Effects of post-deposition heat treatment on nanostructured TiO2-C composite structure and antimicrobial properties

Gorthy, Rukmini; Wasa, Alibe; Land, Johann G.; Yang, Zhendi; Heinemann, Jack A.; Bishop, Courtney; Krumdieck, Susan

doi:10.1016/j.surfcoat.2021.126857

Cited by 4 publications

(1 citation statement)

References 47 publications

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“…As mentioned in the previous section, TiO2 semiconductors tend to excited charges (electrons and holes) once it irradiated by UV light which carries more than 3.2 eV, passing the bandgap energy of TiO2. Thus the charges triggered the generation of hydroxyl radical and oxygen radical that respond to the destruction of both cell wall and membrane of the microbes causing leakage of intracellular substances [2,35].…”

Section: Antimicrobial Performance Of Tio2-pdms Coatingmentioning

confidence: 99%

TiO2-PDMS Super Hydrophilic Coating with Self-Cleaning and Antimicrobial Properties

et al. 2021

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In this paper, self-synthesized TiO2 nanoparticle was used as a coating material with the addition of polydimethylsiloxane (PDMS) on the surface of the glass and ceramic substrate via spray coating. The self-cleaning properties of the coating with photocatalytic activity mechanism were observed under irradiation of black lamp as well as surface wettability. The antimicrobial properties and the morphology under a scanning electron microscope were also investigated. The results showed that the coating exhibited self-cleaning properties, as demonstrated by the photocatalytic degradation of methylene blue up to 80% and wettability as a super hydrophilic layer with a water contact angle less than 10° for both glass and ceramic substrate. The coating also shows an antimicrobial property by extending the radius of microbial growth up to 67% compared to the uncoated sample. 3% TiO2 addition with 50% w/w PDMS is the optimum coating ratio for maximum photocatalytic activity, super hydrophilic, and antimicrobial properties.

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Section: Antimicrobial Performance Of Tio2-pdms Coatingmentioning

confidence: 99%

TiO2-PDMS Super Hydrophilic Coating with Self-Cleaning and Antimicrobial Properties

et al. 2021

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Tuneable Wetting of Fluorine‐Free Superhydrophobic Films via Titania Modification to Enhance Durability and Photocatalytic Activity

Kalmoni,

Blackman,

Carmalt

2024

Adv Materials Inter

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Superhydrophobic photocatalytic self‐cleaning films are fabricated via aerosol‐assisted chemical vapor deposition (AACVD). First, superhydrophobic/SiO2 polymer films consisting of a combination of fatty acids, polydimethylsiloxane (PDMS) and SiO2 nanoparticles are deposited which displayed static water contact angles >160° and maintained superhydrophobicity after 300 tape peel cycles. The AACVD process is used to achieve a highly textured morphology required for superhydrophobicity. The surface properties are then modified by depositing a thin layer of TiO2 on the superhydrophobic coating via AACVD of titanium isopropoxide (TTIP). The deposited films are hydrophobic/superhydrophobic depending on the concentration of TTIP used in the deposition process. The resulting hybrid films exhibit enhanced photocatalytic activity relative to the uncoated superhydrophobic film, maintained hydrophobicity after exposure to toluene, and tolerated pencil hardness of up to “6H”. This multi‐layered approach allows to easily tune the wettability of the superhydrophobic film, which is challenging to do when the superhydrophobic and TiO2 precursor are deposited as a single one‐pot precursor.

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Cu/N co-doped TiO2 nanopowder with high antibacterial activity under visible light

2023

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Effects of post-deposition heat treatment on nanostructured TiO2-C composite structure and antimicrobial properties

Cited by 4 publications

References 47 publications

TiO2-PDMS Super Hydrophilic Coating with Self-Cleaning and Antimicrobial Properties

TiO2-PDMS Super Hydrophilic Coating with Self-Cleaning and Antimicrobial Properties

Tuneable Wetting of Fluorine‐Free Superhydrophobic Films via Titania Modification to Enhance Durability and Photocatalytic Activity

Cu/N co-doped TiO2 nanopowder with high antibacterial activity under visible light

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