Construction of MoO2@MoS2 heterostructures in situ on carbon cloth for the hydrogen evolution reaction

MoS2 as one graphene-like 2D layered transition metal sulfide has attracted great attention. However, its application for the HER is still restricted by the poor electrical conductivity and structural restacking. In this work, we developed a facile method to prepare MoO2@MoS2 heterostructures in sit...

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Bibliographic Details
Published in:New journal of chemistry 2021-11, Vol.45 (42), p.19826-19830
Main Authors: Tian, Jingyang, Yang, Chundi, Liu, Zhirui, Li, Funan, He, Xiao, Chen, Wei, Xia, Nan Nan, Lin, Chong
Format: Article
Language:English
Subjects:
Carbon
Cloth
Electrical resistivity
Graphene
Heterostructures
Hydrogen evolution reactions
Molybdenum disulfide
Molybdenum oxides
Sulfuric acid
Synergistic effect
Transition metals
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Summary:MoS2 as one graphene-like 2D layered transition metal sulfide has attracted great attention. However, its application for the HER is still restricted by the poor electrical conductivity and structural restacking. In this work, we developed a facile method to prepare MoO2@MoS2 heterostructures in situ by partial conversion of MoOx into MoS2 on carbon cloth. Based on the two-time hydrothermal process, the MoS2 nanosheets can be dispersed and grow on carbon cloth. Excellent electrochemical HER activity of MoO2@MoS2/CC-2 can be achieved with a low overpotential of 115 mV at 10 mA cm−2 (η10) in 0.5 M H2SO4. Furthermore, it still shows durable electrocatalytic stability for 13 h. The outstanding electrocatalytic activity may be ascribed to the synergistic effect between the MoO2 and MoS2 heterostructures.
ISSN:1144-0546
1369-9261
DOI:10.1039/d1nj04245a