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Three‐Dimensional Structures of MoS 2 Nanosheets with Ultrahigh Hydrogen Evolution Reaction in Water Reduction
Author(s) -
Geng Xiumei,
Wu Wei,
Li Ning,
Sun Weiwei,
Armstrong Johnathan,
Alhilo Alaa,
Brozak Matthew,
Cui Jingbiao,
Chen Tarpin
Publication year - 2014
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201401328
Subject(s) - materials science , nanosheet , graphene , catalysis , molybdate , chemical engineering , nanotechnology , molybdenum disulfide , chemical vapor deposition , hydrogen , nickel , water splitting , hydrogen production , nanostructure , photocatalysis , composite material , metallurgy , organic chemistry , chemistry , engineering
The hydrogen evolution reaction in an alkaline environment using a non‐precious catalyst with much greater efficiency represents a critical challenge in research. Here, a robust and highly active system for hydrogen evolution reaction in alkaline solution is reported by developing MoS 2 nanosheet arrays vertically aligned on graphene‐mediated 3D Ni networks. The catalytic activity of the 3D MoS 2 nanostructures is found to increase by 2 orders of magnitude as compared to the Ni networks without MoS 2 . The MoS 2 nanosheets vertically grow on the surface of graphene by employing tetrakis(diethylaminodithiocarbomato)molybdate(IV) as the molybdenum and sulfur source in a chemical vapor deposition process. The few‐layer MoS 2 nanosheets on 3D graphene/nickel structure can maximize the exposure of their edge sites at the atomic scale and present a superior catalysis activity for hydrogen production. In addition, the backbone structure facilitates as an excellent electrode for charge transport. This precious‐metal‐free and highly efficient active system enables prospective opportunities for using alkaline solution in industrial applications.