AI Chat Paper
Note: Please note that the following content is generated by AMiner AI. SciOpen does not take any responsibility related to this content.
{{lang === 'zh_CN' ? '文章概述' : 'Summary'}}
{{lang === 'en_US' ? '中' : 'Eng'}}
Chat more with AI
Powered by AMiner. Clicking this button will take you away from SciOpen.
Home Journal of Advanced Ceramics Article
PDF (3 MB)
Cite
EndNote(RIS) BibTeX
Collect
Submit Manuscript AI Chat Paper
Show Outline
Outline
Show full outline
Hide outline
Outline
Show full outline
Hide outline
Research Article | Open Access

Structural and photocatalytic characteristics of TiO2 coatings produced by various thermal spray techniques

Pavel CTIBORa,*( ), Vaclav STENGLb, Zdenek PALAa
Institute of Plasma Physics, ASCR, v.v.i., Za Slovankou 3, Prague, Czech Republic
Institute of Inorganic Chemistry, ASCR, v.v.i., Husinec-Rez, Czech Republic
Show Author Information

Abstract

Titanium dioxide (TiO2) was elaborated by four different thermal spray techniques—(i) plasma spraying using a water-stabilized torch, (ii) plasma spraying using a gas-stabilized torch, (iii) high velocity oxy–fuel gun, and (iv) oxy–acetylene flame. The porosity of the coatings was studied by optical microscopy, nano-structural features by scanning electron microscopy (SEM), phase composition by X-ray diffraction (XRD); the microhardness, surface roughness and wear resistance were evaluated. The diffuse reflectance was measured by ultra-violet/visible/near-infrared (UV/Vis/NIR) scanning spectrophotometer. The kinetics of photocatalytic degradation of gaseous acetone was measured under a UV lamp with 365 nm wavelength. After all the applied spray processes, the transformation of anatase phase from the initial powders to rutile phase in the coatings occurred. In spite of this transformation, all the coatings exhibited certain photocatalytic activity, which correlated well with their band gap energy calculated from reflectivity. All the coatings offer relatively good mechanical properties and can serve as robust photocatalysts.

Keywords

plasma sprayinghigh velocity oxy–fuel (HVOF) sprayingflame sprayingtitanium dioxide (TiO2)photocatalysisband gap

References

[1]
Li D, Haneda H, Hishita S, et al. Fluorine-doped TiO2 powders prepared by spray pyrolysis and their improved photocatalytic activity for decomposition of gas-phase acetaldehyde. J Fluorine Chem 2005, 126: 69-77.
Crossref Google Scholar
[2]
Matsuda S, Hatano H, Tsutsumi A. Ultrafine particle fluidization and its application to photocatalytic NOx treatment. Chem Eng J 2001, 82: 183-188.
Crossref Google Scholar
[3]
Herrmann J-M. Heterogeneous photocatalysis: Fundamentals and applications to the removal of various types of aqueous pollutants. Catal Today 1999, 53: 115-129.
Crossref Google Scholar
[4]
Dumitriu D, Bally AR, Ballif C, et al. Photocatalytic degradation of phenol by TiO2 thin films prepared by sputtering. Appl Catal B: Environ 2000, 25: 83-92.
Crossref Google Scholar
[5]
Colmenares-Angulo J, Zhao S, Young C, et al. The effects of thermal spray technique and post-deposition treatment on the photocatalytic activity of TiO2 coatings. Surf Coat Technol 2009, 204: 423-427.
Crossref Google Scholar
[6]
Ctibor P, Pala Z, Sedláček J, et al. Titanium dioxide coatings sprayed by a water-stabilized plasma gun (WSP) with argon and nitrogen as the powder feeding gas: Differences in structural, mechanical and photocatalytic behavior. J Therm Spray Techn 2012, 21: 425-434.
Crossref Google Scholar
[7]
Ctibor P, Štengl V, Píš I, et al. Plasma sprayed TiO2: The influence of power of an electric supply on relations among stoichiometry, surface state and photocatalytic decomposition of acetone. Ceram Int 2012, 38: 3453-3458.
Crossref Google Scholar
[8]
Ctibor P, Stengl V, Zahalka F, et al. Microstructure and performance of titanium oxide coatings sprayed by oxygen–acetylene flame. Photochem Photobiol Sci 2011, 10: 403-407.
Crossref Google Scholar
[9]
Lima RS, Marple BR. Process–property–performance relationships for titanium dioxide coatings engineered from nanostructured and conventional powders. Mater Design 2008, 29: 1845-1855.
Crossref Google Scholar
[10]
Fauchais P, Vardelle A, Dussoubs B. Quo vadis thermal spray? J Therm Spray Techn 2001, 10: 44-66.
Crossref Google Scholar
[11]
Bozorgtabar M, Rahimipour M, Salehi M. Novel photocatalytic TiO2 coatings produced by HVOF thermal spraying process. Mater Lett 2010, 64: 1173-1175.
Crossref Google Scholar
[12]
Jeffery B, Peppler M, Lima RS, et al. Bactericidal effects of HVOF-sprayed nanostructured TiO2 on pseudomonas aeruginosa. J Therm Spray Techn 2010, 19: 344-349.
Crossref Google Scholar
[13]
George N, Mahon M, McDonald A. Bactericidal performance of flame-sprayed nanostructured titania–copper composite coatings. J Therm Spray Techn 2010, 19: 1042-1053.
Crossref Google Scholar
[14]
Skopp A, Kelling N, Woydt M, et al. Thermally sprayed titanium suboxide coatings for piston ring/cylinder liners under mixed lubrication and dry-running conditions. Wear 2007, 262: 1061-1070.
Crossref Google Scholar
[15]
Leivo J, Varis TE, Turunen E, et al. Influence of the elementary mixing scale on HVOF-sprayed coatings derived from nanostructured aluminosilicate/mullite feedstock. Surf Coat Technol 2008, 203: 335-344.
Crossref Google Scholar
[16]
Ctibor P, Neufuss K, Chraska P. Microstructure and abrasion resistance of plasma sprayed titania coatings. J Therm Spray Techn 2006, 15: 689-694.
Crossref Google Scholar
[17]
ASTM International. ASTM G75-95. Standard Test Method for Determination of Slurry Abrasivity (Miller Number) and Slurry Abrasion Response of Materials (SAR Number). 1995.
[18]
Reddy KM, Manorama SV, Reddy AR. Bandgap studies on anatase titanium dioxide nanoparticles. Mater Chem Phys 2003, 78: 239-245.
Crossref Google Scholar
[19]
Moustakas NG, Kontos AG, Likodimos V, et al. Inorganic–organic core–shell titania nanoparticles for efficient visible light activated photocatalysis. Appl Catal B: Environ 2013, 130–131: 14-24.
Crossref Google Scholar
[20]
Chen X, Liu L, Yu PY, et al. Increasing solar absorption for photocatalysis with black hydrogenated titanium dioxide nanocrystals. Science 2011, 331: 746-750.
Crossref Google Scholar
[21]
Tsuyumoto I, Uchikawa H. Nonstoichiometric orthorhombic titanium oxide, TiO2-δ and its thermochromic properties. Mater Res Bull 2004, 39: 1737-1744.
Crossref Google Scholar
[22]
Barajas-Ledesma E, García-Benjume ML, Espitia-Cabrera I, et al. Determination of the band gap of TiO2–Al2O3 films as a function of processing parameters. Mat Sci Eng B 2010, 174: 71-73.
Crossref Google Scholar
[23]
Panpranot J, Kontapakdee K, Praserthdam P. Selective hydrogenation of acetylene in excess ethylene on micron-sized and nanocrystalline TiO2 supported Pd catalysts. Appl Catal A: Gen 2006, 314: 128-133.
Crossref Google Scholar
[24]
Tieng S, Kanaev A, Chhor K. New homogeneously doped Fe(III)–TiO2 photocatalyst for gaseous pollutant degradation. Appl Catal A: Gen 2011, 399: 191-197.
Crossref Google Scholar
Journal of Advanced Ceramics
Volume 2 Issue 3,
September 2013
Pages 218-226
DOI: 10.1007/s40145-013-0063-z
Cite this article:
CTIBOR P, STENGL V, PALA Z. Structural and photocatalytic characteristics of TiO2 coatings produced by various thermal spray techniques. Journal of Advanced Ceramics, 2013, 2(3): 218-226. https://doi.org/10.1007/s40145-013-0063-z

1125

Views

35

Downloads

12

Crossref

N/A

Web of Science

13

Scopus

0

CSCD

Altmetrics
Received: 09 January 2013
Revised: 10 April 2013
Accepted: 15 April 2013
Published: 07 September 2013
© The author(s) 2013

Open Access: This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
Return