期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 331, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2020.129377
关键词
Metal-organic framework; Crystal structure; Antibiotic; Pesticide; Fluorescence sensing
资金
- NSFC [21801205, 21871220, 21971207]
- NSF of Shaanxi province [2019JM-082]
- Key Science and Technology Innovation of Shaanxi Province [2019TD-007]
The abuse of organic pollutants poses a serious threat to human health and the environment, highlighting the importance of effective detection methods. A novel 3D metal-organic framework was found to be able to quickly detect antibiotics and pesticides in water with good tolerance and low detection limit.
As a hot issue of global concern, the abuse of organic pollutants, including pesticides and antibiotics poses a great threat to the human health and ecological environment. Effective and accurate detection of these species is of profound significance in many fields. In this work, a novel 3D metal-organic framework (MOF) [Eu-2(dtztp)(OH)(2)(DME)(H2O)(2.5)]center dot 2H(2)O (1) was solvothermally synthesized. 1 is a three-dimensional framework based on tetranuclear [Eu-4(mu(3)-OH)(4)(mu(2)-OH2)](8+ )clusters, and reveals the great chemical stability and excellent tolerance in water and organic solvents. The MOF also shows strong fluorescence that was undisturbed by the pH in aqueous water (pH = 3-12). Importantly, 1 can quickly detect metronidazole (MDZ) and dimetridazole (DMZ) antibiotics as well as 2,6-dichloro-4-nitroaniline (DCN) pesticide in water with good recyclability and low detection limit. MDZ, DMZ and DCN were also successfully detected in calf serum and lake water, respectively. The mechanism of fluorescence quenching was disclosed through the combination of experiments and density functional theory calculations.
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