Abstract: Titanium dioxide (TiO2) coatings have potential applications in many important areas, like photocatalysis decomposition and photovoltaic cell, which have attracted extensive attention of researchers in recent years. Among various coating fabrication techniques, thermal spray processes can be used to prepare TiO2 coatings quickly and efficiently in large area and batch. The obtained coatings have good mechanical properties and the cost is relatively low, which make the thermal sprayed TiO2 coatings have broad prospects in industrial productions. However, the crystalline phase composition of TiO2 coatings is an important factor affecting the final properties of the coatings. The key point of controlling the crystalline phase composition is the regulation of metastable anatase phase. This paper reviews the thermal spraying technologies which are applied to deposit TiO2 coatings, such as the conventional powder thermal spray, liquid thermal spray and cold spray, etc. The optimization of important spraying parameters to achieve the objective of regulating anatase phase have been described. The effects of doping on anatase phase of TiO2 are discussed. Finally, the problems existing in regulating anatase phase of TiO2 coatings and the future research directions are proposed.
1 Yang G J, Li C J, Wang Y Y. Phase formation of nano-TiO2 particles during flame spraying with liquid feedstock[J]. J Thermal Spray Technol,2004,14(5):480. 2 Jaworski R, Pawlowski L, Pierlot C. Recent developments in suspension plasma sprayed titanium oxide and hydroxyapatite coatings[J]. J Thermal Spray Technol,2010,19(1-2):240. 3 Cui Yuming. Factors influencing photocatalytic activity of nano-TiO2 [J]. Chinese J Rare Metals,2006,30(1):107(in Chinese). 崔玉明. 影响纳米材料TiO2光催化活性的因素[J].稀有金属,2006,30(1):107. 4 Cui Yuming. Photocatalytic degradat of pollutant from river by TiO2 as photocatalys[J]. J Henan University of Science and Technology: Nat Sci,2003,24(1):94(in Chinese). 崔玉明. 采用TiO2光催化剂对河水中污染物进行光催化降解[J]. 河南科技大学学报:自然科学版,2003,24(1):94. 5 Toma F L, Sokolov D, Bertrand G, et al. Comparison of the photocatalytic behavior of TiO2 coatings elaborated by different thermal spraying processes[J]. J Thermal Spray Technol,2006,15(4):576. 6 Bordes M C, Vicent M, Moreno R, et al. Application of plasma-sprayed TiO2 coatings for industrial (tannery) wastewater treatment[J]. Ceram Int,2015,41(10):14468. 7 Zhang C, Chaudhary U, Das S, et al. Effect of porosity on photocatalytic activity of plasma-sprayed TiO2 coating[J]. J Thermal Spray Technol,2013,22(7):1193. 8 Yang G J, Li C J, Han F, et al. Effects of annealing treatment on microstructure and photocatalytic performance of nanostructured TiO2 coatings through flame spraying with liquid feedstocks[J]. J Vacuum Sci Technol B,2004,22(5):2364. 9 Zeng Y, Liu J T, Wu W, et al. Photocatalytic performance of plasma sprayed TiO2-ZnFe2O4 coatings[J]. Surf Coat Technol,2005,200(7):2398. 10 Ohno T, Tokieda K, Higashida S, et al. Synergism between rutile and anatase TiO2 particles in photocatalytic oxidation of naphthalene[J]. Appl Catal A,2003,107(19):4545. 11 Dong R L, Wang F, Li Z Y, et al. Honeycombed TiO2 films prepared by combining breath figure and sol gel methods[J]. Surf Coat Technol,2015,276:391. 12 Ye L Q, Zhang Y L, Zhang X X, et al. Sol-gel preparation of SiO2/TiO2/SiO2-TiO2 broadband antireflective coating for solar cell cover glass[J]. Solar Energy Mater Solar Cells,2013,111:160. 13 Tangale N P, Niphadkar P S, Samuel V, et al. Synthesis of Sn-containing anatase (TiO2) by sol-gel method and their performance in catalytic water splitting under visible light as a function of tin content[J]. Mater Lett,2016,171:50. 14 Rego E, Marto J, Marcos P, et al. Decolouration of orange Ⅱ solutions by TiO2 and ZnO active layers screen-printed on ceramic tiles under sunlight irradiation[J]. Appl Cataly A,2009,355(1-2):109. 15 Fan K, Liu M, Peng T Y, et al. Effects of paste components on the properties of screen-printed porous TiO2 film for dye-sensitized solar cells[J]. Renewable Energy,2010,35(2):555. 16 Marcos P, Marto J, Trintade T, et al. Screen-printing of TiO2 photocatalytic layers on glazed ceramic tiles[J]. J Photochem Photobiol A,2008,197(2-3):125. 17 Natarajan C, Fukunaga N, Nogami G. Titanium dioxide thin film deposited by spray pyrolysis of aqueous solution[J]. Thin Solid Films,1998,322(1-2):6. 18 Mills A, Elliott N, Parkin I P, et al. Novel TiO2 CVD films for semiconductor photocatalysis[J]. J Photochem Photobiol A,2002,151(1-3):171. 19 Lee H, Song M Y,Jurng J, et al. The synthesis and coating process of TiO2 nanoparticles using CVD process[J]. Powder Technol,2011,214(1):64. 20 Zalnezhad E, Hamouda A M S, Faraji G, et al. TiO2 nanotube coa-ting on stainless steel 304 for biomedical applications[J]. Ceram Int,2015,41(2):2785. 21 Abreu C S, Matos J, Cavaleior A, et al. Tribological characterization of TiO2/Au decorative thin films obtained by PVD magnetron sputtering technology[J]. Wear,2015,330-331:419. 22 Ren Kun, Huang Jing, He Xiaoyan, et al. Research progress in thermal spray fabrication of titania photocatalytic coatings[J]. Surface Technol,2015,44(4):66(in Chinese). 任坤,黄晶,贺小燕,等.热喷涂制备TiO2光催化涂层研究进展[J].表面技术,2015,44(4):66. 23 Lee C, Choi H, Lee C, et al. Photocatalytic properties of nano-structured TiO2 plasma sprayed coating[J]. Surf Coat Technol,2003,173(2):192. 24 Kanazawa T, Ohmori A. Behavior of TiO2 coating formation on PET plate by plasma spraying and evaluation of coating′s photocatalytic activity[J]. Surf Coat Technol,2005,197(1):45. 25 Bertrand G, Berger N, Meunier C, et al. Evaluation of metastable phase and microhardness on plasma sprayed titania coatings[J]. Surf Coat Technol,2006,200(16-17):5013. 26 Wang X Y, Liu Z, Liao H, et al. Microstructure and electrical pro-perties of plasma sprayed porous TiO2 coatings containing anatase[J]. Thin Solid Films,2004,451-452:37. 27 Yang G J, Li C J, Han F, et al. Microstructure and photocatalytic performance of high velocity oxy-fuel sprayed TiO2 coatings[J]. Thin Solid Films,2004,466(1-2):81. 28 Yang G J, Li C J, Wang Y Y, et al. Dominant microstructural feature over photocatalytic activity of high velocity oxy-fuel sprayed TiO2 coating[J]. Surf Coat Technol,2007,202(1):63. 29 Bozorgtabar M, Rahimipour M, Salehi M, et al. Novel photocatalytic TiO2 coatings produced by HVOF thermal spraying process[J]. Mater Lett,2010,64(10):1176. 30 Toma F L, Bertrand G, Chwa S O, et al. Microstructure and photocatalytic properties of nanostructured TiO2 and TiO2-Al coatings elaborated by HVOF spraying for the nitrogen oxides removal[J]. Mater Sci Eng A,2006,417(1-2):56. 31 Geng Xin, Li Dayu, Zhang Chao. Research progress of functional coating deposited by liquid plasma spraying[J].New Chem Mater,2016,44(4):26(in Chinese). 耿欣,李大玉,张超.液料等离子喷涂制备功能涂层的研究进展[J].化工新型材料,2016,44(4):26. 32 Toma F L, Bertrand G, Chwa S O, et al. Comparative study on the photocatalytic decomposition of nitrogen oxides using TiO2 coatings prepared by conventional plasma spraying and suspension plasma spraying[J]. Surf Coat Technol,2006,200(20-21):5855. 33 Toma F L, Berger L M, Jacquet D, et al. Comparative study on the photocatalytic behaviour of titanium oxide thermal sprayed coatings from powders and suspensions[J]. Surf Coat Technol,2009,203(15):2150. 34 Toma F L, Bertrand G, Klein D, et al. Nanostructured photocatalytic titania coatings formed by suspension plasma spraying[J]. J Thermal Spray Technol,2006,15(4):587. 35 Du L Z, Coyle T W, Chien K, et al. Titanium dioxide coating prepared by use of a suspension-solution plasma-spray process[J]. J Thermal Spray Technol,2015,24(6):915. 36 Bannier E, Darut G, Sanchez E, et al. Microstructure and photoca-talytic activity of suspension plasma sprayed TiO2 coatings on steel and glass substrates[J]. Surf Coat Technol,2011,206(2-3):378. 37 Chen D Y, Jordan E H, Gell M. Porous TiO2 coating using the solution precursor plasma spray process[J]. Surf Coat Technol,2008,202(24):6113. 38 Li C Y,Li W Y. Deposition characteristics of titanium coating in cold spraying[J]. Surf Coat Technol,2003,167(2-3):278. 39 Yamada M, Isago H, Nakano H, et al. Cold spraying of TiO2 photocatalyst coating with nitrogen process gas[J]. J Thermal Spray Technol,2010,19(6):1218. 40 Yang G J,Li C J,Han F, et al. Low temperature deposition and characterization of TiO2 photocatalytic film through cold spray[J]. Appl Surf Sci,2008,254(13):3979. 41 Hanaor D A, Sorrell C C. Review of the anatase to rutile phase transformation[J]. J Mater Sci,2011,46(4):855. 42 Oh S M, Kim S S, Lee J E, et al. Effect of additives on photocatalytic activity of titanium dioxide powders synthesized by thermal plasma[J]. Thin Solid Films,2003,435(1-2):252. 43 Mauer G, Guignard A, Vaben R. Plasma spraying of efficient photoactive TiO2 coatings[J]. Surf Coat Technol,2013,220:40. 44 Burlacov I, Jirkovsky J, Muller M, et al. Induction plasma-sprayed photocatalytically active titania coatings and their characterisation by micro-Raman spectroscopy[J]. Surf Coat Technol,2006,201:255. 45 Yang G J, Li C J, Li C X, et al. Effect of Cu2+ doping on photocatalytic performance of liquid flame sprayed TiO2 coatings[J]. J Thermal Spray Technol,2006,15(4):582. 46 Yang G J, Li C J, Huang X C, et al. Influence of silver doping on photocatalytic activity of liquid-flame-sprayed-nanostructured TiO2 coating[J]. J Thermal Spray Technol,2007,16(5-6):881. 47 Ye F X, Ohmori A. the Photocatalytic activity and photo-absorption of plasma sprayed TiO2-Fe3O4 binary oxide coatings[J]. Surf Coat Technol,2002,160(1):62. 48 Chen H, Lee S W, Kim T H, et al. Photocatalytic decomposition of benzene with plasma sprayed TiO2-based coatings on foamed aluminum[J]. J Eur Ceram Soc,2006,26(12):2231.
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2017, Vol. 31 
