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Issue 5, 2018
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Colorimetric detection of residual hydrogen peroxide in soaked food based on Au@Ag nanorods

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Abstract

A simple and selective colorimetric method for H2O2 detection in soaked food samples was developed using Au@Ag nanorods (Au@Ag NRs) as the signal conducter. 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 the longitudinal surface plasmon resonance peak of Au@Ag NRs accompanied by a sharp-contrast multicolor change. The linear range for the detection of H2O2 was from 0 to 100 μmol L−1 with a limit of detection of 3.2 μmol L−1. Compared with the commercialized test strip, the proposed colorimetric sensor showed a much higher color resolution by the naked eyes.

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

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Publication details

The article was received on 06 Dec 2017, accepted on 04 Jan 2018 and first published on 04 Jan 2018


Article type: Paper
DOI: 10.1039/C7AY02819A
Citation: Anal. Methods, 2018,10, 504-507
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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, 10, 504
    DOI: 10.1039/C7AY02819A

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