1,3-Bis(4′-carboxylatophenoxy)benzene and 3,5-bis(1-imidazoly)pyridine derived Zn(ii )/Cd(ii ) coordination polymers: synthesis, structure and photocatalytic properties
| Autor: | Lu Lu, Chuncheng Shi, Jun Wang, Abhinav Kumar, Qiang-Qiang Liu, Amita Singh, Qin Gong |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
Chemistry Hydrogen bond Supramolecular chemistry 02 engineering and technology General Chemistry Polymer 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Crystallography chemistry.chemical_compound Pyridine Photocatalysis General Materials Science 0210 nano-technology Benzene Photodegradation Single crystal |
| Zdroj: | CrystEngComm. 23:3981-3988 |
| ISSN: | 1466-8033 |
| DOI: | 10.1039/d1ce00498k |
| Popis: | Coordination polymers (CPs) have emerged as a peculiar category of multidimensional materials used as photocatalysts for assorted classes of lethal aromatic dyes. Herein, two new d10-configuration based coordination polymers with formula [Zn(L)(bip)·H2O] (1) and [Cd3(L)3(bip)2(H2O)2] (2) (H2L = 1,3-bis(4′-carboxylatophenoxy)benzene and bip = 3,5-bis(1-imidazoly)pyridine) have been reported and characterized using microanalyses, FTIR and single crystal X-ray diffraction. The X-ray analysis reveals that the Zn(II) based CP 1 has a 2D supramolecular framework built by hydrogen bonds as well as packing interactions between adjacent chains having a 3-nodal topology with a Schlafli notation of (4·84·12)(4)(8). Meanwhile, the Cd(II) based CP 2 exhibits a three-dimensional (3D) 2-fold interpenetrating network, having a 4,6-c net topology with a Schlafli notation of (44·610·8)(44·62). Both the materials have been used as photocatalysts for UV light assisted photodegradation of aromatic dye methylene blue (MB). The photocatalysis experiments indicate that the percentage degradation of MB is 35.92% and 72.02% in the presence of CPs 1 and 2, respectively, for a time period of 100 min, while in the absence of these CPs the percentage degradation is merely 11.49%. A mechanistic study towards understanding of the photocatalytic degradation of MB was carried out using LC–MS studies and computationally using band gap calculations; a probable mechanistic pathway has also been proposed which was further complimented with Hirshfeld surface analysis. |
| Databáze: | OpenAIRE |
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