Pt and Pd as catalyst deposited by hydrogen reduction of metal salts on WO3 films for gasochromic application

► WO3 films were prepared by pulsed laser deposition (PLD) method. ► Pt NPs was deposited onto the WO3 films through hydrogen reduction of PtCl2 at 200 °C. ► Gasochromic performance of samples was studied at temperature range of 30-200 °C.