Synthesis and Study of Colloidal Nanocrystals Based on Ternary Chalcogenides for Active Media of Heavy Metal Ions Sensors

A sensing fluorescent probe based on the photoluminescence (PL) quenching of the AgInS2 colloidal nanocrystals (NCs) with a wide bandgap ZnS shell was studied for nickel ions detection. Nanocrystals were synthesized in aqueous solution using mercaptopropionic acid as surfactant. Decreasing of PL int...

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Main Authors: Korepanov, Oleg A., Mazing, Dmitrii S., Aleksandrova, Olga A., Moshnikov, Vyacheslav A.
Format: Conference Proceeding
Language:English
Subjects:
Chalcogenides
chemical sensors
Colloidal nanocrystals
II-VI semiconductor materials
Ions
nanocrystals
Nickel
nickel detection
ternary metal chalcogenides
Zinc compounds
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creator Korepanov, Oleg A.
Mazing, Dmitrii S.
Aleksandrova, Olga A.
Moshnikov, Vyacheslav A.
description A sensing fluorescent probe based on the photoluminescence (PL) quenching of the AgInS2 colloidal nanocrystals (NCs) with a wide bandgap ZnS shell was studied for nickel ions detection. Nanocrystals were synthesized in aqueous solution using mercaptopropionic acid as surfactant. Decreasing of PL intensity of the NCs AgInS2/ZnS in the presence of nickel ions was accompanied by a blueshift of maxima of PL spectra. The shift ranged from 635 to 603 nm with an increase in the concentration of nickel ions from 0 to 4×10-3 mol/L. The quenching effect was described by the Stern-Volmer relationship. The obtained results could be useful for the development of new express-methods for heavy metal detection in aqueous media.
doi_str_mv 10.1109/EIConRus.2019.8657288
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subjects Chalcogenides
chemical sensors
Colloidal nanocrystals
II-VI semiconductor materials
Ions
nanocrystals
Nickel
nickel detection
ternary metal chalcogenides
Zinc compounds
title Synthesis and Study of Colloidal Nanocrystals Based on Ternary Chalcogenides for Active Media of Heavy Metal Ions Sensors
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