Chem. J. Chinese Universities ›› 2022, Vol. 43 ›› Issue (9): 20220349.doi: 10.7503/cjcu20220349

• Article • Previous Articles     Next Articles

Integration of Atomically Dispersed Ga Sites with C3N4 Nanosheets for Efficient Photo-driven CO2 Cycloaddition

YANG Jingyi1, SHI Siqi1, PENG Huaitao2, YANG Qihao2(), CHEN Liang2()   

  1. 1.School of Material Science and Engineering,Shanghai University,Shanghai 200444,China
    2.Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China
  • Received:2022-05-17 Online:2022-09-10 Published:2022-07-18
  • Contact: YANG Qihao,CHEN Liang E-mail:yangqihao@nimte.ac.cn;chenliang@nimte.ac.cn
  • Supported by:
    the Zhejiang Provincial Natural Science Foundation, China(LQ22B010005);the Ningbo Natural Science Foundation, China(2021J202)

Abstract:

A carbon nitride(C3N4)-based catalyst featuring high density of atomically dispersed Ga species(mass fraction of 8.42%) was rationally fabricated(Ga-C3N4) based on a molecule-confined strategy for photo-driven cycloaddition of CO2 and epoxides. The atomically dispersed Ga sites and uniform N species in Ga-C3N4 served as Lewis acid and Lewis base sites, respectively, cooperating together to promote the activation of substrates. Compared with the thermal-driven catalytic system, the light irradiation favors the photo-generated electron transfer from catalyst(i.e., Ga-C3N4) to epoxides, facilitating the catalytic efficiency of ring-opening step(i.e., rate-limiting step). As a result, Ga-C3N4 exhibited superior catalytic performance towards the CO2 cycloaddition with epoxides under light irradiation.

Key words: Single atom catalysis, Photo-driven, CO2 cycloaddition

CLC Number: 

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