Professor Tan bin and Associate Professor Wang Jingyu of Huazhong University of science and technology have made new progress in visible light driven carbon dioxide conversion of inorganic organic polymer hybrid materials

Professor Tan bin and Associate Professor Wang Jingyu of Huazhong University of science and technology have made new progress in the study of visible light driven carbon dioxide conversion of inorganic organic polymer hybrid materials The research results were published in nature communications (DOI: 10.1038 / s41467-019-08651-x) under the title of "porus hypercrosslinked polymer-tio2-graph composite photocatalysts for visible light driven CO 2 conversion" Wang shaolei, a postdoctoral student of the school of chemistry and chemical engineering of Huazhong University of science and technology, and Xu Min, a 2015 level master student, are the co authors of the paper Professor Tan bin and Associate Professor Wang Jingyu are the co authors of the paper Huazhong University of science and technology is the only communication unit The authors also include Professor Li Tao from the school of chemistry and chemical engineering, Zhang Chengxin, a doctoral student in 2014, Professor Peng Tianyou from Wuhan University, and Professor Irshad Hussain from Lahore University of management science, Pakistan The strategy of using solar energy to simulate photosynthesis in nature and converting "greenhouse gas" CO 2 into chemical fuel by photocatalysis technology has attracted extensive attention of researchers In practical application, the low specific surface area of semiconductor photocatalyst and the lack of pores matching the adsorption of CO 2 lead to the weak adsorption of CO 2, which greatly limits the improvement of the reduction efficiency of material CO 2 Therefore, in order to make the photocatalyst achieve a higher activity of photoreduction of CO2, it is necessary for the material to have a higher amount of CO2 adsorption and a shorter diffusion distance from the adsorption site to the catalytic site Professor Tan bin and Associate Professor Wang Jingyu proposed a new idea of in-situ weaving organic porous polymer on the surface of semiconductor photocatalysis materials Taking the common photocatalysis material TiO 2-graphene as the research model, a layer of porous hypercrosslinked polymer with a thickness of 3-8 nm was grown in-situ on the surface of functional fossil graphene (Figure 1) The porous hypercrosslinked polymer obtained was -The surface area of hcp-tio2-fg is 988 M2 · g-1, which has a high CO2 adsorption capacity and a short diffusion distance from the adsorption site to the catalytic site, which is conducive to the adsorption of CO2 molecules and enrichment on the surface of TiO2 photocatalyst in the polymer network for catalytic conversion In addition, the porous hypercrosslinked polymer layer has a wide light absorption range, which promotes the light absorption range of the composite to be extended to the visible light range All these factors promote hcp-tio2-fg catalyst to realize the efficient reduction of CO2 in the gas-solid system without the presence of metal catalysts and sacrificial agents The electron selectivity of CH4 is as high as 83.7% The photocatalytic CO 2 conversion efficiency of this study is the highest in recent years This work has been supported by NSFC, istcp, independent innovation fund of Huazhong University of science and technology, interdisciplinary key project, Doctoral Fund and basic scientific research business fees of Central University.