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Studies on Photocatalytic CO2 Reduction over NH2-Uio-66(Zr) and Its Derivatives: Towards a Better Understanding of Photocatalysis on Metal–Organic Frameworks

Authors

  • Dengrong Sun,

    1. Research Institute of Photocatalysis, Fujian Provincial Key Laboratory of Photocatalysis, State Key Laboratory Breeding Base, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002 (P. R. China)
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  • Dr. Yanghe Fu,

    1. Research Institute of Photocatalysis, Fujian Provincial Key Laboratory of Photocatalysis, State Key Laboratory Breeding Base, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002 (P. R. China)
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  • Wenjun Liu,

    1. Research Institute of Photocatalysis, Fujian Provincial Key Laboratory of Photocatalysis, State Key Laboratory Breeding Base, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002 (P. R. China)
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  • Lin Ye,

    1. Research Institute of Photocatalysis, Fujian Provincial Key Laboratory of Photocatalysis, State Key Laboratory Breeding Base, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002 (P. R. China)
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  • Dengke Wang,

    1. Research Institute of Photocatalysis, Fujian Provincial Key Laboratory of Photocatalysis, State Key Laboratory Breeding Base, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002 (P. R. China)
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  • Lin Yang,

    1. Research Institute of Photocatalysis, Fujian Provincial Key Laboratory of Photocatalysis, State Key Laboratory Breeding Base, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002 (P. R. China)
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  • Prof. Dr. Xianzhi Fu,

    1. Research Institute of Photocatalysis, Fujian Provincial Key Laboratory of Photocatalysis, State Key Laboratory Breeding Base, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002 (P. R. China)
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  • Prof. Dr. Zhaohui Li

    Corresponding author
    1. Research Institute of Photocatalysis, Fujian Provincial Key Laboratory of Photocatalysis, State Key Laboratory Breeding Base, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002 (P. R. China)
    • Research Institute of Photocatalysis, Fujian Provincial Key Laboratory of Photocatalysis, State Key Laboratory Breeding Base, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002 (P. R. China)

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Abstract

Metal–organic framework (MOF) NH2-Uio-66(Zr) exhibits photocatalytic activity for CO2 reduction in the presence of triethanolamine as sacrificial agent under visible-light irradiation. Photoinduced electron transfer from the excited 2-aminoterephthalate (ATA) to Zr oxo clusters in NH2-Uio-66(Zr) was for the first time revealed by photoluminescence studies. Generation of ZrIII and its involvement in photocatalytic CO2 reduction was confirmed by ESR analysis. Moreover, NH2-Uio-66(Zr) with mixed ATA and 2,5-diaminoterephthalate (DTA) ligands was prepared and shown to exhibit higher performance for photocatalytic CO2 reduction due to its enhanced light adsorption and increased adsorption of CO2. This study provides a better understanding of photocatalytic CO2 reduction over MOF-based photocatalysts and also demonstrates the great potential of using MOFs as highly stable, molecularly tunable, and recyclable photocatalysts in CO2 reduction.

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