Random array of inorganic nanoparticles on polymer surface for anti-biofouling property through cost-effective and high-performance dip-coating

Kim, Hyoung-Jun; Jeung, Do-Gak

doi:10.1016/j.colsurfb.2020.110788

Cited by 8 publications

(6 citation statements)

References 41 publications

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“…The surface roughness is increased in photocatalytic coatings over time due to radical assisted photo‐degradation of binders and other paint auxiliaries [38] . As a result, the chemical interactions become weak, loosening the pigment/TiO 2 particles from the coating.…”

Section: Resultsmentioning

confidence: 99%

“…The surface roughness is increased in photocatalytic coatings over time due to radical assisted photo-degradation of binders and other paint auxiliaries. [38] As a result, the chemical interactions become weak, loosening the pigment/TiO 2 particles from the coating. The loosen particles form aggregates and irregularities on the coating surface, resulting in an increase in surface roughness over time.…”

Section: Chemistryselectmentioning

confidence: 99%

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Photocatalytic and Protective Thin Films for Enhanced Self‐cleaning Activity and Durability of Painted Steel Roofings

et al. 2023

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Fouling of painted steel roofings over time due to biological organisms and other pollutants is a well-known aesthetic, functional and environmental problem that highlights the importance of developing greener self-cleaning technologies for roofing applications. Accordingly, a series of novel photocatalytic coating systems have been developed in this study by introducing a copolymer of tetratethyl orthosilane and methyltrimethoxysilane as the photochemically stable binder and intermediate protective layer. Visible light active carbon doped titanium dioxide and surface modified nano titanium dioxide with anatase-rutile hetero junctions were used as the semiconductor photocataysts. The concentration of titanium dioxide was set as 10 %, 25 % and 40 % by weight of the dried photocatalytic film. Methylene blue photoderadation reaction kinetics and antimicrobial assays were used as the key measures of assessing the self-cleaning performance. The morphological and chemical composition changes were analyzed as a function of time using scanning electron microscopic and spectroscopic techniques as a measure of service life of these putative photocatalytic coating systems. According, a high degree of self-cleaning activity was observed in these novel photocatalytic coating systems having 10 % (w/w) to 40 % (w/w) titanium dioxide loading compared to the painted steel roofing control sample. A complete eradication and 2-3 orders of log reduction were achieved respectively against E.coli bacteria and A.niger and Cladosporium fungies. The introduction of the intermediate polysiloxane protective layer has significantly enhanced both the self-cleaning activity and service life, minimizing the diffusion of photogenerated reactive oxygen species into subsequent underneath paint layers. The photocatalytic self-cleaning activity and the rate of photodegradation have been increased with titanium dioxide concentration. The coating system with 10 % (w/w) surface modified nano titanium dioxide loading having the intermediate protective layer was found to be the optimum coating formulation to obtain a high degree of self-cleaning activity at a minimum rate of photodegradation in this study.

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Section: Resultsmentioning

confidence: 99%

Section: Chemistryselectmentioning

confidence: 99%

Photocatalytic and Protective Thin Films for Enhanced Self‐cleaning Activity and Durability of Painted Steel Roofings

et al. 2023

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“…Different nanoparticles such as magnetic graphene oxide [5], nano-silica and nano-ZnO [8], clay and TiO 2 NPs [14], ZnO NPs [15], ZnO and TiO 2 NPs [16], and ZnO-AgNPs [17] have been used to solve the problem of fouling and reduce the interaction of microbes with the surface of the immersed substrate. Nanocoatings have been deployed to prevent adhesion and accumulation of harmful microorganisms and marine fouling organisms on immersed structures like ship hulls.…”

Section: Anti-foulingmentioning

confidence: 99%

“…The results of the antifouling property revealed that ZnONPs provided inhibition against bacteria, while TiO 2 NPs did not. In addition, Kim et al [14] investigated the effects of NPs in enhancing the antifouling property of the Polyurethane (PU) coatings system. Two different types of inorganic nanoparticles namely, montmorillonite and TiO 2 were mixed with PU binder solution and applied onto the substrate which subsequently did not provide a regular nanopatterning.…”

Section: Anti-foulingmentioning

confidence: 99%

“…The NPs made random nanopattern on substrate film and the surface of bare PU film did not show considerable protrusion using atomic force microscopy. The biofouling resistant property of film was analyzed by comparing the amount of mucins adhesion on the films and it was discovered that inorganic coated films exhibited more than 80% of biofouling resistant effect when compared to bare PU film [14].…”

Section: Anti-foulingmentioning

confidence: 99%

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Olawore

Asafa

Oladosu

et al. 2021

Nano Plus: Sci. Tech. Nanomat.

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Nanoparticles-modified paints have shown huge potentials in a broad range of functionalities like surface protection, antifouling, corrosion resistance, self-cleaning, slip resistance, abrasion resistance among others. Consequently, they have been deployed for several industrial applications including pipelines, buildings, automobiles, electronics, among others. To further enhance their functionalities, paint industries have expended huge resources on research and development of advanced paints that are compatible and appropriate for today's hostile environments. Studies have been conducted on the utilization of degradable biocides such as zinc oxide nanoparticles (ZnONPs), silver nanoparticles (AgNPs), copper nanoparticles (CuNPs), photocatalytic-active nano-titanium dioxide nanoparticles (TiO 2 NPs), and silica dioxide nanoparticles (SiO 2 NPs) as major additives in paints. These additives are designed to offer improved surface protection against microbial, physical, and chemical deteriorations as well as enhanced scratch resistance. However, the addition of nanoparticles to paints is not without its demerits. Nanoparticles can agglomerate within the paint matrix leading to poor surface protection. In addition, the health and safety concerns from human exposure to emissions of nanoparticles must be adequately addressed. A few reported studies on the toxicology of nanoparticles are either short-termed or having variant or inconclusive results. This paper reports a critical assessment of nanoparticles as additives in paints. Extensive characterization of nanoparticle-modified paints is reported while the implications on the environment are also explored. New directions, targeting enhanced functionalities and lower toxicity, are proposed.

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The influence of gradient patterned design on nanoshapes deposition

Ahmad

2025

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Random array of inorganic nanoparticles on polymer surface for anti-biofouling property through cost-effective and high-performance dip-coating

Cited by 8 publications

References 41 publications

Photocatalytic and Protective Thin Films for Enhanced Self‐cleaning Activity and Durability of Painted Steel Roofings

Photocatalytic and Protective Thin Films for Enhanced Self‐cleaning Activity and Durability of Painted Steel Roofings

Untitled

The influence of gradient patterned design on nanoshapes deposition

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