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Colorimetric detection of residual hydrogen peroxide in soaked food based on Au@Ag nanorods

Abstract

A simple and selective colorimetric method for H2O2 detection in soaked food samples was developed by using Au@Ag nanorods (Au@Ag NRs) as the signal conducer. In the presence of H2O2, silver atoms on the surface of Au@Ag NRs are oxidized to silver ions, thereby resulting in the red-shift of longitudinal surface plasmon resonance peak of Au@Ag NRs and accompanying a sharp-contrast multicolor change. The linear range for the detection of H2O2 was ranged from 0 to 100 μmol L-1 with a limit of detection 3.2 μmol L-1. Compared with the commercialized test strip, the proposed colorimetric sensor showed a much higher color resolution by naked eyes.

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Publication details

The article was accepted on 04 Jan 2018 and first published on 04 Jan 2018


Article type: Paper
DOI: 10.1039/C7AY02819A
Citation: Anal. Methods, 2018, Accepted Manuscript
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    Colorimetric detection of residual hydrogen peroxide in soaked food based on Au@Ag nanorods

    Q. Chen, T. Lin, J. Huang, Y. Chen, L. Guo and F. Fu, Anal. Methods, 2018, Accepted Manuscript , DOI: 10.1039/C7AY02819A

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