Effect of water/acetonitrile ratio on dye-sensitized photocatalytic H2 evolution under visible light irradiation

被引：23

作者：

Abe, R ^{[1
]}

Sayama, K ^{[1
]}

Sugihara, H ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Tehcnol, T Sukuba 3058565, Japan

来源：

JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME | 2005年 / 127卷 / 03期

关键词：

solar hydrogen production; water splitting; visible light; photocatalysts; dye sensitization;

D O I：

10.1115/1.1878854

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

H-2 production in a water-acetonitrile solution containing iodide as an electron donor as investigated over dye-sensitized Pt/TiO2 photocatalysts under visible light irradiation, as a potential water-splitting system based on an iodide redox mediator The rates of H-2 evolution decreased with increasing proportion of water in the solutions, because of a decrease in the energy gap between the redox potential of I-3(-)/I- and the highest occupied molecular orbital levels of the dyes, which decreases the efficiency of electron transfer from I- to dye.

引用

页码：413 / 416

页数：4

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