Antimicrobial behavior of novel surfaces generated by electrophoretic deposition and breakdown anodization

Abstract

Biofilms have devastating impacts on many industries such as increased fuel consumption and damage to surfaces in maritime industries. Ideal biofouling management is inhibition of initial bacterial attachment. The attachment of a model marine bacterium (Halomonas pacfica g) was investigated to evaluate the potential of these new novel surfaces to resist initial bacterial adhesion. Novel engineered surfaces were generated via breakdown anodization or electrophoretic deposition, to modify three parameters: hydrophobicity, surface chemistry, and roughness. Mass transfer rates were determined using a parallel plate flow chamber under relevant solution chemistries. The greatest deposition was observed on the superhydrophilic surface, which had micro- and nano-scale hierarchical structures composed of titanium oxide deposited on a titanium plate. Conversely, one of the hydrophobic surfaces with micro-porous films overlaid with polydimethylsiloxane appeared to be most resistant to cell attachment.

Stainless steel coated by Cu NPs via dopamine coupling for antifouling application

“…Biofouling of hull surfaces was ascribed to marine microorganisms colonization, which caused severe problems such as increased operating costs, fuel consumption, and CO 2 emission . Many methods have been utilized to prevent the occurring of biofouling, but it is still a challenge to develop the new antifouling method with high efficiency and broad spectrum because of the complexity of the marine environment and diversity of the fouling organisms . With the International Maritime Organization (IMO) banning the TBT‐containing coatings, Cu‐based antifouling coatings draw extensive attention …”

“…Many methods have been utilized to prevent the occurring of biofouling, [6][7][8] but it is still a challenge to develop the new antifouling method with high efficiency and broad spectrum because of the complexity of the marine environment and diversity of the fouling organisms. 5,9 With the International Maritime Organization (IMO) banning the TBT-containing coatings, Cu-based antifouling coatings draw extensive attention.…”