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Issue 11, 2015
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AgAuPt nanocages for highly sensitive detection of hydrogen peroxide

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Abstract

The electrocatalytic efficiency of metal nanoparticles depends on their structures as well as compositions. The analytical performance of four Ag-based metal (Ag, AgPt, AgAu, and AgAuPt) nanostructure modified electrodes for detection of hydrogen peroxide was investigated. Silver nanoparticles (Ag NPs) were deposited on an indium tin oxide (ITO) film coated glass surface. Then Ag NPs were used as sacrificed template to generate AgPt, AgAu, and AgAuPt hybrid hollow nanostructures using a galvanic replacement reaction. The AgAuPt nanocages (AgAuPt NCs) show the highest sensitivity for electrochemical detection of hydrogen peroxide in all the metal nanostructures. This modified electrode exhibits a linear current response to hydrogen peroxide concentration in the range of 4 μM to 4 mM with a detection limit of 2 μM at an applied potential of −0.35 V. These results indicate that AgAuPt NCs could be a promising electrochemical material for detection of hydrogen peroxide.

Graphical abstract: AgAuPt nanocages for highly sensitive detection of hydrogen peroxide

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Article information


Submitted
02 Nov 2014
Accepted
17 Dec 2014
First published
17 Dec 2014

RSC Adv., 2015,5, 7854-7859
Article type
Paper
Author version available

AgAuPt nanocages for highly sensitive detection of hydrogen peroxide

Y. Peng, Z. Yan, Y. Wu and J. Di, RSC Adv., 2015, 5, 7854
DOI: 10.1039/C4RA13653E

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