Photoelectrocatalytic generation of H_(2)and S from toxic H2S by using a novel BiOI/WO_(3)nanoflake array photoanode

作     者：Jing BAI Bo ZHANG Jinhua LI Baoxue ZHOU Jing BAI;Bo ZHANG;Jinhua LI;Baoxue ZHOU

作者机构：School of Environmental Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China Shanghai Institute of Pollution Control and Ecological SecurityShanghai 200090China Key Laboratory of Thin Film and Microfabrication TechnologyShanghai Jiao Tong UniversityShanghai 200240China 

出 版 物：《Frontiers in Energy》 (能源前沿（英文版）)

年 卷 期：2021年第15卷第3期

页      面：744-751页

核心收录：

学科分类：0808[工学-电气工程] 07[理学] 070304[理学-物理化学(含∶化学物理)] 0807[工学-动力工程及工程热物理] 0703[理学-化学] 

基　　金：This work was supported by the National Key Research and Development Program of China(Nos.2018YFE0122300 and 2018YFB1502001) Shanghai International Science and Technology Cooperation Fund Project(No.18520744900) and the SJTU-AMED. 

主　　题：bismuth oxyiodide(BiOI)/tungsten trioxide(WO_(3))nano-flake arrays(NFA) photoelectrocatalytic(PEC) H_(2)S splitting H_(2) S 

摘      要：In this paper,a photoelectrocatalytic(PEC)recovery of toxic H_(2)S into H_(2)and S system was proposed using a novel bismuth oxyiodide(BiOI)/tungsten trioxide(WO_(3))nano-flake arrays(NFA)photoanode.The BiOI/WO_(3)NFA with a vertically aligned nanostructure were uniformly prepared on the conductive substrate via transformation of tungstate following an impregnating hydroxylation of BiI3.Compared to pure WO_(3)NFA,the BiOI/WO_(3)NFA promotes a significant increase of photocurrent by 200%.Owing to the excellent stability and photoactivity of the BiOI/WO_(3)NFA photoanode and I-/I-3 catalytic system,the PEC system toward splitting of H_(2)S totally converted S_(2)-into S without any polysulfide(Sn-x)under solar-light irradiation.Moreover,H_(2)was simultaneously generated at a rate of about 0.867 mL/(h·cm).The proposed PEC H_(2)S splitting system provides an efficient and sustainable route to recover H_(2)and S.