Abstract
A series of metal (Pt, Ag, and Cu)-deposited TiO 2 films with nanocrystalline structure was prepared. Compared with TiO 2 film, the degradation efficiency of formic acid for the metal-deposited TiO 2 films was significantly higher in both photocatalytic (PC) and photoelectrocatalytic (PEC) processes, the enhanced order in PC and PEC activity for the metal-deposited film is Pt–TiO 2 > Ag–TiO 2 > Cu–TiO 2. However, the electrochemical dissolution of deposited metals (Ag, and Cu) on TiO 2 film would be a technical problem in PEC processes, an alternate PC and PEC processes intermittently provide a positive approach to maintain deposited metals (Ag, and Cu) on the TiO 2 films well.
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