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	Structural diversity of three new Co(II)-based MOFs as a UV light-driven photocatalyst: photocatalytic performance
	Yan, Mei-Hua1; Ray, Manaswini2; Wang, Jun1; Lu, Lu1; Zhang, Wei3; Muddassir, Mohd.4; Mohanty, Aurobinda5
	2023-10-23
摘要	The incremental use of herbicides is now posing a pollution problem in aquatic systems. Therefore, it is necessary to decompose this class of harmful components existing in wastewater. Metal-organic frameworks (MOFs) are a peculiar class of multidimensional materials that can be employed as a photocatalyst to decompose pesticides present in the wastewater discharged. For this we have synthesized three high-stability Co(II)-based metal organic frameworks (MOFs) [Co(H2L)(bb)DMF](n) (1), [Co(L)(0.5)(bb)](n) (2), and [NH2(CH3)(2)][Co-2(mu(3)-OH)(L)(bb)] (3), where H4L = 5,5 '-(1,2-phenylenebis(methyleneoxy)diisophthalic acid and bb = 4,4 '-bis(imidazolyl)biphenyl. These MOFs are characterized by thermal analyses and single-crystal X-ray diffraction. 1 features a new 3D, 2-nodal 4,4-connected network with a Schl & auml;fli symbol of (4(4)6(2)). 2 displays a 3D, 4,4-c network, with a Schl & auml;fli symbol (6(4)8(2)). 3 shows a 3D two nodal (3,8) connected net with a Schl & auml;fli symbol (4(3))(2)(4(6)6(18)8(4)). 1-3 are semiconducting in nature with E-g of 3.31 eV, 2.95 eV, and 3.25 eV, respectively. These three MOFs show high catalytic activities for the degradation of different pesticides, including four common pesticides thiabendazole (TBZ), dinotefuran (DTF), metamitron (MMT), and ciprofloxacin (CIP) in an aqueous solution. TBZ shows photocatalytic degradation by the synthesized MOF, which demonstrated 89% degradation. Moreover, the possible photodegradation mechanism was proposed and explored by a radical tapping experiment. The Hirshfeld surfaces study demonstrated that these synthesized coordination polymers contain various forms of intermolecular contacts (C & ctdot;C, H & ctdot;C, H & ctdot;H, and O & ctdot;H).
DOI	10.1039/d3nj03452f
发表期刊	NEW JOURNAL OF CHEMISTRY
ISSN	1144-0546
卷号	47期号:41页码:19167-19176
通讯作者	Wang, Jun(scwangjun2011@126.com) ; Zhang, Wei(zhangwei@cigit.ac.cn) ; Mohanty, Aurobinda(aurobinda65@gmail.com)
收录类别	SCI
WOS记录号	WOS:001081053500001
语种	英语