Effect of sacrificial electron donors on hydrogen generation over visible light–irradiated nonmetal-doped TiO2 photocatalysts

被引：1
作者：
Ujjwal Pal
Sarita Ghosh
Debabrata Chatterjee
机构：
[1] CSIR-Central Mechanical Engineering Research Institute,Chemistry Group and Biomimetics Group
来源：
Transition Metal Chemistry | 2012年 / 37卷
关键词：
TiO2; TEOA; Hydrogen Generation; International Energy Agency; Monoethanolamine;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Hydrogen generation over carbon-, nitrogen- and sulfur-doped TiO2 semiconductor photocatalysts (represented as C–TiO2, N–TiO2 and S–TiO2, respectively) under visible light irradiation has been achieved using various sacrificial electron donors, namely triethanolamine, diethanolamine, monoethanolamine, triethylamine, MeOH, EtOH, EDTA, l-ascorbic acid and phenol. The highest initial rate of H2 production was found to be in the range 1,000–2,200 μmol/g/h at ambient conditions when triethanolamine was used as sacrificial electron donor. The efficacy of hydrogen production over these photocatalysts depends strongly on the nature of the sacrificial electron donor and decreases in the following order: C–TiO2 > S–TiO2 > N–TiO2. The results of the present studies suggest that the rate of H2 production is not simply governed by the reduction potential of the sacrificial electron donor but also by the kinetic barrier of the electron transfer process.
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页码：93 / 96
页数：3
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