FeTiO
3 with band gap of 2.85 eV was added into TiO
2 powder to improve the visible light responsivity of TiO
2 in this study. The compositions and photocatalytic activity of plasma sprayed TiO
2, TiO
2-30%FeTiO
3, TiO
2-50%FeTiO
3 and FeTiO
3 coatings were investigated. The influence of FeTiO
3 compound on the charge carrier separation and recombination in the TiO
2-FeTiO
3 coating was discussed. The FeTiO
3 coating plasma sprayed under the arc current of 400 A consisted of rutile TiO
2, FeTiO
3, Fe
2TiO
5, and thermally metastable Fe
2Ti
3O
9 and γ-Fe2O3. TiO
2-30%FeTiO
3 coating sprayed under the arc current of 400 A, which contained anatase TiO
2, rutile TiO
2 and FeTiO
3, had good photocatalytic activity. The relative deposition rate of TiO
2-30%FeTiO
3 powder under the arc current of 400 A was approximate to 4 μm/pass. For the low band gap of pure FeTiO
3 compound, the existence of FeTiO
3 could improve the photocatalytic activity of anatase TiO
2 when FeTiO
3 contacts coherently with it, which was explained using a proposed two-steps electron transfer model.
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