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Issue 24, 2013
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Bio-inspired in situ growth of monolayer silver nanoparticles on graphene oxide paper as multifunctional substrate

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Abstract

In this study, we report a facile bio-inspired method for large-scale preparation of highly dispersed Ag nanoparticles (NPs) on the surface of flexible reduced graphene oxide (rGO) paper with using dopamine (DA) both as a reductant and a surface modifier. Through the self-polymerization of dopamine, free-standing GO paper can be simultaneously reduced and modified with following in situ growth of monolayer Ag NPs on such a substrate. The spherical Ag NPs with an average diameter of 80 nm have a narrow size distribution and tunable cover density. Such a flexible rGO/Ag hybrid paper presents enhanced antibacterial activity against E. coli and a high active and sensitive SERS response toward Rhodamine 6G (R6G) molecules. The detection signals can be obtained while the R6G concentration is as low as to 10−8 M. This work provides a simple strategy for large-scale fabrication of monolayer Ag NPs on flexible rGO paper as a portable antibacterial substrate and a potential SERS substrate for molecular detection applications.

Graphical abstract: Bio-inspired in situ growth of monolayer silver nanoparticles on graphene oxide paper as multifunctional substrate

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Supplementary files

Article information


Submitted
25 Jul 2013
Accepted
20 Sep 2013
First published
25 Sep 2013

Nanoscale, 2013,5, 12616-12623
Article type
Paper

Bio-inspired in situ growth of monolayer silver nanoparticles on graphene oxide paper as multifunctional substrate

S. Li, Y. Yan, J. Wang and S. Yu, Nanoscale, 2013, 5, 12616
DOI: 10.1039/C3NR03857B

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