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Vol. 25 No. 15 (2013): Vol 25 Issue 15

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Fabrication of TiO2/CdS/TiO2 Nanotube/Ti Mesh Electrode and Application in Photoelectro-catalytic Cell System for Degradation of Methylene Blue under Visible Light Illumination

https://doi.org/10.14233/ajchem.2013.14826
Qingyi Zeng
Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, P.R. China ; University of Chinese Academy of Sciences, Beijing 100049, P.R. China
Xinjun Li
Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, P.R. China
Min Xi
Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, P.R. China
Liangpeng Wu
Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, P.R. China
Zhen Xu
Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, P.R. China ; University of Chinese Academy of Sciences, Beijing 100049, P.R. China
Zhouyu Zhou
Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, P.R. China

Corresponding Author(s) : Zhouyu Zhou

zhouzy@ms.giec.ac.cn

Asian Journal of Chemistry, Vol. 25 No. 15 (2013): Vol 25 Issue 15

Abstract

A TiO2/CdS/TiO2 nanotube/Ti mesh composite structure photoelectrocatalyst was fabricated by decorating the anodized TiO2 nanotubes (TNT) on Ti mesh with CdS nanoparticles via successive ionic layer adsorption and reaction and subsequently coated with a TiO2 protection layer via a vacuum dip-coating process. For the photoelectrocatalysts severed as the photoanodes, the transient photocurrent (iph) and linear sweep voltammetry (LSV) were investigated in a three-electrode system and the photoelectrocatalytic performance was evaluated in a photoelectrocatalytic cell (PEC) system for degradation of methylene blue under visible light illumination. The results show that the TiO2 nanotube arrays are decorated with relatively uniform CdS nanoparticles on the tube wall. Owing to the protection of TiO2 layer, the TiO2/CdS/TiO2 nanotube/Ti mesh electrode shows a stable and superior photoelectrocatalytic performance. The superimposition of mesh electrode can remarkably increase the photoelectrocatalytic efficiency for the degradation of methylene blue.

Keywords

Ti mesh Nanotube array CdS Protection layer Photoelectrocatalytic Methylene blue
Zeng, Q., Li, X., Xi, M., Wu, L., Xu, Z., & Zhou, Z. (2013). Fabrication of TiO2/CdS/TiO2 Nanotube/Ti Mesh Electrode and Application in Photoelectro-catalytic Cell System for Degradation of Methylene Blue under Visible Light Illumination. Asian Journal of Chemistry, 25(15), 8527–8532. https://doi.org/10.14233/ajchem.2013.14826
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