Metal-organic framework-derived Co nanoparticles and single atoms as efficient electrocatalyst for pH universal hydrogen evolution reaction
作者机构：School of Optical and Electronic InformationHuazhong University of Science and Technology(HUST)Wuhan 430074China Department of ChemistryTsinghua UniversityBeijing 100084China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2022年第15卷第9期
页 面：7917-7924页
核心收录：
学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学]
基 金：the National Key Research and Development Program of China(No.2017YFB0403401) the China Postdoctoral Science Foundation(Nos.2021M691759,and 2021TQ0169) Beijing Natural Science Foundation(No.2224103)
主 题：metal-organic frameworks hydrogen evolution reaction nanocatalysts single atoms pH universal
摘 要：Hydrogen release through water splitting is essential for reducing carbon emissions and promoting the hydrogen *** of the crucial challenges for industrial applications of water electrolysis is the manufacture of electrocatalysts which can reduce the kinetic energy barrier of the hydrogen evolution reaction(HER).Loading transition metal(TM)nanoparticles(NPs)or single atoms(SAs)into heteroatom-doped carbon materials(HCMs)is an effective method to improve electrochemical activity and *** this end,we synthesized N-doped porous carbon(NC)encapsulated Co NPs and isolated Co SA nanocatalysts(denoted as Co NPs@SAs-NC)using metal-organic frameworks(MOFs)as sacrificial *** Co NPs@SAs-NC nanocatalysts displayed outstanding HER activity with a 110 mV overpotential in 1 M KOH,47 mV overpotential in 0.5 M H2SO4 and 171 mV in 0.5 M phosphate-buffered saline(PBS)to reach a current density of 10 mA·cm^(−2).In addition,the mechanism of the synergistic effect of Co NPs,Co SAs and N species was investigated in-depth using in situ shielding experiments and density functional theory(DFT)calculations.
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