Preparation of Highly Photocatalytic Nanocomposite Films Consisting of TiO[sub 2] Particles and Zn Electrodeposited on Steel

Abstract

Nanocomposite films consisting of particles and were formed on steel plates by an occlusion electrode‐ position method. Depth profiles of the film compositions were determined by glow discharge optical emission spectrometry; these showed that particles were incorporated throughout the film and the loaded amount increased near the surface. The addition of to the electrodeposition bath above of the concentration (x) caused almost complete c axis orientation of the crystal followed by a significant increase in the uptake of . The first‐order rate constant for the gas‐phase oxidation of was employed as an indicator of the photocatalytic activity. The k value for the sample prepared at was greater than for the sample at by a factor of ca. 2.7. ©1999 The Electrochemical Society