Directly Unveiling the Photothermal Corrosion of BiVO4 via In-situ Transmission Electron Microscopy  

作　　者：WANG Lindong SUN Jingyi WANG Lang LI Yu HU Zhiyi SU Baolian 

机构地区：[1]State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,International School of Materials Science and Engineering(ISME),Wuhan University of Technology,Wuhan 430070,P.R.China [2]Nanostructure Research Centre(NRC),Wuhan University of Technology,Wuhan 430070,P.R.China [3]CMI(Laboratory of Inorganic Materials Chemistry),University of Namur,rue deBruxelles 61,B-5000Namur,Belgium

出　　处：《Chemical Research in Chinese Universities》2025年第2期351-357,共7页高等学校化学研究(英文版)

基　　金：supported by the National Key R&D Program of China(No.2021YFE0115800);the National Natural Science Foundation of China(Nos.22275142,22293020,22293022,U22B6011,U20A20122,52103285);the Program of Introducing Talents of Discipline to Universities-Plan‘111’from the Ministry of Science and Technology and the Ministry of Education of China(No.B20002);the Natural Science Foundation of Hubei Province,China(No.2023AFB605);the Dawning Program of Wuhan,China(No.2023020201020306).

摘　　要：BiVO4(BVO)is widely utilized in photothermal catalysis because of its favorable bandgap structure(2.4 eV),excellent photo response capabilities and high thermal stability.However,the mechanism of BVO photothermal corrosion still remains unclear due to the lack of visualized characterization on the degradation process in real time.Herein,we directly unveil the photothermal-induced microstructural evolution of BVO through in-situ heating(scanning)transmission electron microscopy[(S)TEM].The results indicate that the electrons are the initiating condition(“switch”)for the photothermal corrosion of BVO,resulting in the precipitation of Bi and reduction of V5+to V3+in the substrate,while the thermal field facilitates the evaporation of Bi and the recrystallization of V2O3.This work sheds light on the mechanism of BVO photothermal corrosion in dynamics and provides significant insights into the photothermal synergistic effects.

关 键 词：BIVO4 Photothermal corrosion In-situ transmission electron microscopy(TEM) Photothermal catalysis Structural evolution 

分 类 号：O643.36[理学—物理化学]