Journal
CHEMICAL COMMUNICATIONS
Volume 55, Issue 48, Pages 6890-6893Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9cc02415h
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Funding
- BCSC postdoctoral fellowship from the Jacob Blaustein Center for Scientific Cooperation, BGU Israel
- Marcus Family Endowment Fund
- Canadian Associates of Ben Gurion University (CABGU) Quebec region
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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 (Ag-0 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.
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