Highly sensitive and selective fluorescent detection of phosphate in water environment by a functionalized coordination polymer

Water Research
Yanqiu ZhangIan R Jenkinson

Abstract

Phosphate, due to its somatotrophic effect on organisms, can cause severe eutrophication with excessive content in water. Conventional methods for phosphate detection, which are based on complicated instruments, are time-consuming. Here we report a luminescent lanthanide functionalized coordination polymer (Eu@BUC-14) by doping Eu3+ cations to BUC-14 nanocrystals. This Eu3+ functionalized hybrid (Eu@BUC-14) presents excellent luminescence features of Eu3+ ion that originated from efficient energy transfer from the ligand. The detection results show that Eu@BUC-14 is a highly efficient luminescent probe for phosphate detection in aqueous solutions, exhibiting high sensitivity with a low detection limit of 0.88 μM and a short response time of within 5 min. More significantly, Eu@BUC-14 has a high specificity for PO43- over fifteen other pollutant anions and eleven metal cations. The sensing mechanism is proposed via an in-depth analysis of the interaction between PO43- and Eu3+. Simultaneously, it displays high adsorption ability toward PO43- (57.9 mg P/g), making it an outstanding multifunctional material. And the adsorption process plays an important role in preconcentration of PO43- which can lead to a quick fluorescent respon...Continue Reading

Citations

Jun 9, 2020·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Nahid PourrezaHamed Golmohammadi
May 29, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Harpreet KaurRik Rani Koner
Sep 23, 2021·Environmental Science & Technology·Yuanyuan LuXinqiang Liang

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