Angelw: Li Jianfeng, Professor of Xiamen University, has made progress in the field of electrochemical in situ Raman study of surface and interface electronic structure and catalytic process

Professor Li Jianfeng's research group of School of chemistry and chemical engineering of Xiamen University has made important progress in the field of in-situ Raman spectroscopic analysis of electronic structure and catalytic process of surface interface Relevant research results "probing interface electronic and catalytic properties onwell defined surfaces using in situ Raman spectrum" are published in angel Chem Int ed (DOI: 10.1002/anie.201805464 ）。
The surface and interface structure of heterogeneous catalysts determine their catalytic performance It is of great significance and challenging to design and synthesize high efficiency catalysts by constructing clear surface structure and characterizing the surface structure and process at the atomic and molecular level with the help of in-situ spectroscopy In this work, Pd / Au and Pt / Au heterostructures with different layers were constructed on the surface of Au (111), Au (100) and Au (110) model single crystals with definite surface state and electronic structure The electronic structure of the bimetal model interface was analyzed in detail with isocyanobenzene as probe molecule and the advantages of shiners technology Furthermore, the electrocatalytic oxidation process of bimetallic Pt / Au, Pd / Au and bimetallic Pt / Pd / Au model interfaces was monitored in situ by using in-situ electrochemical shiners technique It is found that the electron deficient surface of Pt and PD is beneficial to weaken the effects of Pt-C and Pd-C, thus weakening the toxic effect of CO and significantly improving the catalytic performance This work shows that shiners can be used as an important new method to analyze the electronic structure of the surface and interface, and provide direct evidence for revealing the reaction mechanism The first author of this work is Wang Yahao, a 2015 level doctoral student in the school of chemistry and chemical engineering of Xiamen University, and Liang Miaomiao, Zhang Yuejiao, etc assisted in the completion of part of the synthesis work Physical calculation was completed by Dr Chen Shu and Prof Yang Zhilin, Department of physics The research work was supported by NSFC's Excellent Youth Science Foundation and the youth thousand talents program of the central organization department.