CsPbBr3 perovskite nanoplatelets: Excellent probes for spectrofluorimetric sensing of chloride and arsenite

被引：15
作者：
Jan, Qounsar [1 ]
Nabi, Shazia [1 ]
Sofi, Feroz Ahmad [1 ]
Bhat, Mohsin Ahmad [1 ]
机构：
[1] Univ Kashmir, Dept Chem, Srinagar 190006, J&K, India
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2022年 / 270卷
关键词：
CsPbBr3 Perovskite nanoplatelets; Spectroflourimetry; Anion exchange; Ionic Liquid; Arsenic; LEAD HALIDE PEROVSKITES; ANION-EXCHANGE; IONIC LIQUIDS; SUBSEQUENT REMOVAL; ARSENIC(III); OXIDATION; NANOCRYSTALS; QUANTIFICATION; IMPURITIES; AS(III);
D O I：
10.1016/j.saa.2021.120749
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
Herein, we report a novel analytical exploitation of selective but very facile anion exchange induced phase transformations of CsPbBr3 Perovskite crystallites. Specifically, with CsPbBr3 Perovskite as Spectrofluorimetric probes, we demonstrate a simple, quick and economical analytical procedure for sensing and quantification of chloride content in room temperature ionic liquids (RTILs), and that of toxic pollutant Arsenic (III) in water samples. The presented approach relies on the variations in photoluminescence characteristics of CsPbBr3 Perovskite nanoplatelets on account of very facile substitution of their bromide ions by chloride ions available in their vicinity. This unique property of CsPbBr3 Perovskite nanoplatelets ensures detection of chloride impurity in RTIL samples, within the concentration range of 0.007-0.016 ppb with LOD c.a. 0.0010 ppb +/- 0.44% and of Arsenic in water samples within the concentration range 0.48-4.32 ppb with LOD as low as c.a. 0.074 ppb +/- 0.46%. (C) 2021 Elsevier B.V. All rights reserved.
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页数：8
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