Biofouling studies on nanoparticle-based metal oxide coatings on glass coupons exposed to marine environment

Dineshram, R.; Subasri, R.; Somaraju, K.R.C.; Jayaraj, K.; Vedaprakash, L.; Ratnam, Krupa; Joshi, Shrikant V.; Venkatesan, R.

doi:10.1016/j.colsurfb.2009.06.028

Cited by 51 publications

(19 citation statements)

References 11 publications

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“…We first apply our model to quantify the role of the combined electrostatic‐vdW interactions in the anti‐biofouling action of the Titanium oxide coating for two separate cases – Case 1: U. linza bacterium causing biofouling in a marine system (typical salt concentration of

c_{\infty} = 0.6 M

) [23] and Case 2: E. coli bacterium causing biofouling in a saline medium (

c_{\infty} = 0.1 M

) [24] meant for preserving surgical instruments. As has been discussed already, here we simply consider the nonspecific adhesion (dictated by the interplay of the electrostatic and vdW forces) without accounting for the specific structure of the microorganism.…”

Section: Resultsmentioning

confidence: 99%

Coating for preventing nonspecific adhesion mediated biofouling in salty systems: Effect of the electrostatic and van der waals interactions

et al. 2020

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Coating for preventing nonspecific adhesion mediated biofouling in salty systems: Effect of the electrostatic and van der waals interactionsDevelopment of anti-biofouling coating has attracted immense attention for reducing the massively detrimental effects of biofouling in systems ranging from ship hulls and surgical instruments to catheters, implants, and stents. In this paper, we propose a model to quantify the role of electrostatic and van der Waals (vdW) forces in dictating the efficacy of dielectric coating for preventing the nonspecific adhesion mediated biofouling in salty systems. The model considers a generic charged lipid-bilayer encapsulated vesiclelike structure representing the bio-organism. Also, we consider the fouling caused by the nonspecific adhesion of the bio-organism on the substrate, without accounting for the explicit structures (e.g., pili, appendages) or conditions (e.g., surface adhesins secreted by the organisms) involved in the adhesion of specific microorganism. The model is tested by considering the properties of actual coating materials and biofouling causing microorganisms (bacteria, fungi, algae). Results show that while the electrostatic-vdW effect can be significant in anti-biofouling action for cases where the salt concentration is relatively low (e.g., saline solution for surgical instruments), it might not be effective for marine environment where the salt concentration is much higher. The findings, therefore, point to a hitherto unexplored driving mechanism of anti-biofouling action of the coating. Such an identification will also enable the appropriate choices of the coating materials (e.g., possible dielectric material with volume charge) and other system parameters (e.g., salinity of the solution for storing the surgical instruments) that will significantly improve the efficiency of the coatings in preventing the nonspecific adhesion mediated biofouling.Abbreviations: DLVO, Derjaguin-Landau-Verwey-Overbeek; EDL, electric double layer; PE, polyelectrolyte; PM, plasma membrane; vdW, van der Waals materials and surface structures that prevent such adhesion and colonization action [9-11] and thereby prevent biofouling. The different forces that drive such anti-biofouling action include superhydrophobicity [6], superwettability [12], polymer interactions [11], micro-texturing [13], toxicity [14], electrochemical disinfection action [15], and so on.In this paper, we develop a model for studying the effect of combined van der Waals (vdW) and electrostatic interactions in enabling a dielectric coating to prevent the nonspecific adhesion-mediated under-water biofouling from different microorganisms like bacteria, fungi, algae, and so on ( Fig. 1). At the outset, we shall like to emphasize that our model does not consider any microorganism-specific adhesion that might be controlled by microorganism appendages Color online: See article online to view Figs. 1-3 in color.

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c_{\infty} = 0.6 M

) [23] and Case 2: E. coli bacterium causing biofouling in a saline medium (

c_{\infty} = 0.1 M

Section: Resultsmentioning

confidence: 99%

Coating for preventing nonspecific adhesion mediated biofouling in salty systems: Effect of the electrostatic and van der waals interactions

et al. 2020

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“…Moreover, hydrophilic surfaces are thought to be capable of antifouling. For example, antifouling behaviors are exhibited when adding metal nanoparticles such as TiO 2 , because the photocatalytic activities introduced by solar ultraviolet will make the surface more hydrophilic so that the formed biofilm is washed more easily [126]. However, some species studied have exhibited opposite adhesion behavior on the same sets of surfaces, highlighting the importance of differences in cell-surface interactions [32,66].…”

Section: Antifouling By Modification Of Surface Topography and Hydropmentioning

confidence: 99%

Progress of marine biofouling and antifouling technologies

et al. 2010

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“…Biofouling is defined as the process resulting in the accumulation of microscopic organisms, plants and animals on abiotic surfaces, both natural (rock and wood) and artificial structures (piers, platforms, ship hulls, etc), when immersed in liquid environment like rivers, lakes and the ocean 1,2,3 . The biofouling process has negative impact in various marine activities, highlighting product contamination, energetic losses related to increase of friction, resistance added to heat transfer and pressure losses, leading to significant losses for global industry 4,5 .Besides that, the biofouling process is harmful also for oil platforms, marine pipes and cooling systems in nuclear power plants.…”

Section: Introductionmentioning

confidence: 99%

TiO2 thin Films for Biofouling Applications

et al. 2017

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This work presents a study of TiO 2 thin films prepared by sputtering, for using as protection for biofouling action on marine structures. Titanium oxide thin films were prepared with different amount of oxygen on the surface of regular 1020 steel, a structural material for marine technology. The cristalline structure analysis evidenced the formation of anatase and rutile phases, as well as an amorphous phase of titanium oxide. Roughness measurements shown that the surface finish can contribute to the fixation of microorganisms. The crystalline TiO 2 thin films was evaluated as a potential biofouling protective coating. Contact angle measurements revealed that under UV-C light, the material evidenced a changing in wettability from hydrophobic to hydrophilic behavior, what is associated to the activation of photocatalytic reactions that is nocive for living beings on its surface. The effect of marine ambient on sample corroborates this conclusion, where after 6 months of exposure it was not sufficient for growing of biofouling on surface.

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Biofouling studies on nanoparticle-based metal oxide coatings on glass coupons exposed to marine environment

Cited by 51 publications

References 11 publications

Coating for preventing nonspecific adhesion mediated biofouling in salty systems: Effect of the electrostatic and van der waals interactions

Coating for preventing nonspecific adhesion mediated biofouling in salty systems: Effect of the electrostatic and van der waals interactions

Progress of marine biofouling and antifouling technologies

TiO2 thin Films for Biofouling Applications

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