期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 238, 期 -, 页码 196-203出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2016.07.029
关键词
Fluorescence sensor; Silicon nanoparticles; Chromium (VI); Hydrogen sulfide; Inner filter effect
资金
- National Natural Science Foundation of China [21375037, 21275051, 21475043]
- Scientific Research Fund of Hunan Provincial Science and Technology Department
- Scientific Research Fund of Hunan Provincial and Education Department [13JJ2020]
- Doctoral Fund of Ministry of Education of China [20134306110006]
A highly sensitive and selective fluorescence sensor for detection of chromium(VI) and hydrogen sulfide was developed by using silicon nanoparticles (SiNPs) as probe. The fluorescence of SiNPs was effectively quenched by Cr(VI) via the inner filter effect. Upon addition of hydrogen sulfide, the fluorescence of SiNPs was recovered due to the oxidation-reduction between Cr(VI) and H2S. Under optimal conditions, the wide linear response ranges were obtained over the range of 0.1200 mu M and 0.1200 mu M with the low detection limits of 28 nM and 22 nM for Cr(VI) and H2S, respectively. The sensing platform was successfully applied to determination of Cr(VI) and H2S in real samples. (C) 2016 Elsevier B.V. All rights reserved.
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