Deposition of Photocatalytic TiO2 Coating by Modifying the Solidification Pathway in Plasma Spraying

Wen, Kui; Liu, Min; Liu, Xuezhang; Deng, Chunming; Zhou, Kesong

doi:10.3390/coatings7100169

Cited by 16 publications

(7 citation statements)

References 24 publications

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“…As is known from [41,42], the photovoltaic performance of the DSSCs is connected to the phase composition and the surface features of the TiO 2 nanoparticles. Moreover, the amount of dye absorbed by the photoanode can be monitored by the size and surface potential of the particles.…”

Section: Resultsmentioning

confidence: 99%

Thin Film Fabrication by Pulsed Laser Deposition from TiO2 Targets in O2, N2, He, or Ar for Dye-Sensitized Solar Cells

et al. 2022

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Active semiconductor layers of TiO2 were synthesized via pulsed laser deposition in He, N2, O2, or Ar to manufacture DSSC structures. As-prepared nanostructured TiO2 coatings grown on FTO were photosensitized by the natural absorption of the N719 (Ruthenium 535-bis TBA) dye to fabricate photovoltaic structures. TiO2 photoanode nanostructures with increased adsorption areas of the photosensitizer (a combination with voluminous media) were grown under different deposition conditions. Systematic SEM, AFM, and XRD investigations were carried out to study the morphological and structural characteristics of the TiO2 nanostructures. It was shown that the gas nature acts as a key parameter of the architecture and the overall performance of the deposited films. The best electro-optical performance was reached for photovoltaic structures based on TiO2 coatings grown in He, as was demonstrated by the short-circuit current (Isc) of 5.40 mA, which corresponds to the higher recorded roughness (of 44 ± 2.9 nm RMS). The higher roughness is thus reflected in a more efficient and deeper penetration of the dye inside the nanostructured TiO2 coatings. The photovoltaic conversion efficiency (η) was 1.18 and 2.32% for the DSSCs when the TiO2 coatings were deposited in O2 and He, respectively. The results point to a direct correlation between the electro-optical performance of the prepared PV cells, the morphology of the TiO2 deposited layers, and the crystallinity features, respectively.

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Section: Resultsmentioning

confidence: 99%

Thin Film Fabrication by Pulsed Laser Deposition from TiO2 Targets in O2, N2, He, or Ar for Dye-Sensitized Solar Cells

et al. 2022

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“…The electron pair-deficient oxygen vacancy was suggested to be able to react with Ti 4+ -ions to form Ti 3+ centers, by Serpone et al [43]. The amount of vacancies was reported to be one-half of the Fe(III) found in the TiO 2 (Ti 4+ ) network [44][45][46][47][48][49]. Figure 5 shows the diffuse reflection spectroscopy (DRS) spectra in Kubelka-Munk units for TiO2-PE, FeOx-PE, (a) sequentially sputtered TiO2/FeOx-PE films, and (b) co-sputtered TiO2-FeOx-PE films.…”

Section: Sputtering Of Tio2-fe2o3 Microstructure To Accelerate the Bamentioning

confidence: 99%

Mechanisms of the Antibacterial Effects of TiO2–FeOx under Solar or Visible Light: Schottky Barriers versus Surface Plasmon Resonance

Kiwi

Rtimi

2018

Coatings

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This study reports the significant mechanistic difference between binary-oxide antibacterial films with the same composition but different microstructures. Binary TiO2-FeOx films were found to present a faster bacterial inactivation kinetics under visible light irradiation than each single oxide acting independently. The interaction between the film active surface species and the bacteria within the disinfection period was followed by X-ray photoelectron spectroscopy (XPS) and provided the evidence for a redox catalysis taking place during the bacterial inactivation time. The optical and surface properties of the films were evaluated by appropriate surface analytical methods. A differential mechanism is suggested for each specific microstructure inducing bacterial inactivation. The surface FeOx plasmon resonance transferred electrons into the conduction band of TiO2 because of the Schottky barrier after Fermi level equilibration of the two components. An electric field at the interface between TiO2 and FeOx, favors the separation of the photo-generated charges leading to a faster bacterial inactivation by TiO2–FeOx compared to the bacterial inactivation kinetics by each of the single oxides.

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“…Titanium dioxide (TiO 2 ) coatings are widely used in biomedical applications and self‐cleaning coatings owing to their wear and corrosion resistance, and biocompatibility 1–4 . However, TiO 2 coatings have drawbacks, such as failure caused by bacterial infection in biomedical applications, 5 and TiO 2 photocatalytic activity is limited within the visible region owing to low sunlight absorption 6–8 .…”

Section: Introductionmentioning

confidence: 99%

Plasma‐sprayed TiO₂ coatings: Hydrophobicity enhanced by ZnO additions

Yusuf

Ghazali

Juoi

et al. 2022

Int J Applied Ceramic Tech

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Titanium dioxide (TiO2) powder mixed individually with 10 and 30 weight percentage (wt%) ZnO was thermally sprayed onto a grade B API 5 L carbon steel substrate by atmospheric plasma spraying. The effect of the addition of ZnO (10 wt% and 30 wt%) on the microstructures and wettability properties of the TiO2/ZnO coatings was investigated. The characterization of the coatings was carried out using scanning electron microscopy, X‐ray diffraction (XRD), laser confocal microscope, and sessile droplet system. The XRD analysis of the coating revealed that the anatase phase of TiO2 in the powder state transformed into rutile phases for the produced TiO2/ZnO coatings. Surface microstructure analysis revealed that the coatings had typical micro‐roughened surfaces of plasma spraying products. The coating with 30 wt% ZnO produced a coating with remarkable pores and microcracks compared with the TiO2 coating and coating with 10 wt% ZnO. Additionally, the increase in the wt% of ZnO increased the surface roughness value of the produced coatings and substantially changed the wettability properties of the TiO2 coating from hydrophilic to hydrophobic.

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Deposition of Photocatalytic TiO2 Coating by Modifying the Solidification Pathway in Plasma Spraying

Cited by 16 publications

References 24 publications

Thin Film Fabrication by Pulsed Laser Deposition from TiO2 Targets in O2, N2, He, or Ar for Dye-Sensitized Solar Cells

Thin Film Fabrication by Pulsed Laser Deposition from TiO2 Targets in O2, N2, He, or Ar for Dye-Sensitized Solar Cells

Mechanisms of the Antibacterial Effects of TiO2–FeOx under Solar or Visible Light: Schottky Barriers versus Surface Plasmon Resonance

Plasma‐sprayed TiO₂ coatings: Hydrophobicity enhanced by ZnO additions

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Deposition of Photocatalytic TiO2 Coating by Modifying the Solidification Pathway in Plasma Spraying

Cited by 16 publications

References 24 publications

Thin Film Fabrication by Pulsed Laser Deposition from TiO2 Targets in O2, N2, He, or Ar for Dye-Sensitized Solar Cells

Thin Film Fabrication by Pulsed Laser Deposition from TiO2 Targets in O2, N2, He, or Ar for Dye-Sensitized Solar Cells

Mechanisms of the Antibacterial Effects of TiO2–FeOx under Solar or Visible Light: Schottky Barriers versus Surface Plasmon Resonance

Plasma‐sprayed TiO2 coatings: Hydrophobicity enhanced by ZnO additions

Contact Info

Product

Resources

About

Plasma‐sprayed TiO₂ coatings: Hydrophobicity enhanced by ZnO additions