Titanium dioxide doped with transition metals (MxTi1?xO2, M: Ni, Co): synthesis and characterization for its potential application as photoanode |
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| Authors: | K Esquivel Ma G García J F J Rodríguez M Vega González L Escobar-Alarcón Luis Ortiz-Frade and Luis A Godínez |
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| Institution: | (1) Centro de Investigaci?n y Desarrollo Tecnol?gico en Electroqu?mica, S. C. Parque Tecnol?gico Quer?taro, Sanfandila, C.P. 76703, Pedro Escobedo, Quer?taro, Mexico;(2) Universidad de Guanajuato, Calle Lascura?n de Retana, C.P. 36000, Guanajuato, Guanajuato, Mexico;(3) Centro de Geociencias, Universidad Nacional Aut?noma de M?xico, Campus Juriquilla. Blvd. Juriquilla, 3001, C.P. 76230, Quer?taro, Mexico;(4) Departamento de F?sica, Instituto Nacional de Investigaciones Nucleares, Carr. M?xico-Toluca, C.P. 52750, Ocoyoacac, Estado de M?xico, Mexico; |
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| Abstract: | This study presents the synthesis of TiO2 doped with different amounts of Co and Ni, starting from a simple metallic titanium powder. A successful electrophoretic
deposition of these materials on ITO electrodes was achieved for its potential application as photoanodes. EDX, diffuse reflectance
UV–Vis spectroscopy, and XRD measurements gave information on the chemical composition of the material and the location of
the Ni or Co within the crystal structure of TiO2. Raman spectroscopy suggests that for a higher content of doping metal above a defined percentage, the formation of metal
oxide is promoted. A preliminary study of photoelectrocatalytic orange dye degradation shows higher color removal efficiency
as compared to the commercial TiO2 material. |
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