This research aims to verify the antibacterial and anti-corrosion properties of modified surfaces of indium-tin oxide (ITO), stainless steel (SS), and nitrocellulose filters with poly-N-vinyl carbazole (PVK)-graphene oxide (GO) and graphene oxide (GO). To coat the surfaces, a ratio of 97:3 (wt%) of the nanocomposite PVK-GO was used. The materials used for coating were also tested for human toxicity. The results show that the new materials are non-toxic to human fibroblast cells. Antibacterial measurements (plate count assay, DNA measurements, live-dead assay) of the modified filter surfaces with GO and PVK-GO indicated high bacterial toxicity and 6 log bacterial removal capacity against different microorganisms, such as E. coli and B. subtilis. Coated surfaces of SS and ITO with GO and PVK-GO were also resistant to bacterial deposition, and SS showed resistance to chemical corrosion under prolonged exposure to NaCl solution (0.5M). Therefore, these materials have anti-microbial and anti-corrosive environmental engineering applications.

Environmental engineering applications of graphene oxide nanomaterials

243rd National Meeting (2012)

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