences",
journal = "Bulgarian Chemical Communications",
title = "Recycling of silver-plated brass for production of high purity copper and ultrafine silver powder for electric contacts",
pages = "824-814",
number = "4",
volume = "46",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2553, conv_1046"
}

Dimitrijević, S. P., Andić, Z., Kamberović, Ž., Dimitrijević, S. B.,& Vuković, N.. (2014). Recycling of silver-plated brass for production of high purity copper and ultrafine silver powder for electric contacts. in Bulgarian Chemical Communications
Bulgarian Academy of Sciences., 46(4), 814-824.
https://hdl.handle.net/21.15107/rcub_technorep_2553

Dimitrijević SP, Andić Z, Kamberović Ž, Dimitrijević SB, Vuković N. Recycling of silver-plated brass for production of high purity copper and ultrafine silver powder for electric contacts. in Bulgarian Chemical Communications. 2014;46(4):814-824.
https://hdl.handle.net/21.15107/rcub_technorep_2553 .

Dimitrijević, Stevan P., Andić, Z., Kamberović, Željko, Dimitrijević, Silvana B., Vuković, Nikola, "Recycling of silver-plated brass for production of high purity copper and ultrafine silver powder for electric contacts" in Bulgarian Chemical Communications, 46, no. 4 (2014):814-824,
https://hdl.handle.net/21.15107/rcub_technorep_2553 .