Nanoscale redox mapping at the MoS2-liquid interface
學年 109
學期 2
出版（發表）日期 2021-02-26
作品名稱 Nanoscale redox mapping at the MoS2-liquid interface
作品名稱（其他語言）
著者 He-Yun Du; Yi-Fan Huang; Deniz Wong; Mao-Feng Tseng; Yi-Hsin Lee; Chen-Hao Wang; Cheng-Lan Lin; Germar Hoffmann; Kuei-Hsien Chen; Li-Chyong Chen
單位
出版者
著錄名稱、卷期、頁數 Nature communications 12, 1321
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.
關鍵字 Energy science and technology;Materials science;Nanoscience and technology
語言 en
ISSN 2041-1723
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 是
國別 GBR
公開徵稿
出版型式 ,電子版,紙本
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