Photocatalytic and antimicrobial Ag/ZnO nanocomposites for functionalization of textile fabrics

Ibănescu, Mariana; Muşat, Viorica; Textor, Torsten; Bădiliţă, Viorel; Mahltig, Boris

doi:10.1016/j.jallcom.2014.04.138

Cited by 122 publications

(38 citation statements)

References 20 publications

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“…For Ag/ZnO nanohybrids, as shown in Tables 3 and 4, light irradiation leads to an increase of the diameter of the inhibition zone for both S. aureus (at 8 mg/mL) and E. coli (at 8, 16, and 40 mg/mL) bacteria. Similarity, Ibanescu et al [64] reported the antimicrobial property of Ag/ZnO nanocomposites against both E. coli and M. luteus bacteria. Their finding indicates that small amounts of silver could significantly enhance antimicrobial activity.…”

Section: Characterization Of Prepared Ag/tio2 and Ag/zno Nanoparticlessupporting

confidence: 68%

Antibacterial Activity of TiO2- and ZnO-Decorated with Silver Nanoparticles

Nguyen¹,

Vu²,

Nguyen³

et al. 2019

J. Compos. Sci.

105

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This work emphasizes the use of the silver decorative method to enhance the antibacterial activity of TiO2 and ZnO nanoparticles. These silver-decorated nanoparticles (hybrid nanoparticles) were synthesized using sodium borohydride as a reducing agent, with the weight ratio of Ag precursors/oxide nanoparticles = 1:30. The morphology and optical properties of these hybrid nanoparticles were investigated using transmission electron microscopy (TEM), X-ray diffraction (XRD) patterns, and UV-Vis spectroscopy. The agar-well diffusion method was used to evaluate their antibacterial activity against both Staphylococcus aureus and Escherichia coli bacteria, with or without light irradiation. The TEM images indicated clearly that silver nanoparticles (AgNPs, 5–10 nm) were well deposited on the surface of nano-TiO2 particles (30–60 nm). In addition to this, bigger AgNPs (<20 nm) were dispersed on the surface of nano-ZnO particles (30–50 nm). XRD patterns confirmed the presence of AgNPs in both Ag-decorated TiO2 and Ag-decorated ZnO nanoparticles. UV-Vis spectra confirmed that the hybridization of Ag and oxide nanoparticles led to a shift in the absorption edge of oxide nanoparticles to the lower energy region (visible region). The antibacterial tests indicated that both oxide pure nanoparticles did not exhibit inhibitory effects against bacteria, with or without light irradiation. However, the presence of AgNPs in their hybrids, even at low content (<40 mg/mL), leads to a good antibacterial activity, and higher inhibition zones under light irradiation as compared to those in dark were observed.

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Section: Characterization Of Prepared Ag/tio2 and Ag/zno Nanoparticlessupporting

confidence: 68%

Antibacterial Activity of TiO2- and ZnO-Decorated with Silver Nanoparticles

Nguyen¹,

Vu²,

Nguyen³

et al. 2019

J. Compos. Sci.

105

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“…Recently, it has found that Zn 2+ co-doped with small amount of Ag + may lead to an obvious increase of the antibacterial ability [102] in comparison with single Zn 2+ . Zhang et al [66] fabricated micro-porous TiO 2 coatings co-doped with Zn 2+ and Ag NPs by MAO in the electrolyte composed of 0.1 M CA, 0.1 M ZA, 0.02 M β-GP, 6 g·L −1 Ag NPs and 0.25 g·L −1 sodium dodecyl benzene sulfonate for 0.5, 1.5, 2 and 4 min.…”

Section: Introduction Of Both Metal Nanoparticles and Metallic Compoumentioning

confidence: 99%

Review of Antibacterial Activity of Titanium-Based Implants’ Surfaces Fabricated by Micro-Arc Oxidation

Zhang

Wang

et al. 2017

Coatings

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Ti and its alloys are the most commonly-used materials for biomedical applications. However, bacterial infection after implant placement is still one of the significant rising complications. Therefore, the application of the antimicrobial agents into implant surfaces to prevent implant-associated infection has attracted much attention. Scientific papers have shown that inorganic antibacterial metal elements (e.g., Ag, Cu, Zn) can be introduced into implant surfaces with the addition of metal nanoparticles or metallic compounds into an electrolyte via micro-arc oxidation (MAO) technology. In this review, the effects of the composition and concentration of electrolyte and process parameters (e.g., voltage, current density, oxidation time) on the morphological characteristics (e.g., surface morphology, bonding strength), antibacterial ability and biocompatibility of MAO antimicrobial coatings are discussed in detail. Anti-infection and osseointegration can be simultaneously accomplished with the selection of the proper antibacterial elements and operating parameters. Besides, MAO assisted by magnetron sputtering (MS) to endow Ti-based implant materials with superior antibacterial ability and biocompatibility is also discussed. Finally, the development trend of MAO technology in the future is forecasted.

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“…This photocatalyst was applied for textile treatment. Long-term stable sols of ZnO and Ag/ZnO NPs were prepared and applied as liquid coating agent for textile treatment in combination with an inorganicorganic hybrid polymer binder sols prepared from the precursors 3-glycidyloxypropyltrimethoxysilane (GPTMS) and tetraethoxysilane (TEOS) [74]. The antimicrobial activity of the NPs applied on textile fabrics was tested against the Gram-negative bacterium Escherichia coli and Gram-positive Micrococcus luteus.…”

Section: Photocatalysismentioning

confidence: 99%

Advanced Oxidation Process Applied to Actinobacterium Disinfection

Brugnera¹,

Souza²,

Zanoni³

2016

Actinobacteria - Basics and Biotechnological Applications

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Actinobacteria, such as Mycobacterium, that constitute one oλ the main phyla within the bacteria and some μenus oλ this phylum are reported to be a pathoμen oλ or associated with nosocomial inλections and pseudoinλections promotinμ health risks λor immunocompromised people, particularly AIDS patients. They are also related to lower quality oλ surλace water due to their odor production Actinomycineae and Streptomycetaceae . These bacteria have been isolated λrom hospital water distribution systems, municipal drinkinμ water, λreshwater, and amonμ other environmental samples. Their bioλilm λormation, amoeba-associated liλestyle, and resistance to chlorine/ozone have been recoμnized as important λactors that contribute to persistence oλ these bacteria in water distribution systems. Research λor new disinλection methods that are able to promote complete inactivation oλ these bacteria has currently increased. Amonμ them is the use oλ advanced oxidation process that has demonstrated promisinμ results the production oλ ⋅OH radicals with hiμh oxidizinμ power are capable to kill bacteria and can also destroy the products μenerated λrom lyse cell. The μoal oλ the present work is to review the main processes based on advanced oxidation process that are able to promote actinobacterium disinλection. The λundaments oλ this process are also reviewed. Special emphasis was done λor the photocatalysis and photoelectrocatalysis methods and the phenomena occurrinμ at the electrode/electrolyte interλace.

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Photocatalytic and antimicrobial Ag/ZnO nanocomposites for functionalization of textile fabrics

Cited by 122 publications

References 20 publications

Antibacterial Activity of TiO2- and ZnO-Decorated with Silver Nanoparticles

Antibacterial Activity of TiO2- and ZnO-Decorated with Silver Nanoparticles

Review of Antibacterial Activity of Titanium-Based Implants’ Surfaces Fabricated by Micro-Arc Oxidation

Advanced Oxidation Process Applied to Actinobacterium Disinfection

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