Journal
SCIENCE BULLETIN
Volume 64, Issue 13, Pages 926-933Publisher
ELSEVIER
DOI: 10.1016/j.scib.2019.05.012
Keywords
Cu(II) tetra(4-carboxylphenyl)porphyrin (CuTCPP); Metal-organic frameworks; Photocatalytic CO2 reduction; TiO2
Categories
Funding
- National Natural Science Foundation of China [21663027, 21808189]
- Science and Technology Support Project of Gansu Province [1504GKCA027]
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As one of the highly effective methods to prepare catalysts for photocatalytic reduction of CO2 into value-added chemicals, using metalloporphyrin as light-harvesting mixed ligand to modify metal-organic framework (MOF) is very valuable since it can greatly improve the prophyrin dispersibility and consequently inhibit its potential agglomeration. Herein, we employed a one-pot synthetic strategy to chemically immobilize Cu(II) tetra(4-carboxylphenyl)porphyrin (CuTCPP) into UiO-66 MOF structure through coordination mode. Meanwhile, in-situ growth of TiO2 nanoparticles onto the MOF is actualized with the generation of CuTCPP subset of UiO-66/TiO2 (CTU/TiO2) composites. Under Xe lamp irradiation (lambda > 300 nm), the catalytic result presents that an optimal value of 31.32 mu mol g (1) h (1) CO evolution amount, about 7 times higher than that of pure TiO2 was obtained through the photocatalysis. It is supposed owning to a consistent augment of light absorption derived from chemically implanted porphyrin derivative, which is simultaneously functioning with an efficacious separation of photo-induced carries given by the newly engendered composites between MOF and TiO2, an effective catalytic activity and approving recyclability of CTU/TiO2 can be achieved in the photocatalytic reduction of CO2 into CO. (C) 2019 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved.
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