TiO2 thin Films for Biofouling Applications

Soethe, Viviane Lilian; Delatorre, R. G.; Ramos, Eder Marlon; Parucker, Moisés Luiz

doi:10.1590/1980-5373-mr-2016-1116

Cited by 7 publications

(6 citation statements)

References 14 publications

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“…17 TiO 2 was considered as an antifouling material, showing antibacterial activity by releasing reactive species after sunlight mediated UV exposure. 18 CaCO 3 -containing siliconized FR materials were also developed but were shown to exhibit mass loss when immersed in water due to the dissolution of CaCO 3 , leading to increase in roughness, which promoted macrofouling colonization. 19 Self-cleaning graphene containing silicone nanocomposite coatings have also been considered to fabricate FR materials.…”

Section: ■ Introductionmentioning

confidence: 99%

“…However, both were found to exhibit fast leaching from the silicone matrix . TiO 2 was considered as an antifouling material, showing antibacterial activity by releasing reactive species after sunlight mediated UV exposure . CaCO 3 -containing siliconized FR materials were also developed but were shown to exhibit mass loss when immersed in water due to the dissolution of CaCO 3 , leading to increase in roughness, which promoted macrofouling colonization .…”

Section: Introductionmentioning

confidence: 99%

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Laboratory and Field Testing Assessment of Next Generation Biocide-Free, Fouling-Resistant Slippery Coatings

Basu

Bui

Ismail

et al. 2020

ACS Appl. Polym. Mater.

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Recent research efforts to combat marine biofouling have focused on foul-release coatings that are not harmful for the marine environment. Inspired by nature, Slippery Lubricant Infused Porous Surfaces (SLIPS) is a surface modification technology platform with excellent anti-adhesive and antifouling capacities. Pre-commercial coatings based on the SLIPS concept have demonstrated promising results as an environmentally friendly strategy to combat marine biofouling. Here, we investigated the resistance against marine biofouling of a range of recently developed, biocide-free SLIPS commercial coatings. The fouling resistance performance was evaluated both in the lab and in the field by conducting multi-month immersion tests in high-fouling pressure environments. In the lab, we show that the coatings are able to largely deter settlement of marine mussels -one of the most invasive marine biofouling organisms-and to weaken their interfacial adhesion strength. The key design parameter of slippery coatings to minimize fouling is the thickness of the entrapped lubricant overlayer, which can be assessed through depth-sensing nanoindentation measurements. We find that the surface energy (i.e. hydrophobic vs. hydrophilic), on the other hand, does not significantly influence the antifouling performance of these coatings in lab-scale studies. After immersion in the field in stagnant waters, all coatings exhibited efficient foul-release capacity against macrofoulers, whereas under stronger hydrodynamic flow conditions, only weakly attached biofilms were detected with a bacterial community composition that is independent on the surface energy. These results suggest that these large-scale paintable coatings exhibit a strong marine biofouling resistance with low maintenance costs, which represents an important advantage from a commercial application perspective.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Laboratory and Field Testing Assessment of Next Generation Biocide-Free, Fouling-Resistant Slippery Coatings

Basu

Bui

Ismail

et al. 2020

ACS Appl. Polym. Mater.

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“…2(a). To further enhance the antifouling effect by the UV-C radiation, the external surface of the quartz window was coated with a 50 nm-thin layer of transparent TiO 2 , which had been proved effective for biofouling control through photocatalytic oxide sterilization and biological adhesion reduction by enhanced hydrophobicity [48].…”

Section: A Underwater Imager Designmentioning

confidence: 99%

Development of a Buoy-Borne Underwater Imaging System for In Situ Mesoplankton Monitoring of Coastal Waters

Chen

Yang

et al. 2022

IEEE J. Oceanic Eng.

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This article reports the development of an underwater imaging system and its trial on a moored surface buoy for in situ plankton monitoring of coastal waters. The imager features shadowless white light illumination by an orthogonal lamellar lighting design, resulting in high-quality underwater darkfield color imaging of planktonic particles in the size range of ∼200 µm to 40 mm and effective reduction of zooplankton phototaxis. Through raft and buoy trials, 46 804 plankton and suspending particle images have been annotated through a human-machine mutually assisted effort into a data set with 90 categories. In the meanwhile, a deep learning model based on a triclassification VGGNet-11 and multiclassification ResNet-18 convolutional neuron networks in a two-staged hierarchy has also been trained and developed. The model has been applied with human supervision to semiautomatically analyze a total of 1 545 187 images obtained from a buoy trial for six months from late spring to early winter of 2020. The high temporal resolution results well documented the variation of the mesoplankton community structure in two time series of 38 days in summer and 54 days in autumn of the target sea region. In addition, the dominant species in the trial period and a zooplankton outbreak that had threatened the safety of the nearby nuclear power plants were quantitatively Manuscript

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“…Titanium oxides are semiconductor materials that have two main stoichiometries: TiO 2 and Ti 2 O 3 . Titanium dioxide TiO 2 has been extensively investigated in the last three decades due to its various technological applications in different areas such as catalysis, optical and electronic devices, biology 1,2,3 .…”

Section: Introductionmentioning

confidence: 99%

Nb-doped Ti2O3 Films Deposited Through Grid-Assisted Magnetron Sputtering on Glass Substrate: Electrical and Optical Analysis

et al. 2019

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Niobium doped dititanium trioxide (Ti 2 O 3 :Nb) films were deposited on glass substrates, through grid-assisted magnetron sputtering. The Ti 2 O 3 :Nb films were characterized by X-ray diffraction (XRD), electrical conductivity and optical properties. Film deposition was carried out in two different substrate bias modes: DC and unipolar pulsed. Results show that the negative-pulsed mode improves conductivity and crystallinity. The XRD results show peaks corresponding crystallographic planes of Ti 2 O 3. No niobium oxide Nb x O y peaks were observed, which indicates that niobium oxide if formed, is amorphous, and/or substituted Nb atoms remain in a solid solution within the Ti2O3 structure. It was observed that "as-deposited" Ti 2 O 3 :Nb films (without post annealing) are transparent and electrical conductive, with transmittance that reaches 60% in the visible light wavelength despite the considerable thickness of the film and a miminum resistivity of 2x10-2 Ω.cm which indicates that there is potential for application as Transparent Conductive Oxide (TCO).

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TiO2 thin Films for Biofouling Applications

Cited by 7 publications

References 14 publications

Laboratory and Field Testing Assessment of Next Generation Biocide-Free, Fouling-Resistant Slippery Coatings

Laboratory and Field Testing Assessment of Next Generation Biocide-Free, Fouling-Resistant Slippery Coatings

Development of a Buoy-Borne Underwater Imaging System for In Situ Mesoplankton Monitoring of Coastal Waters

Nb-doped Ti2O3 Films Deposited Through Grid-Assisted Magnetron Sputtering on Glass Substrate: Electrical and Optical Analysis

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