Antimicrobial surfaces with self-cleaning properties functionalized by photocatalytic ZnO electrosprayed coatings

Valenzuela, Laura; Iglesias, Ana María; Faraldos, Marisol; Bahamonde, A.; Rosal, Roberto

doi:10.1016/j.jhazmat.2019.02.073

Cited by 63 publications

(26 citation statements)

References 68 publications

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“…For instance, Teisala et al developed a nanostructured TiO 2 coating deposited on top of paperboard using liquid flame spray with a roll-to-roll setup at ambient pressure, which has potentials in using as self-cleaning surfaces (Ref 114 ). Valenzuela et al prepared photoactive coatings using sol–gel ZnO suspensions through electro-spraying on glass substrates, and self-cleaning antimicrobial functions were reported (Ref 115 ). The electro-sprayed surfaces displayed antibacterial activity against Staphylococcus aureus with a reduction rate of over 99.5%.…”

Section: Thermal-sprayed Photocatalytic Coatingsmentioning

confidence: 99%

Thermal-Sprayed Photocatalytic Coatings for Biocidal Applications: A Review

et al. 2020

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There have been ever-growing demands for disinfection of water and air in recent years. Efficient, eco-friendly, and cost-effective methods of disinfection for pathogens are vital to the health of human beings. The photocatalysis route has attracted worldwide attention due to its highly efficient oxidative capabilities and sustainable recycling, which can be used to realize the disinfection purposes without secondary pollution. Though many studies have comprehensively reviewed the work about photocatalytic disinfection, including design and fabrication of photocatalytic coatings, inactivation mechanisms, or practical applications, systematic reviews about the disinfection photocatalysis coatings from fabrication to effort for practical use are still rare. Among different ways of fabricating photocatalytic materials, thermal spray is a versatile surface coating technique and competitive in constructing large-scale functional coatings, which is a most promising way for the future environmental purification, biomedical and life health applications. In this review, we briefly introduced various photocatalytic materials and corresponding inactivation mechanisms for virus, bacteria and fungus. We summarized the thermal-sprayed photocatalysts and their antimicrobial performances. Finally, we discussed the future perspectives of the photocatalytic disinfection coatings for potential applications. This review would shed light on the development and implementation of sustainable disinfection strategies that is applicable for extensive use for controlling pathogens in the near future.

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Section: Thermal-sprayed Photocatalytic Coatingsmentioning

confidence: 99%

Thermal-Sprayed Photocatalytic Coatings for Biocidal Applications: A Review

et al. 2020

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“…Among these additives, zinc oxide nanoparticles (ZnO NPs) are of particular interest, due to their low cost, biocompatibility and biodegradability for environmental applications and to their hexagonal prism shape, which allows an increase in the surface roughness [16,17]. Therefore, this nanomaterial can be beneficial to obtained multifunctional materials due to its numerous properties, such as water resistance, antibacterial effect, UV blocking, flame retardancy, corrosion inhibitor and electrical conductivity [18][19][20][21][22]. Gao et al [23] described the preparation of a superhydrophobic coating based on SiO 2 -coated ZnO nanorod and obtained a WCA greater than 150° (as high as 157°).…”

Section: Introductionmentioning

confidence: 99%

Superhydrophobic cotton fabrics based on ZnO nanoparticles functionalization

et al. 2019

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In the present work, 100% cotton knitted fabrics were functionalized with ZnO nanoparticles, in order to enhance the hydrophobic properties of the fibers surface. The incorporation methods of ZnO NPs and different types of cotton samples (including polymer coated, and uncoated with and without a nonionic pretreatment) were evaluated, in order to understand the influence in the hydrophobicity values. Cotton fabrics with and without NPs were characterized by ground-state diffuse reflectance, field emission scanning electron microscopy and energy-dispersive spectroscopy, attenuated total reflectance-Fourier transform infrared spectroscopy and water contact angle (WCA). The best results were obtained when the polymer-coated fabric was functionalized using a precursor concentration of 0.2 M, exhibiting superhydrophobic behavior with static WACs of more than 150°. Although pretreated and untreated ZnO-functionalized cotton fabrics had a slightly lower wettability, they showed interesting results, with improvements in WCA from 116° to 143°. In summary, this work demonstrates that the ZnO NPs have a huge potential to be used as surface finishings for the development of easy cleaning fibrous structures.

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“…Developing cost-effective and simple technologies for removing harmful pollutant is one of the most attentive matters to research recently [1][2][3]. Photocatalysis is considered a promising technique to treat contaminated water because the photocatalysis process is eco-friendly and economical and is capable of degrading several organic dyes or pollutants [1,[4][5][6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

In Situ g‐C₃N₄@Zno Nanocomposite: One‐Pot Hydrothermal Synthesis and Photocatalytic Performance under Visible Light Irradiation

Thi

Neto

Van

et al. 2021

Advances in Materials Science and Engineering

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In situ g-C3N4@ZnO nanocomposites (with 0, 1, 3, 5, and 7 wt.% of g-C3N4 in nanocomposite) were synthesized via a one-pot hydrothermal method using precursors of urea, zinc nitrate hexahydrate, and hexamethylenetetramine. The g-C3N4@ZnO nanocomposites were characterized by X-ray diffraction, scanning electron microscope, diffuse reflectance spectroscopy, and photoluminescence spectroscopy. The photocatalyst activity of g-C3N4@ZnO nanocomposites was evaluated via methylene blue degradation experiment under visible light irradiation. The g-C3N4@ZnO nanocomposites showed an enhancement in photocatalytic activity in comparison to pure ZnO which increased with the g-C3N4 content (1, 3, 5, and 7 wt.%) in nanocomposites. The photocatalytic activity reached the highest efficiency of 96.8% when the content of g-C3N4 was 7.0 wt.%. Nanocomposite having 7.0 wt.% of g-C3N4 also showed good recyclability with degradation efficiency higher than 90% even in the 4th use. The improvement of photocatalytic activity could be attributed to the adsorption ability and effective separation of electron-hole pairs between g-C3N4 and ZnO. This work implies a simple method to in situ prepare the nanocomposite material of g-C3N4 and semiconductors oxide for photocatalyst applications with high efficiency and good recyclability.

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Antimicrobial surfaces with self-cleaning properties functionalized by photocatalytic ZnO electrosprayed coatings

Cited by 63 publications

References 68 publications

Thermal-Sprayed Photocatalytic Coatings for Biocidal Applications: A Review

Thermal-Sprayed Photocatalytic Coatings for Biocidal Applications: A Review

Superhydrophobic cotton fabrics based on ZnO nanoparticles functionalization

In Situ g‐C₃N₄@Zno Nanocomposite: One‐Pot Hydrothermal Synthesis and Photocatalytic Performance under Visible Light Irradiation

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Antimicrobial surfaces with self-cleaning properties functionalized by photocatalytic ZnO electrosprayed coatings

Cited by 63 publications

References 68 publications

Thermal-Sprayed Photocatalytic Coatings for Biocidal Applications: A Review

Thermal-Sprayed Photocatalytic Coatings for Biocidal Applications: A Review

Superhydrophobic cotton fabrics based on ZnO nanoparticles functionalization

In Situ g‐C3N4@Zno Nanocomposite: One‐Pot Hydrothermal Synthesis and Photocatalytic Performance under Visible Light Irradiation

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In Situ g‐C₃N₄@Zno Nanocomposite: One‐Pot Hydrothermal Synthesis and Photocatalytic Performance under Visible Light Irradiation