Recently, the State Key Laboratory of Catalysis of Dalian Institute of Chemical Physics, Chinese Academy of Sciences has made new progress in the study of graphene limited-domain catalysis and surface catalysis in situ characterization. Using laboratory-developed light-emitting electron microscopy/low-energy electron microscopy (PEEM/LEEM) and related scientific installations from Berkeley National Laboratories and Texas A&M University, Yao Yunxi, Fu Qiang, and Bao Xinhe, etc. Based on the full understanding of the weak interaction between graphene and metal (Angew Chem Int Ed 2012, 51, 4856), it is innovatively proposed to use a two-dimensional space formed between graphene and a metal surface as a nanoreactor and carry out Surface Catalytic Reaction of Graphene Confined Region.
The results show that CO, O2 and other molecules can rapidly intercalate into the graphene-metal interface under near-atmospheric conditions. This unique electronic environment in the limited space formed by the graphene layer and the metal surface reduces the CO oxidation reaction. Activation energy makes the catalytic reaction rate significantly faster. The results were recently published in the Proceedings of the National Academy of Sciences (PNAS 2014, 111 (48) p17023-17028).
The control of the catalytic activity of the metal surface in heterogeneous catalysis is usually achieved by introducing surface alloys on the surface of the metal or by introducing subsurface elements underneath the surface. In this achievement, it is proposed to coat a graphene structure on the metal surface and use the limited area of â€‹â€‹the graphene. The effect affects the surface catalytic reaction, which provides a new way for the control of catalytic activity of the metal surface.
Related research has been supported by the National Natural Science Foundation of China, the Ministry of Science and Technology, the Chinese Academy of Sciences, and the Ministry of Finance.
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