Abstract
A new Keggin-type POMs based Cu-bib (bib = 1,4-bis(imidazol-1-ylmethyl)benzene) coordination polymer with appropriate surface areas and rich active sites, [Cu(bib)][H3PW12O40]·(Hbib)2·2H2O (Cu(bib)PW12), was successfully synthesized and structurally characterized. To improve the photocatalytic activity of Cu(bib)PW12, polypyrrole (PPy) was loaded on its surface through a facile in situ oxidation polymerization process. Under the irradiation of visible light, the composites (Cu(bib)PW12/PPy (A and B) exhibited excellent photocatalytic activities for the degradation of methylene blue than pure Cu(bib)PW12 crystal, PPy and their mechanically mixing (Cu(bib)PW12/PPy (A′ and B′), respectively. Catalytic mechanism study indicates that the enhancement of photocatalytic activities of Cu(bib)PW12/PPy can be attributed to the higher separation efficiency of the photogenerated electron–hole pair on the interface of PPy and Cu(bib)PW12. These results suggest that loading PPy onto the surface of POMCPs would be a feasible strategy to enhance the photocatalytic activity of POMCPs.
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Financial support from students’ research and innovative experiment program of Jining University in CX 201838, CX201829, CX201815.
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Kong, F., Li, S., Liu, C. et al. Synergistic Effect of POMCPs and PPy for Enhancing Visible-Light Photocatalytic Activity and High Quantum Yields. J Clust Sci 30, 553–559 (2019). https://doi.org/10.1007/s10876-019-01506-x
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DOI: https://doi.org/10.1007/s10876-019-01506-x