Abstract
In this study, we developed dimensionally stable anodes of titanium covered with ruthenium oxides (Ti/RuO{sub 2}) using sol–gel, Pechini and ionic liquid (IL) methodologies. The electrochemical efficiency of these electrodes was then evaluated regarding electrochemical degradation of the pesticide carbaryl. The UV–visible spectroscopy measurements showed that the electrodes obtained by the IL and Pechini methods were more effective at pesticide degradation compared with the sol–gel electrode, especially at high current density values. Carbaryl degradation after 2 h of electrolysis at 30 mA cm{sup −2} was 96.4% and 95.5% for the electrodes obtained by the IL and Pechini methods, respectively, while the degradation was 65.0% for the electrodes obtained by the sol–gel method. Additionally, the electrodes prepared by the IL and Pechini methods showed greater physical and electrochemical stability when compared to electrodes obtained by the sol–gel method. Electrodes prepared by the IL method with a few covering layers (three) achieved an elevated and constant area in a more efficient way than electrodes prepared by the Pechini and sol–gel methods. This fact can be attributed to the higher viscosity of the ionic liquid-based precursor solution, which transfers a higher amount of Ru in one single layer, compared to the other methods studied, thus reducing
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Santos, T. É.S.;
[1]
Silva, R. S.;
[2]
Carlesi Jara, C.;
[3]
Eguiluz, K. I.B.;
[1]
Salazar-Banda, G.R., E-mail: gianrsb@gmail.com
[1]
- Laboratório de Eletroquímica e Nanotecnologia, Instituto de Tecnologia e Pesquisa (ITP)/Programa de Pós-Graduação em Engenharia de Processos, Universidade Tiradentes, 49032–490 Aracaju, SE (Brazil)
- Laboratório de Materiais Cerâmicos Avançados, Departamento de Física, Universidade Federal de Sergipe, 49.100-000 São Cristóvão, SE (Brazil)
- Escuela de Ingeniería Química, Pontificia Universidad Católica de Valparaíso, Av. Brasil No 2147, 2362804 Valparaíso (Chile)
Citation Formats
Santos, T. É.S., Silva, R. S., Carlesi Jara, C., Eguiluz, K. I.B., and Salazar-Banda, G.R., E-mail: gianrsb@gmail.com.
The influence of the synthesis method of Ti/RuO{sub 2} electrodes on their stability and catalytic activity for electrochemical oxidation of the pesticide carbaryl.
Netherlands: N. p.,
2014.
Web.
doi:10.1016/J.MATCHEMPHYS.2014.07.007.
Santos, T. É.S., Silva, R. S., Carlesi Jara, C., Eguiluz, K. I.B., & Salazar-Banda, G.R., E-mail: gianrsb@gmail.com.
The influence of the synthesis method of Ti/RuO{sub 2} electrodes on their stability and catalytic activity for electrochemical oxidation of the pesticide carbaryl.
Netherlands.
https://doi.org/10.1016/J.MATCHEMPHYS.2014.07.007
Santos, T. É.S., Silva, R. S., Carlesi Jara, C., Eguiluz, K. I.B., and Salazar-Banda, G.R., E-mail: gianrsb@gmail.com.
2014.
"The influence of the synthesis method of Ti/RuO{sub 2} electrodes on their stability and catalytic activity for electrochemical oxidation of the pesticide carbaryl."
Netherlands.
https://doi.org/10.1016/J.MATCHEMPHYS.2014.07.007.
@misc{etde_22398460,
title = {The influence of the synthesis method of Ti/RuO{sub 2} electrodes on their stability and catalytic activity for electrochemical oxidation of the pesticide carbaryl}
author = {Santos, T. É.S., Silva, R. S., Carlesi Jara, C., Eguiluz, K. I.B., and Salazar-Banda, G.R., E-mail: gianrsb@gmail.com}
abstractNote = {In this study, we developed dimensionally stable anodes of titanium covered with ruthenium oxides (Ti/RuO{sub 2}) using sol–gel, Pechini and ionic liquid (IL) methodologies. The electrochemical efficiency of these electrodes was then evaluated regarding electrochemical degradation of the pesticide carbaryl. The UV–visible spectroscopy measurements showed that the electrodes obtained by the IL and Pechini methods were more effective at pesticide degradation compared with the sol–gel electrode, especially at high current density values. Carbaryl degradation after 2 h of electrolysis at 30 mA cm{sup −2} was 96.4% and 95.5% for the electrodes obtained by the IL and Pechini methods, respectively, while the degradation was 65.0% for the electrodes obtained by the sol–gel method. Additionally, the electrodes prepared by the IL and Pechini methods showed greater physical and electrochemical stability when compared to electrodes obtained by the sol–gel method. Electrodes prepared by the IL method with a few covering layers (three) achieved an elevated and constant area in a more efficient way than electrodes prepared by the Pechini and sol–gel methods. This fact can be attributed to the higher viscosity of the ionic liquid-based precursor solution, which transfers a higher amount of Ru in one single layer, compared to the other methods studied, thus reducing the time for synthesis, the number of calcination steps and the production costs of electrodes. - Highlights: • We developed dimensionally stable anodes containing ruthenium oxides. • Sol–gel, Pechini and ionic liquid methodologies were used. • The ionic liquid method covers the surfaces more efficiently and with few layers. • The proposed method reduces the time and production cost for synthesis of electrodes. • The electrodes synthesized present high stability and pesticide degradation activity.}
doi = {10.1016/J.MATCHEMPHYS.2014.07.007}
journal = []
issue = {1-2}
volume = {148}
journal type = {AC}
place = {Netherlands}
year = {2014}
month = {Nov}
}
title = {The influence of the synthesis method of Ti/RuO{sub 2} electrodes on their stability and catalytic activity for electrochemical oxidation of the pesticide carbaryl}
author = {Santos, T. É.S., Silva, R. S., Carlesi Jara, C., Eguiluz, K. I.B., and Salazar-Banda, G.R., E-mail: gianrsb@gmail.com}
abstractNote = {In this study, we developed dimensionally stable anodes of titanium covered with ruthenium oxides (Ti/RuO{sub 2}) using sol–gel, Pechini and ionic liquid (IL) methodologies. The electrochemical efficiency of these electrodes was then evaluated regarding electrochemical degradation of the pesticide carbaryl. The UV–visible spectroscopy measurements showed that the electrodes obtained by the IL and Pechini methods were more effective at pesticide degradation compared with the sol–gel electrode, especially at high current density values. Carbaryl degradation after 2 h of electrolysis at 30 mA cm{sup −2} was 96.4% and 95.5% for the electrodes obtained by the IL and Pechini methods, respectively, while the degradation was 65.0% for the electrodes obtained by the sol–gel method. Additionally, the electrodes prepared by the IL and Pechini methods showed greater physical and electrochemical stability when compared to electrodes obtained by the sol–gel method. Electrodes prepared by the IL method with a few covering layers (three) achieved an elevated and constant area in a more efficient way than electrodes prepared by the Pechini and sol–gel methods. This fact can be attributed to the higher viscosity of the ionic liquid-based precursor solution, which transfers a higher amount of Ru in one single layer, compared to the other methods studied, thus reducing the time for synthesis, the number of calcination steps and the production costs of electrodes. - Highlights: • We developed dimensionally stable anodes containing ruthenium oxides. • Sol–gel, Pechini and ionic liquid methodologies were used. • The ionic liquid method covers the surfaces more efficiently and with few layers. • The proposed method reduces the time and production cost for synthesis of electrodes. • The electrodes synthesized present high stability and pesticide degradation activity.}
doi = {10.1016/J.MATCHEMPHYS.2014.07.007}
journal = []
issue = {1-2}
volume = {148}
journal type = {AC}
place = {Netherlands}
year = {2014}
month = {Nov}
}