Antimicrobial efficacy of photocatalytic TiO2 coatings prepared by arc ion plating

Chung, Chi-Jen; Lin, Hsin-I; He, Ju-Liang

doi:10.1016/j.surfcoat.2007.07.077

Cited by 37 publications

(12 citation statements)

References 15 publications

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“…One of the strategies is the modification of implant surfaces [7,15,16] with the aim of eliminating the infection of biomedical implants [6,17], and also improving their chemical, mechanical, and tribological characteristics, important features in biomedical devices. The use of nanocomposite protective films, based on the combination of various transition metal carbides, nitrides and carbonitrides, has already been reported [18][19][20][21][22][23].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Silver activation on thin films of Ag–ZrCN coatings for antimicrobial activity

Ferreri

Galindo

Palácio

et al. 2015

Materials Science and Engineering: C

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Nowadays, with the increase of elderly population and related health problems, knee and hip joint prosthesis are being widely used worldwide. However, failure of these invasive devices occurs in a high percentage thus demanding the revision of the chirurgical procedure. Within the reasons of failure, microbial infections, either hospital or subsequently-acquired, contribute in high number to the statistics. Staphylococcus epidermidis (S. epidermidis) has emerged as one of the major nosocomial pathogens associated with these infections. Silver has a historic performance in medicine due to its potent antimicrobial activity, with a broad-spectrum on the activity of different types of microorganisms. Consequently, the main goal of this work was to produce Ag-ZrCN coatings with antimicrobial activity, for the surface modification of hip prostheses. Thin films of ZrCN with several silver concentrations were deposited onto stainless steel 316 L, by DC reactive magnetron sputtering, using two targets, Zr and Zr with silver pellets (Zr+Ag target), in an atmosphere containing Ar, C2H2 and N2. The antimicrobial activity of the modified surfaces was tested against S. epidermidis and the influence of an activation step of silver was assessed by testing samples after immersion in a 5% (w/v) NaClO solution for 5 min. The activation procedure revealed to be essential for the antimicrobial activity, as observed by the presence of an inhibition halo on the surface with 11 at.% of Ag. The morphology analysis of the surface before and after the activation procedure revealed differences in silver distribution indicating segregation/diffusion of the metallic element to the film's surface. Thus, the results indicate that the silver activation step is responsible for an antimicrobial effect of the coatings, due to silver oxidation and silver ion release.

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Section: Accepted Manuscriptmentioning

confidence: 99%

Silver activation on thin films of Ag–ZrCN coatings for antimicrobial activity

Ferreri

Galindo

Palácio

et al. 2015

Materials Science and Engineering: C

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“…The values of antibacterial activity (R) of the blends were calculated by the following equation (1). 23 …”

Section: Methodsmentioning

confidence: 99%

Improvement of mechanical-antibacterial performances of AR/PMMA with TiO₂ and HPQM treated by N-2(aminoethyl)-3-aminopropyl trimethoxysilane

Tangudom

Martín-Fabiani

Prapagdee

et al. 2020

Journal of Reinforced Plastics and Composites

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The mechanical and antibacterial properties of acrylic rubber/poly(methyl methacrylate) (AR/PMMA) blend at 10 to 50 wt% of AR content with non-treated and treated titanium dioxide (TiO2) and 2-Hydroxypropyl-3-piperazinyl-quinoline carboxylic acid methacrylate (HPQM) by N-2(aminoethyl)-3-aminopropyl trimethoxysilane were studied. The antibacterial property against Escherichia coli was evaluated. The results found that the mechanical properties of ARt-TiO2/PMMA and ARt-HPQM/PMMA blend were higher than that of the ARTiO2/PMMA and ARHPQM/PMMA blend. For antibacterial property, the ARHPQM/PMMA and ARt-HPQM/PMMA blend could act as the antibacterial material, while the ARTiO2/PMMA blend did not show. However, the ARt-TiO2/PMMA blend could inhibit bacterial cell growth with 10 to 30 wt% of AR content. The recommended compositions of ARt-TiO2/PMMA blend, which improved both mechanical and antibacterial properties, were 10 to 30 wt% of AR and were 10 to 50 wt% of AR for ARt-HPQM/PMMA. Moreover, the UV radiation increased the antibacterial properties by the destruction of the interaction in treated TiO2 and HPQM and improved the antibacterial performance of ARt-TiO2/PMMA and ARt-HPQM/PMMA blend.

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“…Anatase has stronger antimicrobial and photocatalytic activity than rutile [1][2][3]. Clays, such as montmorillonite, rectorite and kaolinite have attracted much attention in recent years for their applicability, in the waste water treatment.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Photocatalytic Activity of Calcareous/TiO2 Nanocomposites under UV Light Irradiation using Methylene Blue Dye

Mariselvi¹,

Kumar²,

Veeraputhiran³

et al. 2019

JNST

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Titanium dioxide (TiO2) occurs in three basic modification anatase, rutile and brookite. Anatase is widely studied due to its very good photocatalytic properties, which may be used in additives to paints and construction materials, degradation of organic pollutants in air and water etc.,. In the present work, the synthesis, characterization and photocatalytic activity of calcareous/TiO2 nanocomposites on the removal of methylene blue dye were carried out by using solvothermal method. Synthesized nanocomposites was characterized by using XRD, SEM, EDAX and UV-Vis absorption spectroscopy. The XRD pattern reveals the course of composites formation and calcareous/TiO2 nanocomposites containing anatase phase of TiO2 were found. The higher photocatalytic activity was obtained in anatase phase of TiO2 than rutile. It is concluded that the higher photocatalytic activity in anatase is due to parameters like band gap, number of hydroxyl groups, surface area and porosity of catalyst. The spherical morphology of calcareous/TiO2 nanocomposites was observed in SEM analysis. The photocatalytic efficiency of various operational parameters like concentration, time, catalyst loading and pH on methylene blue dye was also studied.

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Antimicrobial efficacy of photocatalytic TiO2 coatings prepared by arc ion plating

Cited by 37 publications

References 15 publications

Silver activation on thin films of Ag–ZrCN coatings for antimicrobial activity

Silver activation on thin films of Ag–ZrCN coatings for antimicrobial activity

Improvement of mechanical-antibacterial performances of AR/PMMA with TiO₂ and HPQM treated by N-2(aminoethyl)-3-aminopropyl trimethoxysilane

Synthesis, Characterization and Photocatalytic Activity of Calcareous/TiO2 Nanocomposites under UV Light Irradiation using Methylene Blue Dye

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Antimicrobial efficacy of photocatalytic TiO2 coatings prepared by arc ion plating

Cited by 37 publications

References 15 publications

Silver activation on thin films of Ag–ZrCN coatings for antimicrobial activity

Silver activation on thin films of Ag–ZrCN coatings for antimicrobial activity

Improvement of mechanical-antibacterial performances of AR/PMMA with TiO2 and HPQM treated by N-2(aminoethyl)-3-aminopropyl trimethoxysilane

Synthesis, Characterization and Photocatalytic Activity of Calcareous/TiO2 Nanocomposites under UV Light Irradiation using Methylene Blue Dye

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Improvement of mechanical-antibacterial performances of AR/PMMA with TiO₂ and HPQM treated by N-2(aminoethyl)-3-aminopropyl trimethoxysilane