School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China.
School of Sciences, China Pharmaceutical University, Nanjing 211198, PR China.
J Hazard Mater. 2016 Jul 5;311:51-62. doi: 10.1016/j.jhazmat.2016.02.052. Epub 2016 Feb 26.
In this paper, a novel dual heterojunction Photocatalytic Fuel Cell (PFC) system based on BiVO4/TiO2 nanotubes/FTO photoanode and ZnO/CuO nanowires/FTO photocathode has been designed. Compared with the electrodes in PFCs reported in earlier literatures, the proposed heterojunction not only enhances the visible light absorption but also offers a higher photoconversion efficiency. In addition, the nanostructured heterojunction owns a large surface area that ensures a large amount of active sites for organics degradation. The performance of the PFC base on the dual photoelectrodes was also studied herein. The results indicated that the PFC in ths paper exhibits a superior performance and its JV(max) reached 0.116 mw cm(-2), which is higher than that in most of reported PFCs with a Pt-free photocathode. When hazardous organic compounds such as methyl orange, Congo red and methylene blue were decomposed, the degradation rates obtained is to be 76%, 83%, and 90% respectively after 80 mins reaction. The proposed heterojunction photoelectrodes provided great potential for cost-effective and high-efficiency organic pollutants degradation and electricity generation in a PFC system.
本文设计了一种基于 BiVO4/TiO2 纳米管/FTO 光阳极和 ZnO/CuO 纳米线/FTO 光阴极的新型双异质结光催化燃料电池 (PFC) 系统。与早期文献中报道的 PFC 中的电极相比，所提出的异质结不仅增强了可见光吸收，而且提供了更高的光电转换效率。此外，纳米结构的异质结具有大的表面积，确保了大量的活性位点用于有机物降解。本文还研究了基于双光电电极的 PFC 的性能。结果表明，本文中的 PFC 表现出优异的性能，其 JV(max)达到 0.116 mw cm(-2)，高于大多数具有无 Pt 光阴极的报道的 PFC。当危险有机化合物如甲基橙、刚果红和亚甲基蓝被分解时，在 80 分钟的反应后，分别获得 76%、83%和 90%的降解率。所提出的异质结光电电极为在 PFC 系统中进行高效、低成本的有机污染物降解和发电提供了巨大的潜力。
