Carbon-CeO interface confinement enhances the chemical stability of Pt nanocatalyst for catalytic oxidation reactions
作者机构：Key Lab for Anisotropy and Texture of Materials(MoE)School of Materials Science and EngineeringNortheastern UniversityShenyang110819China Institute of Microscale Optoelectronics(IMO)Shenzhen UniversityShenzhen518060China Beijing National Laboratory for Molecular SciencesState Key Laboratory of Rare Earth Materials Chemistry and ApplicationsPKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic ChemistryPeking UniversityBeijing100871China Research Center for Metallic WiresNortheastern UniversityShenyang110819China
基 金：supported by the National Key Research and Development Program of China(2016YFB0701100) the National Natural Science Foundation of China(51771047,51525101 and 51971059) the Fundamental Research Funds for the Central Universities(N180204014)
出 版 物：《Science China Materials》 (中国科学（材料科学（英文版）)
年 卷 期：2021年第64卷第1期
页 码：128-136页
摘 要：Noble metals are downsized to nano-/subnanoscale to improve their catalytic activity and ***,the stabilities in chemical state and catalytic performance of these nanocatalysts often suffer during harsh *** Pt nanoparticles(NPs)supported on CeO2,activated oxygen diffused from the support over-stabilizes the active sites of Pt,degrading its performance at mild *** this work,Pt nanocatalysts with unique structure of triple-junction are synthesized by selectively growing Pt NPs on the carbon-CeO2 ***,the Pt NPs exhibit much enhanced catalytic stability and high activity for CO oxidation at mild *** enhancement is attributed to electron donation from graphitized carbon and the confinement effect from the high-density nanopores of the CeO2 *** triple-junction of Pt-C-CeO2,combining the merits of CeO2 for activating O2 and electron donating capability of carbon,provides new inspiration to the fabrication of high-performance nanocatalysts.
主 题 词：catalyst stability Pt nanocatalyst interface confinement
学科分类：081705[081705] 08[工学] 0817[工学-轻工类]
核心收录：
D O I：10.1007/s40843-020-1360-8
馆 藏 号：203981879...
