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Issue 48, 2019
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Silver-doped laser-induced graphene for potent surface antibacterial activity and anti-biofilm action

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Abstract

Previously, laser-induced graphene (LIG) coated surfaces were shown to resist biofilm growth, although the material was not strongly antibacterial. Here, we show LIG surfaces doped with silver nanoparticles (Ag0 or AgNPs) as highly antibacterial surfaces. Starting from AgNO3 polyethersulfone (PES) polymer substrates, silver nanoparticles between 5–10 nm were generated in situ during the lasing process and stably embedded in the fibrous and porous structure of LIG in a single step. These silver doped LIG (Ag@LIG) surfaces were highly toxic to bacteria via a mechanism of both Ag+ ion release and possible surface toxicity of the AgNPs. The added antibacterial function of Ag-nanoparticles expands the functionality of LIG coated surfaces and might lead to highly effective point of use/entry devices in rural areas or in disaster situations with contaminated water sources.

Graphical abstract: Silver-doped laser-induced graphene for potent surface antibacterial activity and anti-biofilm action

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Supplementary files

Article information


Submitted
28 Mar 2019
Accepted
18 May 2019
First published
21 May 2019

Chem. Commun., 2019,55, 6890-6893
Article type
Communication

Silver-doped laser-induced graphene for potent surface antibacterial activity and anti-biofilm action

A. Gupta, L. Holoidovsky, C. Thamaraiselvan, A. K. Thakur, S. P. Singh, M. M. Meijler and C. J. Arnusch, Chem. Commun., 2019, 55, 6890
DOI: 10.1039/C9CC02415H

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