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...

Full description

Saved in:
Bibliographic Details
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
Citations: Items that cite this one
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:2376-6565
DOI:10.1109/EIConRus.2019.8657288