新型炭材料（中英文）2023，Vol.38Issue(6)：1059-1069,11.DOI:10.1016/S1872-5805(23)60782-6
碳纳米管表面Co/MoSe2莫特-肖特基异质结的构筑及高效析氢性能
Mott-Schottky heterojunction formation between Co and MoSe2 on carbon nanotubes for superior hydrogen evolution
摘要
Abstract
Molybdenum selenide(MoSe2)has been regarded as an advanced electrocatalyst for the hydrogen evolution reaction(HER).However,its electrocatalytic performance is far inferior to platinum(Pt).Combining semiconductors with metals to con-struct Mott-Schottky heterojunctions has been considered as an effective method to enhance HER activity.In this work,we report a typical Mott-Schottky heterojunction composed of metal Co and semiconductor MoSe2 on carbon nanotubes(Co/MoSe2@CNT),pre-pared by a sol-gel process followed by thermal reduction.The characterization and theoretical calculations show that a Co/MoSe2 Mott-Schottky heterojunction can cause electron redistribution at the interface and form a built-in electric field,which not only op-timizes the free energy of hydrogen atom adsorption,but also improves the charge transfer efficiency during hydrogen evolution.Thus,the Co/MoSe2@CNT has excellent catalytic activity with a low overpotential of 185 mV at 10 mA cm-2 and a small Tafel slope of 69 mV dec-1.This work provides a new strategy for constructing Co/MoSe2 Mott-Schottky heterojunctions and highlights the Mott-Schottky effect,which may inspire the future development of more attractive Mott-Schottky electrocatalysts for H2 production.关键词
二硒化钼/钴纳米粒子/莫特-肖特基异质结/析氢反应Key words
MoSe2/Co nanoparticles/Mott-Schottky heterojunction/Hydrogen evolution reaction分类
化学化工引用本文复制引用
任先培,胡启威,凌芳,吴飞,李强,庞柳青..碳纳米管表面Co/MoSe2莫特-肖特基异质结的构筑及高效析氢性能[J].新型炭材料（中英文）,2023,38(6):1059-1069,11.基金项目
This work was supported by the Sichuan Natural Science Foundation Project(22NSFSC0335)and the fund of the State Key Laboratory of Catalysis in DICP(N-22-14). 四川省自然科学基金项目(22NSFSC0335) （22NSFSC0335）
DICP催化国家重点实验室项目(N-22-14). （N-22-14）
