期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 45, 期 37, 页码 18645-18656出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2019.07.099
关键词
Colloidal MoS2 sheets; Metallic 1T phase; Tafel plot; Electrocatalyst; Hydrogen production
资金
- Science and Engineering Research Board, Department of Science and Technology, Government of India [EMR/2014/001219]
Exfoliated colloidal MoS2 nano sheets with a size alternating from 5 to 10 nm have been successfully synthesized. The synthesis is accomplished through the formation of MoS2/TiO2 heterostructure containing single or weakly bounded 2-3 layer MoS2 sheets coated on 10 -15 nm TiO2 nanoparticles, followed by selective removal of TiO2 from the MoS2/TiO2 heterostructure. The synthesized sheets contain predominantly 1T phase (80%) with 2H phase. The electrochemical assessment demonstrates that colloidal MoS2 nano sheets exhibits outstanding performance in electrocatalytic hydrogen evolution reaction (HER) with a very low Tafel slope of 56 mV/dec, low onset overpotential, and excellent cycling stability in acidic media. This process also offers a one-pot method for the large scale production of 1T-MoS2 in its nano dimension. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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