Emerging Bismuth-Based Step-Scheme Heterojunction Photocatalysts for Energy and Environmental Applications  

作　　者：Diejing Feng Xinyu Li Yanping Liu Xiaobo Chen Shijie Li 

机构地区：[1]National Engineering Research Center for Marine Aquaculture,Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province,Institute of Innovation&Application,Zhejiang Ocean University,Zhoushan,Zhejiang 316022 [2]Department of Chemistry,University of Missouri–Kansas City,Kansas City,Missouri 64110

出　　处：《Renewables》2023年第5期485-513,共29页可再生能源（英文）

基　　金：jointly supported by the Fundamental Research Funds for Zhejiang Provincial Universities and Research Institutes(grant no.2022J002);Natural Science Foundation of Zhejiang Province(grant nos.LY20E080014 and TGN23E080003);the National Natural Science Foundation of China(grant no.51708504);the Science and Technology Project of Zhoushan(grant no.2022C41011).

摘　　要：Photocatalysis has been expected to be a promising advanced oxidation process to endlessly convert exhaustless solar energy into storable,transportable,and usable chemical energy.As a kind of visible light-response semiconductors,Bi-based semiconductors can be developed into step-scheme(S-scheme)heterojunction photocatalysts,consisting of a reductive photocatalyst(RP)and an oxidative photocatalyst(OP)with band edge bending.This review sums up the state-of-the-art progress in Bi-based S-scheme heterojunctions,as well as the in-/ex-situ experiments and theoretical calculations to uncover the unique heterostructure and charge transfer mechanism of Bi-based S-scheme heterojunctions in depth.We can find that Bi-based S-scheme heterojunction photocatalysts have advantages in impeding the recombination of photo-induced electron-hole pairs,expediting the charge transfer,broadening solar energy utilization,and maximizing the potential energy of photo-redox reaction sites.Additionally,the recently published work on the potential applications of Bi-based S-scheme heterojunctions is also summarized,including photocatalytic H_(2) production,CO_(2) reduction with water,pollutant degradation,H_(2)O_(2) production,and N_(2) photofixation for ammonia and urea production by comparing and discussing their photocatalytic efficiency.On the basis of research progress,the immediate challenges and future perspectives of Bi-based S-scheme heterojunction photocatalysts are critically debated.

关 键 词：Bismuth-based(Bi-based)semiconductors S-scheme heterojunction internal electric field Fermi level PHOTOCATALYSIS vacancy engineering 

分 类 号：O643.36[理学—物理化学]