Photoelectrocatalytic performance of WO3/BiVO4 toward the dye degradation

被引：51
作者：
Chatchai, Ponchio [1 ]
Nosaka, Atsuko Y. [2 ]
Nosaka, Yoshio [2 ]
机构：
[1] Rajamangala Univ Technol Thanyaburi, Fac Sci & Technol, Dept Chem, Phathumtani 12110, Thailand
[2] Nagaoka Univ Technol, Dept Mat Sci & Technol, Nagaoka, Niigata 9402188, Japan
来源：
ELECTROCHIMICA ACTA | 2013年 / 94卷
关键词：
Photoelectrocatalysis; WO3/BiVO4; Methylene blue degradation; BICOMPONENT WO3/TIO2 FILMS; PHOTOELECTROCHEMICAL DEGRADATION; WATER OXIDATION; DIAZO DYE; NANOPARTICLES; PHOTOCATALYST; COMPOSITE; BIVO4; TIO2;
D O I：
10.1016/j.electacta.2013.01.152
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The photocatalytic (PC) and photoelectrocatalytic (PEC) properties of WO3/BiVO4 photo-anode for organic dye degradation under visible light irradiation were studied. The performance of the electrodes was investigated by monitoring the % degradation of methylene blue (MB) as a dye sample with UV-vis spectroscopy. To study the charge transfer:rate improvement, a Cu2O electrode was employed as a photocathode. In addition, Ag nanoparticles were deposited on both WO3/BiVO4 and Cu2O electrodes to study the effect on the catalytic activity for MB degradation. SEM, XRD and XPS techniques were used to confirm the morphologies and composition of the modified electrodes. The effects of pH and the irradiation wavelengths were investigated to understand the condition of MB degradation process. The highest performance for MB degradation was attained when WO3/BiVO4 was used as a photo-anode and Cu2O/Ag as a photo-cathode under the PEC process. (C) 2013 Elsevier Ltd. All rights reserved.
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页码：314 / 319
页数：6
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