双光电极光催化燃料电池降解亚甲基蓝及同步产电

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中图分类号：TB34 文献标志码：A

Abstract：To construct a photocatalytic fuel cell system with excellent performance，zinc indium disulfide Znln2S4- titanium oxide TiO 2 nanotube array-titanium Ti photoelectrodes were prepared by anodic oxidation and hydrothermal methods，and coupling compound of cuprous oxide and copper oxide CuxO-copper Cu photoelectrodes were prepared by wet chemical method.UV-visible diffse reflectance spectrum analysis，X-raydifractionanalysis，scanning electron microscopy，linear scanning cyclic voltammetry and other methods were used to characterizethe phase structure characteristicsand photoelectrochemical propertiesof theelectrodes.Theperformanceandmechanismof thedual-photoelectrode photocatalytic fuel cell system in degrading methylene blueandgenerating electricitysimultaneouslyundersimulated sunlight were investigated. The results show that Znln2S4 nanosheets are uniformly loaded on the surface of TiO2 nanotube array to form heterojunction interfaces，and the CuxO nanowirearry is grown insituonthesurface ofcopper sheets. The prepared photoelectrodesandphotocathodes haveexcellent lightutilizationeficiencyandphotoelectrochemical performance.The instantaneous photocurent densityof the dual-photoelectrode photocatalytic fuel cellsystemcanreach up to 0.219mA/cm2 .Under simulated solar irradiation，the methylene blue removal rate is 97% in 40min ，and the reusability is good.

Keywords： photocatalytic fuel cell；photoelectrode；nanotube array ；organic pollutant degradation

光催化氧化技术已被广泛研究并应用于降解环境介质中的有机污染物。（剩余13355字）