The electrochemistry impedance spectroscopies of ITO plane electrodes and ITO plane electrodes with WO_3 thin film immersed in 1 mol LiClO_4 propylene carbonate electrolyte have been studied by means of the surface process Faraday immittance expression and equivalent circuits.

Nano-WO3 film is the better optical gas sensor material.

In this article,photocatalytic degradation of acid red B(ARB) in aqueous solution was studied with a photocatalytic glass reactor which made of the glass beads evenly coated with transparent WO3/TiO2 thin film by the sol-gel process.