Characterization and Photocatalytic Properties of Plasma Sprayed TiO2 Coatings Deposited from Nanoparticles

Abstract:

Article Preview

The phase and microstructure of four kinds of plasma sprayed TiO2 coatings (P25, ST, NK, KT) were characterized by XRD (X-ray Diffraction), FE-SEM (Field Emission Scanning Electron Microscope) and TEM ( Transmission Electron Microscopy). Their photocatalytic properties were discussed in relation to phase composition and microstructure. The FE-SEM observation results reveal that there are quite a number of nanoparticles on the surfaces of all four kinds of plasma sprayed TiO2 coatings, which provide photocatalytic reactive sites. Based on the observation results of FE-SEM and TEM, the microstructure schematic of plasma sprayed TiO2 coatings using nanoparticles as feedstock is suggested. The best photocatalytic property of P25 coating among the four plasma sprayed TiO2 coatings is attributed to the combination of its fine “cauliflower” structure and the highest anatase content.

Info:

Periodical:

Key Engineering Materials (Volumes 317-318)

Edited by:

T. Ohji, T. Sekino and K. Niihara

Pages:

561-564

DOI:

10.4028/www.scientific.net/KEM.317-318.561

Citation:

H. Chen et al., "Characterization and Photocatalytic Properties of Plasma Sprayed TiO2 Coatings Deposited from Nanoparticles", Key Engineering Materials, Vols. 317-318, pp. 561-564, 2006

Online since:

August 2006

Export:

Price:

$35.00

[1] A. Fujishima, K. Hashimoto, T. Watanabe: TiO2 Photocatalysis fundamentals and applications (BKC, Inc., Tokyo 1999).

[2] A. Mills, S. L. Hunte: J. Photochem. Photobio. A: Chem. Vol. 108 (1997), p.1.

[3] E. A. Lee, S. W. Lee, C. H. Choi, et al.: Mater. Sci. Forum Vol. 439 (2003), p.288.

[4] C. H. Lee, H. S. Choi, C. H. Lee, et al.: Surf. Coat. Technol. Vol. 173 (2003), p.192.

In order to see related information, you need to Login.