Aerated visible-light responsive photocatalytic fuel cell for wastewater treatment with producing sustainable electricity in neutral solution
Aerated visible-light responsive photocatalytic fuel cell for wastewater treatment with producing sustainable electricity in neutral solution
复制标题
用于废水处理的曝气可见光响应光催化燃料电池，在中性溶液中产生可持续电力
DOI：
10.1016/j.cej.2014.04.046
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发表时间：
2014-09-15
影响因子：
15.1
通讯作者：
Cai, Weimin
中科院分区：
文献类型：
--
作者：
Chen, Quanpeng;Bai, Jing;Cai, Weimin
设计了一种由纳米孔WO 3/W光阳极和Pt改性商用硅光伏电池（Pt/PVC）光电阴极组成的充气式可见光响应光催化燃料电池（PFC）。该系统可用于在中性溶液中降解有机物并产生可持续的电能。充气可显著增加Pt/PVC光电阴极的电子消耗，因为电子更容易与O-2分子反应。由于Pt/PVC光电阴极中的空穴被分离出来，吸引了WO 3/W光电阳极中的电子，使得外电路中的电流明显增加。结果表明，曝气时的短路电流密度（J（sc））达到350 μ A·cm ~（-2），比不曝气时的短路电流密度增加一倍以上。WO 3/W光阳极的活性空穴更容易分离，有利于有机物的降解。以亚甲基蓝为模型化合物。在PFC系统中90 min即可完全脱色。过程中稳定的光电流表明该系统能够长时间处理废水并产生电能。(C)2014爱思唯尔有限公司版权所有。
Aerated visible-light responsive photocatalytic fuel cell (PFC) consisted of a nanopore WO3/W photoanode and Pt modified commercial silicon photovoltaic cell (Pt/PVC) photocathode was designed. This system could be used for organic compounds degradation with producing sustainable electricity in neutral solution. Aeration could significantly increase the consumption of electrons of Pt/PVC photocathode since the electrons were more easily to react with O-2 molecules. The electricity in the external circuit showed obviously increase resulting from that more holes of Pt/PVC photocathode were separated to attract the electrons of WO3/W photoanode. The result showed that the short circuit current density (J(sc)) in the case of aeration reached 350 mu A cm(-2), which was more than double that in the absence of aeration. The active holes of WO3/W photoanode will be more easily separated for the accelerated organic compounds degradation. Methylene blue was used as the model recalcitrant organic compound. It could be completely decolorized in the PFC system in 90 min. The stable photocurrent in the process indicated that this system was capable for wastewater treatment with electricity production for long time scale. (C) 2014 Elsevier B.V. All rights reserved.