Engineering single atomic ruthenium on defective nickel vanadium layered double hydroxide for highly efficient hydrogen evolution
作者机构：College of Materials Science and EngineeringShenzhen UniversityShenzhen 518071China College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China Department of Physical ChemistrySchool of Metallurgical and Ecological EngineeringUniversity of Science and Technology Beijing InstitutionBeijing 100083China State Key Laboratory of Biochemical EngineeringInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing 100190China Beijing National Center for Electron Microscopy and Laboratory of Advanced MaterialsDepartment of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Beijing Synchrotron Radiation FacilityInstitute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Key Laboratory of Advanced Material Processing&MoldMinistry of EducationZhengzhou UniversityZhengzhou 450002China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2023年第16卷第4期
页 面：4612-4619页
核心收录：
学科分类：07[理学] 070304[理学-物理化学(含∶化学物理)] 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：supported by the National Natural Science Foundation of China(Nos.51932001,51872024,52022097,and 22022508) the National Key Research and Development Program of China(No.2018YFA0703503) the Foundation of the Youth Innovation Promotion Association of the Chinese Academy of Sciences(No.2020048) China Postdoctoral Science Foundation(No.2022M712167).
主 题：hydrogen evolution reaction layered double hydroxide ruthenium atomic site ultrathin nanoribbons
摘 要：Fabricating single-atom catalysts(SACs)with high catalytic activity as well as great stability is a big challenge.Herein,we propose a precise synthesis strategy to stabilize single atomic ruthenium through regulating vanadium defects of nickel vanadium layered double hydroxides(NiV-LDH)ultrathin nanoribbons support.Correspondingly,the isolated atomically Ru doped NiV-LDH ultrathin nanoribbons(NiVRu-R)were successfully fabricated with a super-high Ru load of 12.8 wt.%.X-ray absorption spectrum(XAS)characterization further confirmed atomic dispersion of Ru.As catalysts for electrocatalytic hydrogen evolution reaction(HER)in alkaline media,the NiVRu-R demonstrated superior catalytic properties to the commercial Pt/C.Moreover,it maintained exceptional stability even after 5,000 cyclic voltammetry cycles.In-situ XAS and density functional theory(DFT)calculations prove that the Ru atomic sites are stabilized on supports through forming the Ru-O-V structure,which also help promote the catalytic properties through reducing the energy barrier on atomic Ru catalytic sites.
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