Research Progress

Prof. Wang Jingyu's Research Group Made New Progress in Photocatalytic CO2 Reduction

Author:  Time:2022-04-20 10:06:25  Click:

On March 17, the research group led by Prof. Wang Jingyu published an online paper entitled "Selective photocatalytic CO2 reduction in aerobic environment by microporous Pd-porphyrin-based polymers coated hollow TiO2" on Nature Communications. The first author is PhD student Ma Yajuan, and the corresponding author is Prof. Wang Jingyu. Co-authors are Prof. Zhu Huaiyong and Prof. Eric R. Waclawikfrom Queensland University of Technology, Prof. Chen Chuncheng from Institute of Chemistry of Chinese Academy of Sciences, Prof. Li Tao, Prof. Tan Bien and Prof. Tetsuro Majima from Huazhong University of Science and Technology, and Prof. Wang Shaolei from Northeast Normal University.


Direct photocatalytic CO2 reduction from primary sources, such as flue gas and air, into fuels, is highly desired, but the thermodynamically favored O2 reduction almost completely impedes this process. Herein, we report on the efficacy of a composite photocatalyst prepared by hyper-crosslinking porphyrin-based polymers on hollow TiO2 surface and subsequent coordinating with Pd(II). Such composite exhibits high resistance against O2 inhibition, leading to 12% conversion yield of CO2 from air after 2-h UV-visible light irradiation. In contrast, the CO2 reduction over Pd/TiO2 without the polymer is severely inhibited by the presence of O2 ( ≥ 0.2 %). This study presents a feasible strategy, building Pd(II) sites into CO2-adsorptive polymers on hollow TiO2 surface, for realizing CO2 reduction with H2O in an aerobic environment by the high CO2/O2 adsorption selectivity of polymers and efficient charge separation for CO2 reduction and H2O oxidation on Pd(II) sites and hollow TiO2, respectively.

   


Link to this paper: https://doi.org/10.1038/s41467-022-29102-0





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