Abstract
In the present study we combined two results, which related with soft solution processing, one is the "Dual Anode System" for direct fabrication of LiCoO2 films on various substrates, the other one is the direct fabrication of photo catalysis thin films using hydrothermal method. They, therefore, enable to deposit the films directly on various substrates, enable to direct fabrication of NaTaO3 thin films for the first time. The treatment, as the above mentioned, with cobalt and target metal electrodes led to the formation of apparent black films on the target electrode (Pt, Ni and graphite). Also, the fabricated NaTaO3 thin films have good photo catalysis activity.