Efficient suspension plasma spray fabrication of black titanium dioxide coatings with visible light absorption performances

Zhai, Mengjiao; Liu, Yi; Huang, Jing; Wang, Yingquan; Chen, Kuan; Fu, Yang; Li, Hua

doi:10.1016/j.ceramint.2018.09.268

Cited by 21 publications

(7 citation statements)

References 49 publications

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“…Furthermore, to facilitate the application of black TiO 2 , Zhai et al fabricated black TiO 2 coatings by using a suspension plasma spray (SPS) method. Black TiO 2 coatings with porous microstructures and high photocatalytic activity were realized (Ref 21 ), as shown in Fig. 8 .…”

Section: Thermal-sprayed Photocatalytic Coatingsmentioning

confidence: 99%

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Thermal-Sprayed Photocatalytic Coatings for Biocidal Applications: A Review

et al. 2020

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There have been ever-growing demands for disinfection of water and air in recent years. Efficient, eco-friendly, and cost-effective methods of disinfection for pathogens are vital to the health of human beings. The photocatalysis route has attracted worldwide attention due to its highly efficient oxidative capabilities and sustainable recycling, which can be used to realize the disinfection purposes without secondary pollution. Though many studies have comprehensively reviewed the work about photocatalytic disinfection, including design and fabrication of photocatalytic coatings, inactivation mechanisms, or practical applications, systematic reviews about the disinfection photocatalysis coatings from fabrication to effort for practical use are still rare. Among different ways of fabricating photocatalytic materials, thermal spray is a versatile surface coating technique and competitive in constructing large-scale functional coatings, which is a most promising way for the future environmental purification, biomedical and life health applications. In this review, we briefly introduced various photocatalytic materials and corresponding inactivation mechanisms for virus, bacteria and fungus. We summarized the thermal-sprayed photocatalysts and their antimicrobial performances. Finally, we discussed the future perspectives of the photocatalytic disinfection coatings for potential applications. This review would shed light on the development and implementation of sustainable disinfection strategies that is applicable for extensive use for controlling pathogens in the near future.

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Section: Thermal-sprayed Photocatalytic Coatingsmentioning

confidence: 99%

“…8 Digital photographs and topographical morphology of the white TiO 2 coating (A) and the black TiO 2 coating (B) fabricated by suspension plasma spraying. (-3 is enlarged view of selected area in -2) (Ref 21 ) …”

Section: Thermal-sprayed Photocatalytic Coatingsmentioning

confidence: 99%

Thermal-Sprayed Photocatalytic Coatings for Biocidal Applications: A Review

et al. 2020

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“…In addition to spray liquid raw materials, other spray process parameters also have important impacts. Zhai et al [73] fabricated black titanium dioxide coatings with a porous micro-nano structure and high photocatalytic activity. To reach the desired titania coatings, plasma spray power and gun moving speed were optimized.…”

Section: Photocatalytic Coatingsmentioning

confidence: 99%

Micro-nano structured functional coatings deposited by liquid plasma spraying

Huan

et al. 2020

J Adv Ceram

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Inspired by the micro-nano structure on the surface of biological materials or living organisms, micro-nano structure has been widely investigated in the field of functional coatings. Due to its large specific surface area, porosity, and dual-scale structure, it has recently attracted special attention. The typical fabrication processes of micro-nano structured coatings include sol-gel, hydrothermal synthesis, chemical vapor deposition, etc. This paper presents the main features of a recent deposition and synthesis technique, liquid plasma spraying (LPS). LPS is an important technical improvement of atmospheric plasma spraying. Compared with atmospheric plasma spraying, LPS is more suitable for preparing functional coatings with micro-nano structure. Micro-nano structured coatings are mainly classified into hierarchical-structure and binary-structure. The present study reviews the preparation technology, structural characteristics, functional properties, and potential applications of LPS coatings with a micro-nano structure. The micro-nano structured coatings obtained through tailoring the structure will present excellent performances.

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“…The photocatalytic activity of TiO 2 coatings depends strongly on their phase composition and microstructure. Many techniques have been employed to tailor these properties of TiO 2 , which include sol–gel methods [ 3 ], spray pyrolysis [ 4 ], chemical vapor deposition (CVD) [ 5 ], cold spraying [ 6 ], high-velocity oxy-fuel (HVOF) [ 7 ], and plasma spraying processes [ 8 , 9 , 10 ]. Among these methods, the plasma spraying process is on the cutting edge of flexible and high-rate deposition, in which the thickness and morphology can be precisely controlled [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Solution Precursor Plasma Spraying of TiO2 Coatings Using a Catalyst-Free Precursor

et al. 2023

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The microstructural characteristics and phase composition of solution precursor plasma-sprayed (SPPS) titania-based coatings using a catalyst-free precursor are reported in this work. An ethanol-based solution containing titanium isopropoxide was used to deposit TiO2 coatings. The thermal behavior of the solution precursor changed as its phase transformation temperature increased when the molar concentration was increased from 0.3 M to 0.6 M. Scanning electron micrographs showed that the surface of the coatings was composed of nano- and submicron-sized spherical particles (<1 μm) with sintered and melted particles. The cross-sections showed a porous structure using lower concentrations and dense coating formation with micropores using higher concentrations, with thicknesses of about 5 µm–8 µm. Moreover, the coatings when the number of spray passes was increased were 16 µm–20 µm thick, giving an average layer thickness of 0.6 µm deposited per spray pass in all cases. Phase analysis revealed the presence of both the anatase and rutile phases of TiO2 in coatings sprayed with various concentrations at various stand-off distances. More detailed discussion is presented with respect to the effects of the solution concentration, stand-off distance, and number of spray passes on the coating’s phase composition and microstructure.

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Efficient suspension plasma spray fabrication of black titanium dioxide coatings with visible light absorption performances

Cited by 21 publications

References 49 publications

Thermal-Sprayed Photocatalytic Coatings for Biocidal Applications: A Review

Thermal-Sprayed Photocatalytic Coatings for Biocidal Applications: A Review

Micro-nano structured functional coatings deposited by liquid plasma spraying

Solution Precursor Plasma Spraying of TiO2 Coatings Using a Catalyst-Free Precursor

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