期刊
JOURNAL OF MOLECULAR STRUCTURE
卷 1249, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.molstruc.2021.131627
关键词
Coordination polymer; Aromatic dyes; Photocatalysis; Density of states
资金
- Natural Science Research Project of Anhui Province [1708085QB47, 2108085MB51]
- Key Research and Development Program Project of Anhui Province [1804a09020087]
- Foundation of State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering [2017-K32]
- Postdoctoral Research Project of Anhui Province [2020B452]
- Postdoctoral Research Project of West Anhui University [WXBSH2019002]
- College Students' Innovative Entrepreneurial Training Plan Program [202010376023, 202010376022]
- Shenzhen Peacock Plan (Research and Development and Industrialization of in vitro Diagnostic Nanomaterials for Tumors) [KQTD2016022920325195]
- Anhui Natural Science Foundation [2108085MB51]
A new Cu(II) coordination polymer has been synthesized and demonstrated to exhibit excellent photocatalytic performance, with particular effectiveness in the catalytic degradation of methylene blue (MB). The proposed photocatalytic mechanism involves the generation of ∙OH as the main reactive oxygen species in the photodecomposition process.
A new Cu(II) coordination polymer with formula {[Cu(L)(bbi)(H2O)]center dot H2O)(n) (1) (H2L = 1,3-bis(3'-carboxylatophenoxy)benzene, bbi = 1,1'-(1,4-butanediyl)bis(imidazole)), has been prepared and characterized using microanalysis, single crystal and powder X-ray diffraction techniques. The polymer 1 possess 1D double chain, which further extends into 2D layer through packing and hydrogen bond interactions. The polymer has been used as an effective photocatalyst for the photodisintegration of aromatic dyes viz. methyl violet (MV), Rhodamine B (Rh B) and methylene blue (MB). The results suggest that 1 is best photocatalyst for MB and decomposed 84.14% MB in 100 min following pseudo-first order reaction with rate constant k 0.01873 min(-1). Furthermore, the possible photocatalytic mechanism exhibited by 1 for the catalytic degradation of MB was proposed using the trapping experiments and LC-MS methodology which suggested that center dot OH is the main reactive oxygen species involved in photodecomposition of MB. In addition, band gap calculations and Hirshfeld surface analysis have been done to substantiate the photocatalytic mechanism. (C) 2021 Elsevier B.V. All rights reserved.
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