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...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.展开更多
采用磁控溅射法在F-doped tin oxide(FTO)导电玻璃上溅射得到一层致密钨膜,采用水热法制备了纳米片状WO3薄膜,运用XRD、SEM、UV-DRS对产物结构形貌及光吸收性能进行了表征,并运用电化学工作站对产物的光电性能进行了检测,结果表明产物在...采用磁控溅射法在F-doped tin oxide(FTO)导电玻璃上溅射得到一层致密钨膜,采用水热法制备了纳米片状WO3薄膜,运用XRD、SEM、UV-DRS对产物结构形貌及光吸收性能进行了表征,并运用电化学工作站对产物的光电性能进行了检测,结果表明产物在120℃1.5 M HNO3环境中水热处理3 h后,透明性较好且光吸收性能最佳,而在450℃煅烧3 h后的光电流最大。展开更多
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.
文摘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.
文摘采用磁控溅射法在F-doped tin oxide(FTO)导电玻璃上溅射得到一层致密钨膜,采用水热法制备了纳米片状WO3薄膜,运用XRD、SEM、UV-DRS对产物结构形貌及光吸收性能进行了表征,并运用电化学工作站对产物的光电性能进行了检测,结果表明产物在120℃1.5 M HNO3环境中水热处理3 h后,透明性较好且光吸收性能最佳,而在450℃煅烧3 h后的光电流最大。
