High-performance Bi_(2)S_(3)/ZnO photoanode enabled by interfacial engineering with oxyanion for efficient photoelectrochemical water oxidation  

作　　者：Ying-Chu Chen Hsiang-Yu Jui Yichen Feng Yun-Hsiang Lu Yu-Kuei Hsu 

机构地区：[1]Department of Chemical Engineering&Biotechnology,"National Taipei University of Technology",No.1,Sec.3,Zhong-Xiao E.Rd.,Da'an Dist.,Taipei City 10608,Taiwan,China [2]Department of Opto-Electronic Engineering,"National Dong Hwa University",No.1,Sec.2,Da Hsueh Road,Shoufeng,Hualien 97401,Taiwan,China [3]China-UK Low Carbon College,Shanghai Jiao Tong University,No.3,Yinlian Road,Lingang,Shanghai 201306,China

出　　处：《Nano Research》2024年第7期5996-6005,共10页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China and Shanghai Jiao Tong University(Nos.22109096,WF220528005 and ZXDF280001/024).

摘　　要：In the present contribution,we demonstrate that the sluggish kinetics of oxygen evolution reaction(OER)over the bismuth sulfide(Bi_(2)S_(3))photoanode,which severely restricts its photoelectrochemical activity,is markedly accelerated by employing a sulfatecontaining electrolyte.First-principle calculation points to the spontaneous adsorption of sulfate(SO_(4)^(2−))on Bi_(2)S_(3)and its capacity of stabilizing the OER intermediates through hydrogen bonding,which is further reinforced by increasing the local density of states near the Fermi level of Bi_(2)S_(3).Meanwhile,the electron transfer is also promoted to synergistically render the ratedetermining step(from O*to OOH*)of OER over Bi_(2)S_(3)kinetically facile.Last but not least,benefitting from such enhanced OER activity and efficient charge separation resulted from depositing Bi_(2)S_(3)on the zinc oxide nanorods(ZnO NRs),forming a core–shell heterojunction,its photocurrent density achieves 8.61 mA·cm^(−2)at 1.23 VRHE,far surpassing those reported for additional Bi_(2)S_(3)-based and several state-of-the-art photoanodes in the literature and further exceeding their theoretical limit.The great promise of the Bi_(2)S_(3)/ZnO NRs is in view of such outperformance,the superior Faradaic yield of oxygen of more than~80%and the outstanding half-cell applied bias photon-to-current efficiency of~1%well corroborated.

关 键 词：photoelectrochemical water oxidation oxyanion adsorption electronic structure regulation oxygen evolution reaction(OER)intermediates stabilization Bi_(2)S_(3) 

分 类 号：O64[理学—物理化学]