Silver nanoparticles as a cyanide colorimetric sensor in aqueous media

Date

2011-11-01

Author

Hajizadeh, Salahaddin
Farhadi, Khalil
Forough, Mehrdad
Sabzi, Reza Emamali

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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 mu mol L-1-133.3 mu mol L-1 at 394 nm. The proposed method has been successfully used for the determination of cyanide in water samples.

URI

https://hdl.handle.net/11511/90458

Journal

ANALYTICAL METHODS

DOI

https://doi.org/10.1039/c1ay05567d

Collections

Department of Chemistry, Article

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Citation Formats

S. Hajizadeh, K. Farhadi, M. Forough, and R. E. Sabzi, “Silver nanoparticles as a cyanide colorimetric sensor in aqueous media,” ANALYTICAL METHODS, pp. 2599–2603, 2011, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/90458.