Synthesis of Two Coordination Polymer Photocatalysts and Significant Enhancement of Their Catalytic Photodegradation Activity by Doping with Co2+ Ions

The coordination polymers (CPs) [Zn2(tipm)(1,3‐BDC)2] (1) and [Co2(tipm)(1,3‐BDC)2]·0.5CH3CN (2·0.5CH3CN) were synthesized by the reactions of Zn(NO3)2 or Co(NO3)2 with tetrakis[4‐(1‐imidazolyl)phenyl]methane (tipm) and benzene‐1,3‐dicarboxylic acid (1,3‐H2BDC) under solvothermal conditions. Compoun...

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Bibliographic Details
Published in:European journal of inorganic chemistry 2015-04, Vol.2015 (11), p.1981-1988
Main Authors: Li, Duan-Xiu, Ren, Zhi-Gang, Young, David J., Lang, Jian-Ping
Format: Article
Language:English
Subjects:
Carboxylate ligands
Cobalt
Coordination polymers
Doping
N ligands
Photocatalysis
Zinc
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Summary:The coordination polymers (CPs) [Zn2(tipm)(1,3‐BDC)2] (1) and [Co2(tipm)(1,3‐BDC)2]·0.5CH3CN (2·0.5CH3CN) were synthesized by the reactions of Zn(NO3)2 or Co(NO3)2 with tetrakis[4‐(1‐imidazolyl)phenyl]methane (tipm) and benzene‐1,3‐dicarboxylic acid (1,3‐H2BDC) under solvothermal conditions. Compounds 1 and 2 are isostructural and possess complicated three‐dimensional frameworks with the Schläfli symbol (4·72)(62·73·12)(4·62·73). Cobalt ions were incorporated into the Zn‐based CP framework 1 during solvothermal crystallization to yield [Zn(2–2x)Co2x(tipm)(1,3‐BDC)2]·bH2O (x = 2.4 %, b = 0 for 1a, x = 23 %, b = 1 for 2a·H2O). Doped CPs 1a and 2a·H2O exhibited greater catalytic photodegradation of the dye rhodamine B (RhB) than the undoped complexes 1 and 2 and many literature examples. Two coordination polymers are prepared, and their catalytic activity for the photodegradation of rhodamine B (RhB) is enhanced by doping with Co2+ ions.
ISSN:1434-1948
1099-0682
DOI:10.1002/ejic.201500069