Open AccessPreparation of near‐infrared Ag 2 S quantum dots for detection of bisphenol A in water
Author(s) -
Hu Yanling,
Deng Chun,
He Yu,
Ge Yili,
Song Gongwu
Publication year - 2018
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2017.0199
Subject(s) - quantum dot , bisphenol a , fluorescence , chemistry , nanoclusters , nuclear chemistry , hydrate , materials science , analytical chemistry (journal) , inorganic chemistry , photochemistry , nanotechnology , environmental chemistry , organic chemistry , physics , quantum mechanics , epoxy
The work develops a novel method for the detection of bisphenol A (BPA) based on glutathione (GSH)‐protected silver sulphide quantum dots (Ag 2 S QDs), which was simple, fast, non‐toxic, sensitive and selective. Ag 2 S QDs were synthesised with a sulphur–hydrazine hydrate complex as the S 2− source and GSH as the stabiliser. Ag 2 S QDs, near‐infrared QDs, offered the advantages over lower background fluorescence and lower signal loss. The fluorescence peak of Ag 2 S QDs at 650 nm was quenched significantly in the presence of BPA. Good linear correlations were obtained over the concentration range from 0 to 60 μM of BPA under optimised conditions. The developed selective and sensitive method presaged more opportunities for the application in environmental samples.