Effect of Pt concentration on the production of hydrogen by a photocatalyst

In order to increase the effectiveness of water splitting by TiO 2 photocatalysts, the effects of the Pt deposition method and the Pt concentration on the hydrogen production rate of Pt-deposited TiO 2 were studied. Among the methods used in this study, the formaldehyde method resulted in the highest rate of H 2 production. The amount of Pt on TiO 2 had to be optimized to obtain the highest rate of H 2 production. The Pt particles on the Pt-deposited TiO 2 prepared by the present method were too small or too thin to be observed by transmission electron microscopy.