https://scholars.lib.ntu.edu.tw/handle/123456789/616365
標題: | Nanoscale redox mapping at the MoS2-liquid interface | 作者: | Du H.-Y. Huang Y.-F. Wong D. Tseng M.-F. Lee Y.-H. Wang C.-H. Lin C.-L. Hoffmann G. Chen K.-H. Chen L.-C. LI-CHYONG CHEN |
公開日期: | 2021 | 卷: | 12 | 期: | 1 | 來源出版物: | Nature Communications | 摘要: | Layered MoS2 is considered as one of the most promising two-dimensional photocatalytic materials for hydrogen evolution and water splitting; however, the electronic structure at the MoS2-liquid interface is so far insufficiently resolved. Measuring and understanding the band offset at the surfaces of MoS2 are crucial for understanding catalytic reactions and to achieve further improvements in performance. Herein, the heterogeneous charge transfer behavior of MoS2 flakes of various layer numbers and sizes is addressed with high spatial resolution in organic solutions using the ferrocene/ferrocenium (Fc/Fc+) redox pair as a probe in near-field scanning electrochemical microscopy, i.e. in close nm probe-sample proximity. Redox mapping reveals an area and layer dependent reactivity for MoS2 with a detailed insight into the local processes as band offset and confinement of the faradaic current obtained. In combination with additional characterization methods, we deduce a band alignment occurring at the liquid-solid interface. © 2021, The Author(s). |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85101738379&doi=10.1038%2fs41467-021-21660-z&partnerID=40&md5=d83f6cab982d334b207e0248387e08a9 https://scholars.lib.ntu.edu.tw/handle/123456789/616365 |
ISSN: | 20411723 | DOI: | 10.1038/s41467-021-21660-z | SDG/關鍵字: | disulfide;ferrocene;molybdenum;water;catalysis;catalyst;electrochemical method;interface;spatial analysis;two-dimensional modeling;Article;hydrogen evolution;liquid;oxidation reduction reaction;photocatalysis;scanning electrochemical microscopy |
顯示於: | 凝態科學研究中心 |
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