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Issue 49, 2014
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A simple visual and highly selective colorimetric detection of Hg2+ based on gold nanoparticles modified by 8-hydroxyquinolines and oxalates

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Abstract

Gold nanoparticles (AuNPs) modified by 8-hydroxy-quinoline (8-HQ) and stabilized by polyvinylpyrrolidone (PVP) were used for highly selective and sensitive colorimetric detection of Hg2+ based on the quick aggregation of AuNPs leading to a color change from wine red to gray. The limit of Hg2+ detection in real environmental water samples is 4.0 × 10−7 M by the naked eyes and 1.0 × 10−8 M by UV-vis spectroscopy.

Graphical abstract: A simple visual and highly selective colorimetric detection of Hg2+ based on gold nanoparticles modified by 8-hydroxyquinolines and oxalates

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Article information


Submitted
04 Jan 2014
Accepted
26 Feb 2014
First published
28 Feb 2014

Chem. Commun., 2014,50, 6447-6450
Article type
Communication

A simple visual and highly selective colorimetric detection of Hg2+ based on gold nanoparticles modified by 8-hydroxyquinolines and oxalates

Y. Gao, X. Li, Y. Li, T. Li, Y. Zhao and A. Wu, Chem. Commun., 2014, 50, 6447
DOI: 10.1039/C4CC00069B

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