Atomically Dispersed Pt-Ru Dual-Atom Catalysts for Efficient Low-Temperature CO Oxidation ReactionOA
Single-atom catalysts(SACs)have demonstrated excellent performance in heterogeneous catalytic reactions owing to their maximized atomic efficiency,distinctive geometric,and electronic configurations.However,the efficacy of SACs remains limited for certain reactions requiring simultaneous activation of multiple reactants over metallic active sites.Herein,we report an atomically dispersed Pt1Ru1 dual-atom pair site anchored on nanodiamond@graphene(ND@G)for CO oxidation.The Pt1Ru1 dual-atom catalyst shows an exceptional turnover frequency(TOF)of 17.6.10^(-2)s^(-1)at significantly lower temperature(30℃),achieving a tenfold increase in TOF compared to singleatom Pt1/ND@G catalyst(1.5.10^(-2)s^(-1))and surpassing to previously reported Pt-based catalysts under similar conditions.Moreover,the catalyst demonstrates excellent stability,maintaining its activity for 40 h at 80℃without significant deactivation.The superior catalytic performance of Pt-Ru dual-atom catalysts is attributed to the synergistic effect between Pt and Ru atoms with enhanced metallicity for improving simultaneous adsorption and activation of CO and O_(2),and the tuning of conventional competitive reactant adsorption into a non-competitive pathway over dual-atom pair sites.The present work manifests the advantages of dual-atom pair sites in heterogeneous catalysis and paves the way for precise design of catalysts at the atomic scale.
Yanan Qi;Hongqiu Chen;Feng Hong;Xiangbin Cai;Zhehan Ying;Jiangyong Diao;Zhimin Jia;Jiawei Chen;Ning Wang;Shengling Xiang;Xiaowen Chen;Guodong Wen;Bo Sun;Geng Sun;Hongyang Liu
School of Materials Science and Engineering,University of Scienceand Technology of China,Shenyang 110016,People’s Republic of China Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,People’s Republic of ChinaChongqing Key Laboratory of Chemical Theory and Mechanism,School of Chemistry and Chemical Engineering,Chongqing University,Chongqing 401331,People’s Republic of ChinaSchool of Materials Science and Engineering,University of Scienceand Technology of China,Shenyang 110016,People’s Republic of China Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,People’s Republic of ChinaDivision of Physics and Applied Physics,School of Physical and Mathematical Sciences,Nanyang Technological University,Singapore 637371,SingaporeMaterials Characterization and Preparation Facility(GZ),The Hong Kong University of Science and Technology(Guangzhou),Guangzhou,People’s Republic of ChinaSchool of Materials Science and Engineering,University of Scienceand Technology of China,Shenyang 110016,People’s Republic of China Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,People’s Republic of ChinaSchool of Materials Science and Engineering,University of Scienceand Technology of China,Shenyang 110016,People’s Republic of China Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,People’s Republic of ChinaSchool of Materials Science and Engineering,University of Scienceand Technology of China,Shenyang 110016,People’s Republic of China Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,People’s Republic of ChinaDepartment of Physics and Center for Quantum Materials,Hong Kong University of Science and Technology,Kowloon,Hong Kong SAR 999077,People’s Republic of ChinaDepartment of Physics and Center for Quantum Materials,Hong Kong University of Science and Technology,Kowloon,Hong Kong SAR 999077,People’s Republic of ChinaSchool of Materials Science and Engineering,University of Scienceand Technology of China,Shenyang 110016,People’s Republic of China Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,People’s Republic of ChinaSchool of Materials Science and Engineering,University of Scienceand Technology of China,Shenyang 110016,People’s Republic of China Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,People’s Republic of ChinaSchool of Materials Science and Engineering,University of Scienceand Technology of China,Shenyang 110016,People’s Republic of China Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,People’s Republic of ChinaChongqing Key Laboratory of Chemical Theory and Mechanism,School of Chemistry and Chemical Engineering,Chongqing University,Chongqing 401331,People’s Republic of ChinaSchool of Materials Science and Engineering,University of Scienceand Technology of China,Shenyang 110016,People’s Republic of China Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,People’s Republic of China
化学化工
CO oxidationAtomically dispersedDual-atom catalystsPt-RuSynergistic effect
《Nano-Micro Letters》 2026 (5)
P.816-830,15
supported by the National Key R&D Program of China(2021YFA1502802)the National Natural Science Foundation of China(U21B2092,22202213,22402210,22502215,22502214,22572200,and 22579171)the International Partnership Program of Chinese Academy of Sciences(172GJHZ2022028MI)the Shenyang Bureau of Science and Technology(24-213-3-25)the Natural Science Foundation of Liaoning Province(2025BS0153)Zhongke Technology Achievement Transfer and Transformation Center of Henan Province 2025119The XAS experiments were conducted in Beijing Synchrotron Radiation Facility(BSRF)and Shanghai Synchrotron Radiation Facility(SSRF).
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