Atomic-Scale Probing the Priority of Oxidation Sites of an Organic Molecule Adsorbed at the Cu[BOND]O/Cu(1 1 0) Interface

Authors

  • Kai Sheng,

    1. College of Materials Science and Engineering, Key Laboratory for Advanced Civil Engineering Materials (Ministry of Education), Tongji University, Caoan Road 4800, Shanghai 201804 (P.R. China), Fax: (+86) 21-69582148
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  • Huihui Kong,

    1. College of Materials Science and Engineering, Key Laboratory for Advanced Civil Engineering Materials (Ministry of Education), Tongji University, Caoan Road 4800, Shanghai 201804 (P.R. China), Fax: (+86) 21-69582148
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  • Zhiwen Li,

    1. School of Materials Science and Engineering, Shanghai Key Laboratory of Advanced Polymeric Materials, East China University of Science and Technology, Meilong Road 130, Shanghai 200237 (P.R. China)
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  • Chi Zhang,

    1. College of Materials Science and Engineering, Key Laboratory for Advanced Civil Engineering Materials (Ministry of Education), Tongji University, Caoan Road 4800, Shanghai 201804 (P.R. China), Fax: (+86) 21-69582148
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  • Qiang Sun,

    1. College of Materials Science and Engineering, Key Laboratory for Advanced Civil Engineering Materials (Ministry of Education), Tongji University, Caoan Road 4800, Shanghai 201804 (P.R. China), Fax: (+86) 21-69582148
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  • Dr. Qinggang Tan,

    1. College of Materials Science and Engineering, Key Laboratory for Advanced Civil Engineering Materials (Ministry of Education), Tongji University, Caoan Road 4800, Shanghai 201804 (P.R. China), Fax: (+86) 21-69582148
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  • Dr. Yunxiang Pan,

    1. College of Materials Science and Engineering, Key Laboratory for Advanced Civil Engineering Materials (Ministry of Education), Tongji University, Caoan Road 4800, Shanghai 201804 (P.R. China), Fax: (+86) 21-69582148
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  • Prof. Dr. Aiguo Hu,

    Corresponding author
    1. School of Materials Science and Engineering, Shanghai Key Laboratory of Advanced Polymeric Materials, East China University of Science and Technology, Meilong Road 130, Shanghai 200237 (P.R. China)
    • School of Materials Science and Engineering, Shanghai Key Laboratory of Advanced Polymeric Materials, East China University of Science and Technology, Meilong Road 130, Shanghai 200237 (P.R. China)
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  • Prof. Dr. Wei Xu

    Corresponding author
    1. College of Materials Science and Engineering, Key Laboratory for Advanced Civil Engineering Materials (Ministry of Education), Tongji University, Caoan Road 4800, Shanghai 201804 (P.R. China), Fax: (+86) 21-69582148
    • College of Materials Science and Engineering, Key Laboratory for Advanced Civil Engineering Materials (Ministry of Education), Tongji University, Caoan Road 4800, Shanghai 201804 (P.R. China), Fax: (+86) 21-69582148
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Abstract

Catalytic reactions occurring on oxide-supported Cu and Cu-supported oxide catalysts are of fundamental interest in both industrial and scientific fields. Though the interface between Cu and oxide species has been regarded as the reaction site, the exact role of the interface in the catalytic reactions is not fully understood yet. In this work, by using a model system including Cu[BOND]O chains supported on Cu(1 1 0) and an organic molecule with alkynyl and aldehyde groups, we attempted to obtain a fundamental understanding of the role of the interface in the catalytic reactions. A combination of high-resolution scanning tunneling microscopy imaging and density functional theory calculations provided direct evidence at the atomic scale that the interface between the Cu[BOND]O chains and the Cu(1 1 0) surface is the most favorable site for the adsorption and activation of organic molecules, and the oxygen of Cu[BOND]O has an activity to oxidize both the alkynyl and aldehyde groups of the molecules adsorbed at the interface.

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