Photocatalytic TiO2 on copper alloy for antimicrobial purposes

Chung, Chi-Jen; Chiang, Chung-Chien; Chen, Chang-Hsiung; Hsiao, C. H.; Lin, Hsin-I; Hsieh, Ping‐Yen; He, Ju-Liang

doi:10.1016/j.apcatb.2008.07.009

Cited by 24 publications

(13 citation statements)

References 20 publications

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“…Replacing steel with an aluminium alloy offers many advantages, especially the reduced weight of the components at maintained strength properties. For this reason, this material is increasingly used in dry and lubricated sliding contacts [ 11 , 23 , 24 , 25 , 26 , 27 , 28 , 29 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Temperature on the Tribological Properties of Selected Thermoplastic Materials Cooperating with Aluminium Alloy

2021

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This article concerns the tribological properties of three selected polymer materials: polyamide PA6, polyethylene PE-HD and polyetheretherketone composite PEEK/BG during sliding against aluminium alloy EN AW-2017A in the presence of hydraulic oil HLP 68. The tests were carried out under contact pressure p of 3.5–11 MPa at ambient temperature T ranging from −20 °C to +20 °C. The dependence of kinetic friction coefficient μk on the two parameters was determined through tribological tests carried out using a pin-on-disc tribometer. A five-level central composite rotatable design (CCRD) was adopted for the experiment. All the test results were statistically analysed. The microhardness of the surface of the polymeric material was measured before and after the friction process. The surface was also examined under SEM. Temperature and contact pressure have been found to have a significant effect on the tribological properties of the tested sliding pairs. Relative to the applied friction conditions, the surfaces after friction showed rather heavy signs of wear.

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Section: Introductionmentioning

confidence: 99%

Effect of Temperature on the Tribological Properties of Selected Thermoplastic Materials Cooperating with Aluminium Alloy

2021

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“…Two significant crystalline metal oxides, Anatase TiO 2 and orthorombic Nb 2 O 5 , of NPTNTZO(c) are two significant crystalline metal oxide that are beneficial to antibacterial efficacy and cellular activities. Anatase TiO 2 and orthorombic Nb 2 O 5 both are expected to provide antibacterial resistance and hydrophillicity because of their photocatalytic property 50 – 54 . These properties can be further enhanced under sufficient exposure to light 50 , 55 .…”

Section: Discussionmentioning

confidence: 99%

“…Anatase TiO 2 and orthorombic Nb 2 O 5 both are expected to provide antibacterial resistance and hydrophillicity because of their photocatalytic property 50 – 54 . These properties can be further enhanced under sufficient exposure to light 50 , 55 . Anatase TiO 2 also increase mechanical properties, such as abrasive wear resistance and corrosion resistance 56 .…”

Section: Discussionmentioning

confidence: 99%

Functional Studies of Anodic Oxidized β-Ti-28Nb-11Ta-8Zr Alloy for Mechanical, In-vitro and Antibacterial Capability

Lin

Kuo

et al. 2018

Sci Rep

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We developed an osseocompatible β-type Ti-28Nb-11Ta-8Zr (TNTZ) alloy that displays the excellent elastic modulus, cellular response, corrosion resistance and antibacterial capability demanded for bone-mimetic materials. The TNTZ alloy exhibited an elastic modulus of 49 GPa, which approximates that of human bones and prevent stress shielding effects. A further anodic oxidation and subsequent post-annealing modification formed a crystalline nanoporous TNTZ oxide layer (NPTNTZO(c)) on the alloy surface, potentially promoting interlocking with the extracellular matrix of bone cells and cell proliferation. Osteoblast viability tests also verified that NPTNTZO(c) enhanced cell growth more significantly than that of flat TNTZ. In addition, potentiodynamic polarization tests in Hanks’ balanced salt solution (HBSS) revealed that both TNTZ and NPTNTZO(c) exhibited better corrosion resistance than commercial pure titanium. Finally, NPTNTZO(c) reinforced with silver nanoparticles (NPTNTZO(c)/AgNPs) intensified the antibacterial efficiency against Pseudomonas aeruginosa, Staphylococcus aureus and Escherichia coli for 8 h with antibacterial efficiencies of 87.82%, 97.68%, and 93.90%, respectively, facilitating infection prevention during surgery and recovery stages.

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“…The threat of device-related infection has become publicized due to recent global events involving MRSA or enterovirus. Unexpected multiplication of germs or other bacteria poses a serious health problem [7,8].…”

Section: Introductionmentioning

confidence: 99%

“…These radicals eventually attack bacteria or viruses in terms of inhibiting DNA clonal processing and destroy coenzymes, enzymes in the self-regeneration, and enzymes in the respiratory system. As a result, the radical stops the reproduction of bacteria and molds, thereby inhibiting bacteria growth or preventing virus DNA multiplication [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

TiO₂and ZnO Nanoparticles in Photocatalytic and Hygienic Coatings

Jašková

Hochmannova²,

Vytřasová

2013

International Journal of Photoenergy

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Antimicrobial paints were based on the aqueous acrylic dispersion and various nanoparticles of zinc oxide and titanium dioxide. Antimicrobial ability and photoactivity were assumed in these paints. It was possible to observe the photoactivity thanks to change of organic dyes due to oxidative-reductive reaction. The best photocatalytic effect showed the coating containing the mixture of the first type of TiO2and nano-ZnO despite the fact that the first type of TiO2was not better in the photocatalytic test than the other types of TiO2. The agar dilution method was used to test antimicrobial ability. TheEscherichia coli,Pseudomonas aeruginosa,andStaphylococcus aureuswere chosen as test bacteria andPenicillium chrysogenumandAspergillus nigeras test molds. The antimicrobial effect of coatings with the mixture of the first type of TiO2and nano-ZnO was the best of all the tested samples.

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Photocatalytic TiO2 on copper alloy for antimicrobial purposes

Cited by 24 publications

References 20 publications

Effect of Temperature on the Tribological Properties of Selected Thermoplastic Materials Cooperating with Aluminium Alloy

Effect of Temperature on the Tribological Properties of Selected Thermoplastic Materials Cooperating with Aluminium Alloy

Functional Studies of Anodic Oxidized β-Ti-28Nb-11Ta-8Zr Alloy for Mechanical, In-vitro and Antibacterial Capability

TiO₂and ZnO Nanoparticles in Photocatalytic and Hygienic Coatings

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Photocatalytic TiO2 on copper alloy for antimicrobial purposes

Cited by 24 publications

References 20 publications

Effect of Temperature on the Tribological Properties of Selected Thermoplastic Materials Cooperating with Aluminium Alloy

Effect of Temperature on the Tribological Properties of Selected Thermoplastic Materials Cooperating with Aluminium Alloy

Functional Studies of Anodic Oxidized β-Ti-28Nb-11Ta-8Zr Alloy for Mechanical, In-vitro and Antibacterial Capability

TiO2and ZnO Nanoparticles in Photocatalytic and Hygienic Coatings

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Product

Resources

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TiO₂and ZnO Nanoparticles in Photocatalytic and Hygienic Coatings