Wide-field imaging of active site distribution on semiconducting transition metal dichalcogenide nanosheets in electrocatalytic and photoelectrocatalytic processes

Wen, Lisi1,2,3; Chen, Houkai1,2,3; Hao, Rui1,2,3

2024-09-01

10.1039/d4sc03640a

CHEMICAL SCIENCE   影响因子和分区

2041-6520

2041-6539

["Semiconducting transition metal dichalcogenide (TMD) nanosheets are promising materials for electrocatalysis and photoelectrocatalysis. However, the existing analytical approaches are inadequate at comprehensively describing the operation of narrow-bandgap semiconductors in these two processes. Furthermore, the distribution of the reactive sites on the electrode surface and the dynamic movement of carriers within these semiconductors during the reactions remain ambiguous. To plug these knowledge gaps, an in situ widefield imaging technique was devised in this study to investigate the electron distribution in different types of TMDs; notably, the method permits high-spatiotemporal-resolution analyses of electron-induced metal-ion reduction reactions in both electrocatalysis and photoelectrocatalysis. The findings revealed a unique complementary distribution of the active sites on WSe2 nanosheets during the two different cathodic processes. Our facile imaging approach can provide insightful information on the heterogeneous structure-property relationship at the electrochemical interfaces, facilitating the rational design of high-performance electrocatalytic/photoelectrocatalytic materials.","A widefield in situ metal-deposition-based molecular reaction imaging method has been developed to map electrochemical interfaces, unveiling the complementary distribution of electrocatalytic and photoelectrocatalytic active sites on p-type WSe2."]

SCI

英语

第一 ; 通讯

Science, Technology and Innovation Commission of Shenzhen Municipality["22074059","22374064"] ; National Natural Science Foundation of China[ZDSYS20230626090803004]

Chemistry

Chemistry, Multidisciplinary

WOS:001317837200001

ROYAL SOC CHEMISTRY

Web of Science

1.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Res Ctr Chem Biol & Omics Anal, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Shenzhen Key Lab Funct Prote, Shenzhen 518055, Peoples R China

Wen, Lisi,Chen, Houkai,Hao, Rui. Wide-field imaging of active site distribution on semiconducting transition metal dichalcogenide nanosheets in electrocatalytic and photoelectrocatalytic processes[J]. CHEMICAL SCIENCE,2024.

Wen, Lisi,Chen, Houkai,&Hao, Rui.(2024).Wide-field imaging of active site distribution on semiconducting transition metal dichalcogenide nanosheets in electrocatalytic and photoelectrocatalytic processes.CHEMICAL SCIENCE.

Wen, Lisi,et al."Wide-field imaging of active site distribution on semiconducting transition metal dichalcogenide nanosheets in electrocatalytic and photoelectrocatalytic processes".CHEMICAL SCIENCE (2024).