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Polymers 2016, 8(1), 3; doi:10.3390/polym8010003

Construction of Four Zn(II) Coordination Polymers Used as Catalysts for the Photodegradation of Organic Dyes in Water

College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
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Academic Editor: Félix Zamora
Received: 12 November 2015 / Revised: 17 December 2015 / Accepted: 21 December 2015 / Published: 6 January 2016
(This article belongs to the Special Issue Coordination Polymers: New Materials for Multiple Applications)
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Abstract

Hydrothermal reactions of Zn(OAc)2·2H2O with flexible bipyridyl benzene ligand and three dicarboxylic derivatives gave rise to four new coordination polymers, [Zn74-O)2(OAc)10(bpmb)]n (1), [Zn(5-OH-1,3-BDC)(bpmb)]n (2), [Zn(1,2-BDC)(bpmb)]n (3) and [Zn2(ADB)2(bpmb)]n (4) (bpmb = 1,4-bis(pyridine-3-ylmethoxy)benzene, 5-OH-1,3-H2BDC = 5-hydroxy-1,3-benzenedicarboxylic acid, 1,2-H2BDC = 1,2-benzenedicarboxylic acid, H2ADB = 2,2’-azodibenzoic acid). Their structures were characterized by single-crystal X-ray diffraction, elemental analyses, IR spectra, powder X-ray diffraction (PXRD) and thermogravimetric analyses (TGA). Compound 1 features a one-dimensional (1D) chain structure based on the rare heptanuclear [Zn74-O)(μ3-OAc)22-OAc)8] units. Compound 2 exhibits a novel 2D bilayer structure built from the two parallel 2D (4,4) layers. Compound 3 holds a 2D structure in which the 1,2-BDC ligands work as lockers interlocking 1D [Zn(bpmb)]n chain. Compound 4 comprises a 3D framework constructed by 2D wrinkled [Zn2(ADB)4]n networks and bpmb linkers with a six-connected pcu net. These results suggest that the motifs of the dicarboxylic ligands have significant effect on the final structures. These compounds exhibited relatively good photocatalytic activity towards the degradation of methylene blue (MB) in aqueous solution under a Xe lamp irradiation. View Full-Text
Keywords: coordination polymers; photocatalytic properties; crystal structures; solvothermal reactions coordination polymers; photocatalytic properties; crystal structures; solvothermal reactions
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MDPI and ACS Style

Liu, L.-L.; Yu, C.-X.; Zhou, W.; Zhang, Q.-G.; Liu, S.-M.; Shi, Y.-F. Construction of Four Zn(II) Coordination Polymers Used as Catalysts for the Photodegradation of Organic Dyes in Water. Polymers 2016, 8, 3.

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