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Ultrasmall Transition Metal Carbide Nanoparticles Encapsulated in N, S‐Doped Graphene for All‐pH Hydrogen Evolution
Author(s) -
Zhang Liping,
Yang Hongbin,
Wanigarathna Darshika K. J. A.,
Liu Bin
Publication year - 2018
Publication title -
small methods
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.66
H-Index - 46
ISSN - 2366-9608
DOI - 10.1002/smtd.201700353
Subject(s) - catalysis , noble metal , graphene , materials science , nanoparticle , carbide , transition metal , chemical engineering , hydrogen , nanotechnology , metal , doping , inorganic chemistry , chemistry , metallurgy , organic chemistry , optoelectronics , engineering
Noble metal free catalysts with high catalytic activity and excellent durability have long been pursued as alternatives of noble metal catalysts for renewable energy technologies. Herein, a facile one‐step method is reported to prepare ultrasmall transition metal carbide nanoparticles encapsulated in N, S‐doped graphene as noble‐metal‐free electrocatalysts for all‐pH hydrogen evolution, in which, high‐density MoC x (≈2.8 nm) or WC x (≈2.0 nm) nanoparticles are encapsulated in porous N, S‐doped graphene matrix. Both catalysts exhibit excellent hydrogen evolution reaction catalytic activity and durability in a wide range of pH from 0 to 14.