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MoS₂ nanotubes loaded with TiO₂ nanoparticles for enhanced electrocatalytic hydrogen evolution

Author:
Feng, Bo, Liu, Chuntao, Yan, Weiyi, Geng, Jianxin, Wang, Guimin
Source:
RSC advances 2019 v.9 no.45 pp. 26487-26494
ISSN:
2046-2069
Subject:
catalysts, catalytic activity, electrochemistry, hot water treatment, hydrogen production, molybdenum disulfide, nanoparticles, nanotubes, synergism, titanium dioxide
Abstract:
Efficient and stable non-precious metal catalysts composed of earth-abundant elements are crucial to the hydrogen evolution reaction (HER) in high-energy conversion efficiency. Herein, TiO₂/MoS₂-NTs catalyst, in which the MoS₂ nanotubes were loaded with TiO₂ nanoparticles, have been synthesized via a facile solvothermal and hydrothermal method. The as-prepared TiO₂/MoS₂-NTs electrocatalyst demonstrated enhanced electrocatalytic hydrogen evolution performance compared with MoS₂-NTs. Electrochemical measurements reveal the overpotential and Tafel slope of as-prepared TiO₂/MoS₂-NTs are −0.21 V and 42 mV dec⁻¹. The HER improvement is proposed to be attributed to the increased edge sites results from the interfaces and synergic effect between TiO₂ nanoparticles and MoS₂ nanotubes.
Agid:
6611961