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The relationship between the structure and electrocatalytic properties of TiO2 electrodes doped with CeO2 |
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| Authors: | Célia Machado Ronconi Paulo Roberto Zanotto Ursula Brocksom Pedro A.P. Nascente Ernesto Chaves Pereira |
| Affiliation: | (1) Departamento de Química, Universidade Federal de São Carlos, Centro Multidisciplinar para o Desenvolvimento de Materiais Cerâmicos (CMDMC), Caixa Postal 676, São Carlos, SP, 13560-970, Brazil;(2) Laboratório de Química Orgânica Sintética, Universidade Federal de São Carlos, Caixa Postal, 676, São Carlos, SP, 13560-970, Brazil;(3) Departamento de Engenharia de Materiais, Universidade Federal de São Carlos, Caixa Postal, 676, São Carlos, SP, 13560-970, Brazil |
| Abstract: | This paper describes the study of the preparation of Ti/Ti1-xCexO2 electrodes using the Pechini method and their application for the electroreduction of nitrobenzene in aqueous acid medium. The electrodes were studied using X-ray diffraction, and scanning electron microscopy and it was found that the electrocatalytic properties are influenced by the microstructure and morphology of the electrodes. All doped electrodes presented an enhanced performance for nitrobenzene electroreduction when compared to pure TiO2. The Ti0.995Ce0.005O2 electrode presented the best performance, with an increase of 58% in the aniline yield under galvanostatic electrolysis conditions. |
| Keywords: | CeO2 electrocatalysis nitrobenzene electroreduction oxide electrodes Pechini method TiO2 |
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