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Advanced "turn-on" colorimetric uranium platform based on the enhanced nanozyme activity of a donor-acceptor structured covalent organic framework.
Xiao, Sai Jin; Huang, Jing; Qiu, An Ting; Liu, Guang Zhou; Zhang, Li; Wu, Ting; Shi, Ya Di; Qiu, Jian-Ding.
Afiliación
  • Xiao SJ; State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang, 330013, Jiangxi, China.
  • Huang J; School of Chemistry and Material Science, East China University of Technology, Nanchang, 330013, Jiangxi, China.
  • Qiu AT; School of Chemistry and Material Science, East China University of Technology, Nanchang, 330013, Jiangxi, China.
  • Liu GZ; School of Chemistry and Material Science, East China University of Technology, Nanchang, 330013, Jiangxi, China.
  • Zhang L; School of Chemistry and Chemical Engineering, Nanchang University, 330031, Jiangxi, China. Electronic address: zhangli8@ncu.edu.cn.
  • Wu T; School of Chemistry and Material Science, East China University of Technology, Nanchang, 330013, Jiangxi, China.
  • Shi YD; School of Chemistry and Material Science, East China University of Technology, Nanchang, 330013, Jiangxi, China.
  • Qiu JD; State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang, 330013, Jiangxi, China. Electronic address: jdqiu@ecut.edu.cn.
Anal Chim Acta ; 1302: 342503, 2024 May 08.
Article en En | MEDLINE | ID: mdl-38580412
ABSTRACT

BACKGROUND:

The increasing uranium containing wastes generated during uranium mining and finishing pose a huge threat to the environment and human health, and thus robust strategies for on-site monitoring of uranium pollutant are of great significance for environmental protection around uranium tailings.

RESULTS:

Herein, a facile "turn-on" colorimetric platform that can achieve uranium detection by spectrometry and naked eyes was developed based on the uranium-enhanced nanozyme activity of covalent organic framework (JUC-505). Thanks to the extended π-conjugated skeleton and donor-acceptor (D-A) structure, JUC-505 exhibited superior photo-activated nanozyme activity, which would be prohibited when the cyano group in JUC-505 skeleton was transformed to the amidoxime group. Further results elucidated that the coordination of uranium with amidoxime groups led to the electron transfer between uranium and the JUC-505-AO skeleton, and thus significantly restored the nanozymatic activity of JUC-505-AO with the subsequent remarkable color changes. Moreover, the uranium concentrations in uranium tailing wastewater detected by the present "turn-on" colorimetric method were well agreed with those by ICP-MS, demonstrating a high accuracy of the present method in real samples.

SIGNIFICANCE:

The D-A structured JUC-505 with superior photocatalytic property and nanozymatic activity was applied to facilitate colorimetric detection of uranium, which displays the advantages of low detection limit, excellent selectivity, fast response and simple operation for uranium detection in real samples, and shows a great potential in on-site monitoring of uranium pollutant around uranium tailings as well as nuclear power plant.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Anal Chim Acta Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Anal Chim Acta Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos