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Issue 23, 2018
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Interface engineering of Ru–Co3O4 nanocomposites for enhancing CO oxidation

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Abstract

The interfacial structure plays an important role in heterogeneous catalysis due to its unique electronic structure. However, the design of interfacial structures with high activity remains a challenge because the fundamental nature of the active catalytic sites and the details of the reaction mechanism are still hotly debated. Herein, we combine experiment and density functional theory calculations to reveal the catalytic mechanism for the oxidation of CO by constructing a Ru–Co3O4 interface. Experimental results show that CO oxidation can be significantly enhanced at the interface. Density functional theory calculations indicate that this enhancement is attributed to the charge transfer from ruthenium to Co3O4. As a result, O2 is facilely activated by ruthenium with adjacent Co at the interface, hence lowering the activation energy and boosting the catalytic performance of CO oxidation. This study provides a new way to design and develop efficient catalysts by engineering an appropriate interface.

Graphical abstract: Interface engineering of Ru–Co3O4 nanocomposites for enhancing CO oxidation

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Publication details

The article was received on 30 Jan 2018, accepted on 15 May 2018 and first published on 16 May 2018


Article type: Paper
DOI: 10.1039/C8TA00994E
Citation: J. Mater. Chem. A, 2018,6, 11037-11043
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    Interface engineering of Ru–Co3O4 nanocomposites for enhancing CO oxidation

    C. Wang, S. Liu, D. Wang and Q. Chen, J. Mater. Chem. A, 2018, 6, 11037
    DOI: 10.1039/C8TA00994E

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