The researchers at Materials and Energy Research Center, Iran managed to manufacture a nanophotocatalyst coating with high performance in air pollution removal.
Maryamossadat Bozorgtabar, a researcher at Materials and Energy Research Center, managed to produce TiO2 nanostructured coating with high photocatalytic activity for air pollution removal by HVOF thermal spray process.
The remaining anatase percentage in this kind of nanocoating is about three times more than its rivals. Manipulating the transformation of anatase to rutile in spray process, which resulted in manufacturing a coating with higher anatase phase percentage and high photocatalytic activity, by identifying and controlling the spray parameters is one of the main advantages of this research work.
Thermal spray processes belong to advanced processes in the production of metallic, ceramic, and cermet coatings. Coatings manufactured by this method have specific properties such as high adhesive strength, high uniformity, and high coating rates.
HVOF spray process is the most advanced thermal spray process in which raw materials particles are accelerated towards sublayer at a very high speed (1200 m/s) after being fully or partially melted. After collision with sublayer, the coating is formed.
The details of this research which has been accomplished through cooperation between Materials and Energy Research Center and Isfahan Science & Technology Town are published in Modern Physics Letters B, volume 24, pages 247-255, 2010.
Source: Iran Nanotechnology Initiative Council