期刊
ACS APPLIED MATERIALS & INTERFACES
卷 5, 期 24, 页码 12794-12798出版社
AMER CHEMICAL SOC
DOI: 10.1021/am404843b
关键词
MoS2 nanoplates; solvent-dependent control; hydrothermal synthesis; unsaturated sulfur atoms; hydrogen evolution reaction; electrocatalyst
资金
- Ministry of Education, Singapore [M4011020 RG8/12]
- National Research Foundation, Singapore
- Singapore National Research Foundation under its Campus for Research Excellence And Technological Enterprise (CREATE) programme
- [2009 NRF-CRP 001-032]
Well-defined ultrathin MoS2 nanoplates are developed by a facile solvent-dependent control route from single-source precursor for the first time. The obtained ultrathin nanoplate with a thickness of similar to 5 nm features high density of basal edges and abundant unsaturated active S atoms. The multistage growth process is investigated and the formation mechanism is proposed. Ultrathin MoS2 nanoplates exhibit an excellent activity for hydrogen evolution reaction (HER) with a small onset potential of 0.09 V, a low Tafel slope of 53 mV dec(-1), and remarkable stability. This work successfully demonstrates that the introduction of unsaturated active S atoms into ultrathin MoS2 nanoplates for enhanced electrocatalytic properties is feasible through a facial one-step solvent control method, and that this may open up a potential way for designing more efficient MoS2-based catalysts for HER.
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