Simultaneous electricity generation and wastewater treatment in a photocatalytic fuel cell integrating electro-Fenton process
Simultaneous electricity generation and wastewater treatment in a photocatalytic fuel cell integrating electro-Fenton process
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集成电芬顿工艺的光催化燃料电池同时发电和废水处理
DOI:
10.1016/j.jpowsour.2019.03.033
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发表时间:
2019-05
影响因子:
9.2
通讯作者:
Zheng Dayang
中科院分区:
文献类型:
--
作者:
Xu Peng;Xu Hao;Zheng Dayang
A novel photocatalytic fuel cell system integrating electro-Fenton process comprised of WO3/W photoanode and Fe@Fe2O3/carbon felt cathode is constructed in an undivided chamber for pollutants degradation with simultaneous electricity production. Compared with single photocatalysis and electro-Fenton, the integration system achieves better organics removal efficiency. It is found that the increase of light intensity and electrolyte concentration could improve the performance, but too low or high pH value have a negative impact. The highest short circuit current density 0.59 mA/cm2and maximum power output 0.34 mW/cm2is obtained using 20 mg/L of methyl blue. Moreover, various indicators such as fill factor, coulombic efficiency, and cathodic H2O2efficiency are analyzed. Furthermore, a reasonable working principle is proposed, indicating that the integration system performance is strengthened by better electron/hole separation and enhanced radical reactions. Therefore, the composite system is an excellent candidate for simultaneous wastewater treatment and energy generation.
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