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Synergism of Interface and Electronic Effects: Bifunctional N‐Doped Ni 3 S 2 /N‐Doped MoS 2 Hetero‐Nanowires for Efficient Electrocatalytic Overall Water Splitting
Author(s) -
Xu You,
Chai Xingjie,
Ren Tianlun,
Yu Hongjie,
Yin Shuli,
Wang Ziqiang,
Li Xiaonian,
Wang Liang,
Wang Hongjing
Publication year - 2019
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201903628
Subject(s) - bifunctional , doping , nanowire , water splitting , materials science , interface (matter) , nanotechnology , optoelectronics , inorganic chemistry , chemistry , catalysis , photocatalysis , biochemistry , capillary number , capillary action , composite material
The realization of water electrolysis on the basis of highly active, cost‐effective electrocatalysts is significant yet challenging for achieving sustainable hydrogen production from water. Herein, N‐doped Ni 3 S 2 /N‐doped MoS 2 1D hetero‐nanowires supported by Ni foam (N‐Ni 3 S 2 /N‐MoS 2 /NF) are readily synthesized through a chemical transformation strategy by using NiMoO 4 nanowire array growth on Ni foam (NiMoO 4 /NF) as the starting material. With the in situ generation of Ni 3 S 2 /MoS 2 heterointerfaces within nanowires and the incorporation of N − anions, an extraordinary hydrophilic nature with abundant, well‐exposed active sites and optimal reaction dynamics for both oxidation and reduction of water are obtained. Attributed to these properties, as‐converted N‐Ni 3 S 2 /N‐MoS 2 /NF exhibits highly efficient electrocatalytic activities for both hydrogen and oxygen evolution reactions under alkaline conditions. The superior bifunctional properties of N‐Ni 3 S 2 /N‐MoS 2 /NF enable it to effectively catalyze the overall water‐splitting reaction.