期刊
RSC ADVANCES
卷 9, 期 51, 页码 29864-29872出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ra05167h
关键词
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资金
- Sichuan University of Science and Engineering [2015RC23, 2017RCL02]
- Education Committee of Sichuan Province [17ZA0265, 18ZB0422, 18ZB0425]
- Department of Science and Technology of Sichuan Province [2017JY0129]
- Project of Zigong Science Technology [2016HG04, 2018YYJC01]
- Opening Project of Key Laboratory of Green Chemistry of Sichuan Institutes of Higher Education [LZJ1705]
- Student's Platform for Innovation and Entrepreneurship Training Program [201810622053]
- Council of Scientific and Industrial Research, New Delhi [01(2899)/17/EMR-II]
- Deanship of Scientific Research at King Saud University [RG-1440-076]
The solvothermal reactions of 5,5 '-(1,4-phenylenebis(methyleneoxy))diisophthalic acid (H4L) and the N-donor ancillary ligand 3,3 ',5,5 '-tetramethyl-4,4 '-bipyrazole (bpz) with cadmium(ii) salts at two different reaction temperatures yielded two new metal-organic frameworks (MOFs), viz., [Cd(H2L)(bpz)](n) (1) and [Cd-2(H4L)(L)(bpz)(2)](n) (2), which have been characterized by FTIR and single crystal X-ray diffraction. The single crystal X-ray diffraction studies revealed that 1 displays a 3-periodic network with monometallic SBU, while 2 exhibits a 3-periodic network with a 2-fold interpenetration feature. The effects of variation in reaction temperature on the architecture of MOFs 1 and 2 have been discussed. The luminescence investigation indicates that both 1 and 2 displayed good turn-off luminescence sensing against nitroaromatic compounds (NACs), especially m-nitrophenol (MNP), via a decrease in their luminescence intensities with a K-sv value of 6.43 x 10(3) for 1 and 2.03 x 10(4) for 2 and LOD values of 1.09 and 0.81 ppm for 1 and 2, respectively. The plausible mechanism for the decline in luminescence intensity of the MOFs with NACs has been addressed using theoretical calculations. The photocatalytic properties for both the MOFs demonstrated that they display efficient photocatalytic performances to degrade methyl violet (MV) under UV irradiation. The plausible mechanism through which these MOFs exhibited photocatalytic properties has been suggested using band gap calculations.
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