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Influence of plasma spraying parameter on microstructure and photocatalytic properties of nanostructured TiO2–Fe3O4 coating

✍ Scribed by Qinghe Yu; Chungen Zhou; Xin Wang

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
968 KB
Volume
283
Category
Article
ISSN
1381-1169

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✦ Synopsis

TiO 2 -Fe 3 O 4 coatings on transparent glasses were prepared by atmospheric plasma spraying (APS). As-sprayed TiO 2 -Fe 3 O 4 coatings consist of anatase TiO 2 , rutile TiO 2 , Fe 3 O 4 and FeTiO 3 . The grain size, rate of porosity and fractions of the anatase and TiFeO 3 phases in APS coatings were dependent on the process parameters. With an increase in plasma power, the content of anatase TiO 2 and the rate of porosity in the coatings were decreased while the content of the resultant FeTiO 3 phase and the grain size in the coating were increased. The coating condition of 500 A has the best photocatalytic efficiency and 600 A has the worst. The photocatalytic property of the APS TiO 2 -Fe 3 O 4 coatings was primarily dependent on synergistic effect of the fractions of FeTiO 3 and anatase phases.

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