Abstract
A dry mechanical processing device with glow discharge in milling machine was newly developed. Using the device, nanosized TiO2 powder (301m2/g) was mechanically activated under glow discharge with NH3 (10%)/Ar gas (300Pa). The resultant powder was pale yellow in color, and the specific surface area was 283m2/g. The processed powder had higher photocatalytic activity than the raw powder, when it was evaluated through the decomposition of acetaldehyde vapor under fluorescent lamp.
