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Synthesis of Ultrathin and Grid‐Structural Carbon Nanosheets Coupled with Mo 2 C for Electrocatalytic Hydrogen Production
Author(s) -
Du Qianqian,
Zhao Ruihua,
Chen Xiaojun,
Liu Lu,
Zhang Shaoyang,
Guo Tianyu,
Du Jianping,
Li Jinping
Publication year - 2021
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.202100512
Subject(s) - materials science , catalysis , electrolyte , electrochemistry , nanoparticle , chemical engineering , hydrogen production , graphene , carbonization , nanotechnology , carbide , dispersity , carbon fibers , hydrogen , molybdenum , electrode , chemistry , composite number , composite material , organic chemistry , metallurgy , polymer chemistry , scanning electron microscope , engineering
Molybdenum carbide possessing a Pt‐like d‐band electronic structure is considered as one of potential candidates of electrocatalysts and it shows intrinsic catalytic property. However, a high carbonizing temperature easily leads to the coalescence of nanoparticles (NPs). Here, we propose a simple sol‐gel route to achieve high dispersity of carbide NPs by designing a Mo‐involved xerogel. The results show that molybdenum carbide NPs are dispersed and anchored on the nitrogen‐doped carbon nanosheets (Mo 2 C@NC). Ultrathin carbon layers resemble graphene and the network structures act as a support of carbide NPs, which can hinder NPs’ coalescence effectively. Nanpoparticles cross‐coupled on network‐structure nanosheets display the grid shapes. Electrochemical studies indicate that Mo 2 C@NC material exhibits outstanding hydrogen evolution performance in alkaline electrolyte.