硫化氢是污染处理和工业副产物中常见的有毒有害污染物，其资源化安全处置有重要意义。利用太阳光光电催化技术可以将硫化氢资源化分解为单质硫和氢气，但是现有光电催化技术需要外加偏电压而耗能，同时光电极稳定性差、效率低，限制了应用。项目以结构高度有序、光生电荷迁移性能好的金属钛基TiO2纳米管阵列（TNA）为光阳极基底材料，利用TNA与具有二维层状结构的MoS2构成异质结，形成具有三维结构、内电场结构、比表面积大、稳定性好的MoS2/TNA/Ti光阳极材料；以金属铜基Cu2O纳米线阵列为光阴极基底材料，利用ZnO与Cu2O形成的异质结，具有多支纳米线结构、内电场结构、比表面积大、稳定性好的特点，制备ZnO/Cu2O/Cu光阴极材料；在此基础上，建立可见光响应的、具有自偏压功能的、高效光电催化资源化安全处置H2S的系统与方法，并研究光阳极、光阴极以及反应系统分解硫化氢产氢、产硫的相关性能与微观机制。

Hydrogen sulfide is a typical dangerous contaminant and it can be widely found in waste treatment and byproduct from industry. Therefore, the safe treatment and resource recovery for H2S is very valuable. Photoelectrocatalytic method is approved to be feasible way for splitting H2S into H2 and S; however, as for now, it has some drawbacks including energy cost from external bias, poor stability and low efficiency, resulting in the limitation for treating H2S efficiently. This project proposed a heterojuction photoanode consisted of a highly ordered TNAs and 2D layered MoS2. As expected, the photocathode shows a 3D morphology with larger surface area, faster electron transportation and good stability. Based on Cu2O nanowires, photocathode are prepared by growing ZnO nanowires on the top to form heterojuction, which also shows larger surface area, faster electron transportation and good stability. Based on proposed photoanode and photocathode, the self-bias visible respond photoelectrocataltyic recovery of H2S system is established. This project will also investigate properties of both photoelectrodes as well as their performance and mechanism in the system for H2S recovery.