Issue 11, 2011

Silver nanoparticles as a cyanide colorimetric sensor in aqueous media

Abstract

The interaction between aqueous colloidal silver nanoparticles (AgNPs) and cyanide ions was studied using UV-Vis absorption and scanning electron microscopy (SEM) techniques. It was found that AgNPs were oxidized by dissolved oxygen in the presence of cyanide ions, resulting in a considerable decrease in the intensity of the surface plasmon resonance (SPR) absorption band of AgNPs. So, we propose a simple, cost effective, rapid, sensitive and selective colorimetric sensor for the detection of cyanide using AgNPs in aqueous media. There is a linear relationship between the absorbance intensity of AgNPs and the concentration of cyanide ions over the range of 16.7 μmol L−1–133.3 μmol L−1 at 394 nm. The proposed method has been successfully used for the determination of cyanide in water samples.

Graphical abstract: Silver nanoparticles as a cyanide colorimetric sensor in aqueous media

Article information

Article type
Paper
Submitted
09 Sep 2011
Accepted
09 Sep 2011
First published
07 Oct 2011

Anal. Methods, 2011,3, 2599-2603

Silver nanoparticles as a cyanide colorimetric sensor in aqueous media

S. Hajizadeh, K. Farhadi, M. Forough and R. E. Sabzi, Anal. Methods, 2011, 3, 2599 DOI: 10.1039/C1AY05567D

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