期刊
DALTON TRANSACTIONS
卷 50, 期 35, 页码 12197-12207出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1dt01446c
关键词
-
资金
- NSF of Tianjin [18JCYBJC89100]
In this study, metal-organic framework-based fluorescent probes were developed for efficient detection of polluting ions in groundwater, showing high sensitivity and good anti-interference ability. Additionally, Eu3+-incorporated samples with dual-emission were fabricated, acting as multi-target probes for selectively detecting specific ions. The recognition mechanism may be attributed to the competitive energy absorption between MOFs or Eu3+@MOFs and the analytes.
Developing metal-organic framework (MOF)-based fluorescent probes for efficient detection and discrimination of polluting ions in groundwater is vital for environmental protection and human health. In this paper, we prepared two luminescence-active transition MOFs, namely, Zn-MOF and Cd-MOF, and conducted sensing experiments. The results show that they both exhibit multiple-target detection for Fe3+, Pb2+ and Cr(vi) with high sensitivity, good anti-interference ability and good recyclability even with different frameworks. In addition, Eu3+-incorporated samples, Eu3+@MOFs, with dual-emission have been fabricated via efficient encapsulation of Eu3+ ions into the MOF host. As expected, Eu3+@MOF hybrids also act as multi-target and self-calibrated probes to selectively detect Fe3+ and Cr(vi) ions. However, the quenching efficiencies of the original MOFs towards Fe3+ are higher than those of Eu3+@MOFs. Thus, we could differentiate Fe3+, Pb2+ and Cr(vi) ions by comparing the changes of fluorescence emission between Eu3+@MOFs and the original MOFs. The recognition mechanism may be attributed to the competitive energy absorption between MOFs or Eu3+@MOFs and the analytes.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据