A photoelectrochemical cell for pollutant degradation and simultaneous H2 generation |
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| Authors: | Jin Han Yaru Bian Xiuzhen Zheng Xiaoming Sun Liwu Zhang |
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| Institution: | a Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China;
b College of Science, Beijing University of Chemistry Technology, Beijing 100029, China |
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| Abstract: | A visible-light driven photoelectrochemical (PEC) cell comprised of nanostructured BiVO4 photoanode and Pt cathode was established for organic compounds degradation with simultaneous H2 generation. BiVO4 electrode film fabricated by a simple drip-coating method showed a porous nanostructure and an intense absorption in visible light range. The PEC process possesses a rate of about 0.3207 h-1 for MO degradation, which is 8 times and 64 times faster than electrocatalytic (EC) and photocatalytic (PC) process, respectively. A simultaneous H2 generation via the PEC process was also observed and a rate of 34.44 μmol h-1 cm-2 for H2 generation was measured, which is 3 folds more efficient than the EC process. The nanostructured BiVO4 photoanode shows outstanding PEC photocurrent density and recycle performance. The proposed PEC system would be a promising strategy for wastewater treatment and energy recovery with an outstanding stability and recyclability performance. |
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| Keywords: | Solar energy Hydrogen Azo dye PEC BiVO4 |
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