Electrochemical mediated oxidation of phenol using Ti/IrO2 and Ti/Pt-SnO2-Sb2O5 electrodes
<p class="PaperAbstract"><span lang="EN-US">The indirect electrochemical oxidation of phenol has been studied in at Ti/IrO<sub>2</sub> and Ti/Pt-SnO<sub>2</sub>-Sb<sub>2</sub>O<sub>5</sub>, electrodes by bulk electrolysi...
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| Format: | Article |
| Language: | English |
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International Association of Physical Chemists (IAPC)
2014-12-01
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| Series: | Journal of Electrochemical Science and Engineering |
| Subjects: | |
| Online Access: | http://www.pub.iapchem.org/ojs/index.php/JESE/article/view/129 |
| _version_ | 1819078346950049792 |
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| author | Jéssica Pires de Paiva Barreto Elisma Vieria dos Santos Mariana Medeiros Oliveira Djalma Ribeiro da Silva João Fernandes de Souza Carlos Alberto Martinez-Huitle |
| author_facet | Jéssica Pires de Paiva Barreto Elisma Vieria dos Santos Mariana Medeiros Oliveira Djalma Ribeiro da Silva João Fernandes de Souza Carlos Alberto Martinez-Huitle |
| author_sort | Jéssica Pires de Paiva Barreto |
| collection | DOAJ |
| description | <p class="PaperAbstract"><span lang="EN-US">The indirect electrochemical oxidation of phenol has been studied in at Ti/IrO<sub>2</sub> and Ti/Pt-SnO<sub>2</sub>-Sb<sub>2</sub>O<sub>5</sub>, electrodes by bulk electrolysis experiments under galvanostatic control. The obtained results have clearly shown that the electrode material is an important parameter for the optimization of such processes, deciding of their mechanism and of the oxidation products. Different current efficiencies were obtained at Ti/IrO<sub>2</sub> and Ti/Pt-SnO<sub>2</sub>-Sb<sub>2</sub>O<sub>5</sub>, depending on the applied current density in the range from 10, 20 and 30 mA cm<sup>−2</sup>. Also the effect of the amount of NaCl dissolved was studied. It has been observed that the electrochemical processes (direct/indirect) favor specific oxidation pathways depending on electrocatalytic material. Phenol degradation generates several intermediates eventually leading to complete mineralization, as indicated by the results obtained with the High-Performance Liquid Chromatography (HPLC) technique.</span></p> |
| first_indexed | 2024-12-21T19:11:38Z |
| format | Article |
| id | doaj.art-a2891aa7961748879e16eca23b85bf32 |
| institution | Directory Open Access Journal |
| issn | 1847-9286 |
| language | English |
| last_indexed | 2024-12-21T19:11:38Z |
| publishDate | 2014-12-01 |
| publisher | International Association of Physical Chemists (IAPC) |
| record_format | Article |
| series | Journal of Electrochemical Science and Engineering |
| spelling | doaj.art-a2891aa7961748879e16eca23b85bf322022-12-21T18:53:11ZengInternational Association of Physical Chemists (IAPC)Journal of Electrochemical Science and Engineering1847-92862014-12-014425927010.5599/jese.2014.0069103Electrochemical mediated oxidation of phenol using Ti/IrO2 and Ti/Pt-SnO2-Sb2O5 electrodesJéssica Pires de Paiva Barreto0Elisma Vieria dos Santos1Mariana Medeiros Oliveira2Djalma Ribeiro da Silva3João Fernandes de Souza4Carlos Alberto Martinez-Huitle5Federal University of Rio Grande do Norte, Institute of Chemistry, Campus Universitario, Lagoa Nova, RN - BrazilFederal University of Rio Grande do Norte, Institute of Chemistry, Campus Universitario, Lagoa Nova, RN - BrazilFederal University of Rio Grande do Norte, Institute of Chemistry, Campus Universitario, Lagoa Nova, RN - BrazilFederal University of Rio Grande do Norte, Institute of Chemistry, Campus Universitario, Lagoa Nova, RN - BrazilFederal University of Rio Grande do Norte, CCET – Department of Chemical Engineering, Lagoa Nova - CEP 59.072-970, RN, BrazilFederal University of Rio Grande do Norte, Institute of Chemistry, Campus Universitario, Lagoa Nova, RN - Brazil<p class="PaperAbstract"><span lang="EN-US">The indirect electrochemical oxidation of phenol has been studied in at Ti/IrO<sub>2</sub> and Ti/Pt-SnO<sub>2</sub>-Sb<sub>2</sub>O<sub>5</sub>, electrodes by bulk electrolysis experiments under galvanostatic control. The obtained results have clearly shown that the electrode material is an important parameter for the optimization of such processes, deciding of their mechanism and of the oxidation products. Different current efficiencies were obtained at Ti/IrO<sub>2</sub> and Ti/Pt-SnO<sub>2</sub>-Sb<sub>2</sub>O<sub>5</sub>, depending on the applied current density in the range from 10, 20 and 30 mA cm<sup>−2</sup>. Also the effect of the amount of NaCl dissolved was studied. It has been observed that the electrochemical processes (direct/indirect) favor specific oxidation pathways depending on electrocatalytic material. Phenol degradation generates several intermediates eventually leading to complete mineralization, as indicated by the results obtained with the High-Performance Liquid Chromatography (HPLC) technique.</span></p>http://www.pub.iapchem.org/ojs/index.php/JESE/article/view/129Phenolanode materialchlorine active species, indirect electrochemical oxidation |
| spellingShingle | Jéssica Pires de Paiva Barreto Elisma Vieria dos Santos Mariana Medeiros Oliveira Djalma Ribeiro da Silva João Fernandes de Souza Carlos Alberto Martinez-Huitle Electrochemical mediated oxidation of phenol using Ti/IrO2 and Ti/Pt-SnO2-Sb2O5 electrodes Journal of Electrochemical Science and Engineering Phenol anode material chlorine active species, indirect electrochemical oxidation |
| title | Electrochemical mediated oxidation of phenol using Ti/IrO2 and Ti/Pt-SnO2-Sb2O5 electrodes |
| title_full | Electrochemical mediated oxidation of phenol using Ti/IrO2 and Ti/Pt-SnO2-Sb2O5 electrodes |
| title_fullStr | Electrochemical mediated oxidation of phenol using Ti/IrO2 and Ti/Pt-SnO2-Sb2O5 electrodes |
| title_full_unstemmed | Electrochemical mediated oxidation of phenol using Ti/IrO2 and Ti/Pt-SnO2-Sb2O5 electrodes |
| title_short | Electrochemical mediated oxidation of phenol using Ti/IrO2 and Ti/Pt-SnO2-Sb2O5 electrodes |
| title_sort | electrochemical mediated oxidation of phenol using ti iro2 and ti pt sno2 sb2o5 electrodes |
| topic | Phenol anode material chlorine active species, indirect electrochemical oxidation |
| url | http://www.pub.iapchem.org/ojs/index.php/JESE/article/view/129 |
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