期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 267, 期 -, 页码 542-548出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2018.04.064
关键词
Metal-organic framework; Post-functionalization; Luminescent sensing; Fe3+ ion; Aqueous solution
资金
- Institute of Materials, China Academy of Engineering Physics
- Ministry of Science and Technology of China [2012YQ090194-9, 2013YQ510391]
The detection of Fe3+ in aqueous solution is a pertinent issue with implications in human health and environmental monitoring. As is known, Zr-based MOFs with UiO-66 topology exhibit extraordinary high thermal and chemical stability, making them excellent candidates for various applications. In this study, we have demonstrated a lanthanide functionalized MOF as a turn-off luminescent sensory material for the detection of Fe3+ in aqueous media. The proposed MOF, denoted as Eu3-VUiO-66(20), was synthesized through a facile hydrothermal reaction and followed Eu3+ post-functionalization. Luminescent investigations revealed the distinct quenching effect of Fe3+, with a fast response time within seconds. The results also demonstrated the excellent selectivity toward Fe3+ among a series of metal ions in aqueous solution and allowed a low detection limit of 12.8 mu M. This work developed a very promising strategy for the simple, accurate and instantaneous sensing of metal ions in practical applications. (C) 2018 Elsevier B.V. All rights reserved.
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