Silver nanoparticles as a cyanide colorimetric sensor in aqueous media

Date

2011-11-01

Author

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

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

105
views

0
downloads

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

Suggestions

OpenMETU
Core

Silver nanoparticles in the presence of Ca2+ as a selective and sensitive probe for the colorimetric detection of cysteine Hajizadeh, Salahaddin; Farhadi, Khalil; Forough, Mehrdad; Molaei, Rahim (2012-06-01) A sensitive and selective cysteine colorimeric sensor based on the interaction between cysteine, silver nanoparticles (AgNPs) and calcium ions has been developed. In the presence of Ca2+ and NaCl, cysteine could rapidly induce the aggregation of AgNPs, thereby resulting in a yellow-to-red color change. The presence of 10 mM NaCl in the samples decreases the electrostatic repulsion and accelerates the aggregation of AgNPs. Results demonstrated that other amino acids cannot change the color of AgNPs solution ...
Poly(methyl methacrylate) nanocomposites involving aromatic diboronic acid Goktas, Muberra; Hacaloğlu, Jale (2019-12-01) In this work, poly(methyl methacrylate), PMMA, composites involving various amounts of aromatic diboronic acid, BDBA, in the absence and presence of organically modified montmorillonite, Cloisite 30B, C30B, were prepared and characterized by X-ray diffraction, transmission electron microscopy, thermogravimetry, and direct pyrolysis mass spectrometry analyses. Morphologic analyses indicated homogenous dispersion of additives in PMMA matrix. Increase in thermal stability of PMMA was observed as the amount of ...
SURFACE STABILITY OF BISMUTH-RUTHENIUM OXIDE ELECTRODES Gökağaç Arslan, Gülsün; KENNEDY, BJ (1993-07-01) The effect of anodic polarization on the surface composition of Bi-Ru oxide, Bi2Ru2O7+y, electrodes in acid solution and acid-alcohol solutions has been studied by scanning electron microscopy, energy dispersive X-ray analysis, and X-ray photoelectron spectroscopy. In acidic solution the surface is unstable under either oxidation or reductive conditions, with Bi being lost from the structure. During electrolysis the surface becomes covered with particles of a Bi oxide species.
PARTIAL MOLAR PROPERTIES OF MGCL2 IN MGCL2-KCL-CACL2 MELTS ZHU, J; Karakaya, İshak; THOMPSON, WT (The Electrochemical Society, 1988-01-01) To further the understanding of electrolytes of value in industrial magnesium electrolysis, the reversible emf for the formation of in fused salts containing and was studied. The data made possible the calculation of thermodynamic solution properties which were used with other data to construct features of the ternary phase diagram. The multiple discrete complex anion (MDCA) model was tested against the thermodynamic findings from the present study. Reasonable agreement was obtained between the experimen...
Photogalvanic effect in aqueous Methylene blue nickel mesh systems: Conversion of light into electricity Bayer, IS; Eroğlu, İnci; Turker, L (Wiley, 2001-03-10) The photogalvanic effect in electrochemical cells, employing aqueous Methylene blue and Fe(II)/Fe(III) couple electrolyte and nickel-mesh electrodes, were experimentally investigated. Five different standard H-cell configurations were set-up by modifying the electrolyte. Long-term open-circuit Voltage measurements were conducted in order to test the stability of the cells. Light on-off reproducibility experiments were also carried out during lengthy cell operations. By comparing experimental quantum yield w...

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.