Colorimetric Sensor Based on Silver Nanoparticle – Embedded Polymethacrylate Matrix

Abstract:

Silver nanoparticles synthesized by a reagent less method involving only thermal treatment have been used in colorimetric assay for the detection of hydrogen peroxide. The silver nanoparticles were directly synthesized in polymethacrylate matrix (PMM) by method based on the reduction of the inorganic precursor AgNO₃, which was pre-adsorbed by PMM from solution, through thermal treatment. These silver nanoparticles were characterized using absorption spectroscopy. It was shown that the silver nanoparticles in PMM (Ag – PMM) had ability for reduction of hydrogen peroxide with silver oxidation. As a result, the yellow color of Ag – PMM samples was gradually changed to transparent color depending on the hydrogen peroxide concentrations. Hence, the silver nanoparticles in PMM could be used as colorimetric sensor for hydrogen peroxide in aqueous medium.

• Periodical: Advanced Materials Research (Volume 1040)
• Pages: 923-927
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1040.923
• Online since: September 2014
• Authors: Nataliya A. Gavrilenko, Nadezhda V. Saranchina*, Mikhail A. Gavrilenko
• Keywords: Colorimetric Sensor, Immobilized Reagents, Naked-Eye Determination, Solid-Phase Spectrophotometry, Transparent Polymeric Matrix

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