Sol-gel

hydrothermal and photoassisted platinum deposition methods were used to prepare Pt(0.5%)-TiO2/nanotube catalysts.The results show that catalysts are of ideal tubular morphology and large specific surface area.The highest efficiency of hydrogen production appears when the co-adsorption of methanol and water on the catalyst is at the same order of magnitude after 9 h.The results obtained by 1H NMR reveal that methanol molecules are cracked on the catalyst surface

and the transitional products can not be desorbed because of the shackles of hydrogen bonds until CO2 formation.The length of carbon chain

number of branched chains

number of —OH and benzene ring groups on alcohol molecules are of different effects on hydrogen production.The strong or weak adsorption of alcohols on catalysts

and easy or difficult hydroxyl implantation into alcohol molecules can be used to explain these differences.