Translated Title
Effect of different alcohols as sacrificial agents on efficiency of the photocatalytic decomposition of water to hydrogen over Pt/TiO2
Translated Abstract
In the process of photocatalytic water splitting, some alcoholic compounds are frequently used as the sacrificial agents capturing photogenerated holes to facilitate reduction of water molecules by the conduction band electron. In previous studies, more attention has been paired to development of novel and highly efficient photocatalysts, few researches involve the effect of composition and structure of the sacrificial agents on the production efficiency of hydrogen. Pt/TiO2 was used as the model photo-catalyst, a 125 W high pressure mercury lamp was used as the light source irradiation. When metha-nol, ethanol, propanol, n-butyl alcohol, glycol, glycerin, erythritol and polyethylene glycol were used as the sacrificial agents, the water splitting results show that the rates of hydrogen production was the highest when glycol was used as the sacrificial agent, attained 17.62 mmol·( g·h)-1 . The exper-iment results not only generated H2 and CO2, but also had the production of CO, CH4, C2H6 and C2 H4 . The mechanism of hydrogen production was discussed based on the distribution of photocatalytic reaction products.
Translated Keyword
alcohols sacrificial agents
glycol
hydrogen energy
photocatalysis
water splitting
Access Number
WF:perioarticalfzdxxb201702020
