Journal
ENVIRONMENTAL SCIENCE & TECHNOLOGY
Volume 47, Issue 7, Pages 3490-3497Publisher
AMER CHEMICAL SOC
DOI: 10.1021/es303968n
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Funding
- Natural Science Foundation of China [20937003, 50878126]
- Ph.D. Program Foundation of Ministry of Education of China [20090073110033]
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A fuel cell that functioned as a photo fuel cell (PFC) when irradiated with UV light and as a dye self-photosensitization photo fuel cell (DSPFC) when irradiated with visible light was proposed and investigated in this study. The system included a BiOCl/Ti plate photoanode and a Pt cathode, and dye solutions were employed as fuel. Electricity was generated at the same time as the dyes were degraded. 26.2% and 24.4% Coulombic efficiency were obtained when 20 mL of 10 mg.L-1 Rhodamine B solution was treated with UV for 2 h and visible light for 3 h, respectively. Irradiation with natural and artificial sunlight was also evaluated. UV and visible light could be utilized at the same time and the photogenerated current was observed. The mechanism of electricity generation in BiOCl/Ti PFC and DSPFC was studied through degradation of the colorless salicylic acid solution. Factors that affect the electricity generation and dye degradation performance, such such as solution pH and cathode material, were also investigated and optimized.
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