Molybdenum Disulfide Modified by Laser Irradiation for Catalyzing Hydrogen Evolution

Chao Meng, Meng Chang Lin, Xi Wen Du, Yue Zhou

研究成果: 雜誌貢獻文章同行評審

33 引文 斯高帕斯(Scopus)

摘要

As a low-cost and promising electrocatalyst for hydrogen evolution reaction (HER), molybdenum disulfide (MoS 2 ) possesses both an inert basal plane and catalytically active edges. As a result, considerable efforts have been made to activate the MoS 2 basal plane for improving the HER activity. Herein, we first employed laser ablation in liquid to create plentiful sulfur (S)-vacancies in the basal plane of 2H-MoS 2 nanosheets under ambient conditions. The experimental measurements and theoretical calculations prove that S vacancies in the basal plane can serve as the additional active sites and optimize the free energy change for hydrogen adsorption (ΔG H∗ ) at the same time. As a result, in comparison with pristine MoS 2 (P-MoS 2 ), laser treated MoS 2 (L-MoS 2 ) realizes a significant improvement in the HER activity. Our work represents a facile method to enhance the catalytic performance of 2H-MoS 2 nanosheets and may help to guide the synthesis of other efficient two-dimensional metal chalcogenide catalysts.
原文英語
頁(從 - 到)6999-7003
頁數5
期刊ACS Sustainable Chemistry and Engineering
7
發行號7
DOIs
出版狀態已發佈 - 4月 2019
對外發佈

ASJC Scopus subject areas

  • 化學 (全部)
  • 環境化學
  • 化學工程 (全部)
  • 可再生能源、永續發展與環境

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