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 

机构地区：[1]School of Environmental Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China [2]Shanghai Institute of Pollution Control and Ecological Security,Shanghai 200090,China [3]Key Laboratory of Thin Film and Microfabrication Technology,Shanghai Jiao Tong University,Shanghai 200240,China

出　　处：《Frontiers in Energy》2021年第3期744-751,共8页能源前沿（英文版）

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.

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.

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

分 类 号：O64[理学—物理化学]