Construction of Four ZnII Coordination Polymers Used as Catalysts for the Photodegradation of Organic Dyes in WaterReportar como inadecuado




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College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China





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Academic Editor: Félix Zamora

Abstract Hydrothermal reactions of ZnOAc2·2H2O with flexible bipyridyl benzene ligand and three dicarboxylic derivatives gave rise to four new coordination polymers, Zn7μ4-O2OAc10bpmbn 1, Zn5-OH-1,3-BDCbpmbn 2, Zn1,2-BDCbpmbn 3 and Zn2ADB2bpmbn 4 bpmb = 1,4-bispyridine-3-ylmethoxybenzene, 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 Zn7μ4-Oμ3-OAc2μ2-OAc8 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 Znbpmbn chain. Compound 4 comprises a 3D framework constructed by 2D wrinkled Zn2ADB4n 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





Autor: Lei-Lei Liu * , Cai-Xia Yu, Wei Zhou, Qi-Gui Zhang, Shi-Min Liu and Yun-Feng Shi *

Fuente: http://mdpi.com/



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