All The Catalytic Active Sites of MoS2 for Hydrogen Evolution
作者： Guoqing Li , Du Zhang , Qiao Qiao , Yifei Yu , David Peterson
DOI: 10.1021/JACS.6B05940
关键词: Grain boundary 、 Sulfur 、 Crystal structure 、 Tafel equation 、 Chemistry 、 Catalysis 、 Active site 、 Hydrogen evolution 、 Active edge 、 Crystallography
摘要: MoS2 presents a promising low-cost catalyst for the hydrogen evolution reaction (HER), but the understanding about its active sites has remained limited. Here we present an unambiguous study of the catalytic activities of all possible reaction sites of MoS2, including edge sites, sulfur vacancies, and grain boundaries. We demonstrate that, in addition to the well-known catalytically active edge sites, sulfur vacancies provide another major active site for the HER, while the catalytic activity of grain boundaries is much weaker. The intrinsic …
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