Issue 30, 2018
From the journal:

RSC Advances

A long-persistent phosphorescent chemosensor for the detection of TNP based on CaTiO3:Pr3+@SiO2 photoluminescence materials†

Fangfang Li,a   Fengyi Wang,a   Xuan Hu,a   Baozhan Zheng,a   Juan Du ORCID logo *ab  and  Dan Xiao ORCID logo *ab  

* Corresponding authors

a College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
E-mail: dujuanchem@scu.edu.cn, xiaodan@scu.edu.cn

b Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China

Abstract

The detection of nitroaromatic explosives is important due to their strong explosive force and harmfulness in the environment, and for homeland security and public safety. Herein, a phosphorescence CaTiO3:Pr3+@SiO2 nanosensor was successfully developed for the sensitive and selective detection of 2,4,6-trinitrophenol (TNP). The red-emitting phosphorescent chemosensor CaTiO3:Pr3+@SiO2 possessed a long enough phosphorescence lifetime of 0.016 s. The TNP induced phosphorescence quenching process of CaTiO3:Pr3+@SiO2 presented a wide linearity with TNP concentrations ranging from 0.5 to 100 μM, and the detection limit was found to be 20.6 nM. Furthermore, this sensor displayed a high selectivity toward TNP over other structurally similar compounds like 2,4,6-trinitrotoluene (TNT), 2,4-dinitrotoluene (DNT), 4-nitrotoluene (NT), 2,4-dinitrophenol (DNP), 4-nitrophenol (NP) and phenol. This sensing system was successfully used in the test of TNP concentrations in water samples, and showed great potential for practical application.

Graphical abstract: A long-persistent phosphorescent chemosensor for the detection of TNP based on CaTiO3:Pr3+@SiO2 photoluminescence materials

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DOI
https://doi.org/10.1039/C8RA02665C
Article type
Paper
Submitted
27 Mar 2018
Accepted
27 Apr 2018
First published
04 May 2018
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2018,8, 16603-16610

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A long-persistent phosphorescent chemosensor for the detection of TNP based on CaTiO3:Pr3+@SiO2 photoluminescence materials

F. Li, F. Wang, X. Hu, B. Zheng, J. Du and D. Xiao, RSC Adv., 2018, 8, 16603 DOI: 10.1039/C8RA02665C

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