Hydrogen production over Au-loaded mesoporous-assembled SrTiO3 nanocrystal photocatalyst: Effects of molecular structure and chemical properties of hole scavengers

被引：57
|
作者：
Puangpetch, Tarawipa [1 ]
Chavadej, Sumaeth [1 ,2 ]
Sreethawong, Thammanoon [1 ,2 ]
机构：
[1] Chulalongkorn Univ, Petr & Petrochem Coll, Bangkok 10330, Thailand
[2] Chulalongkorn Univ, Ctr Petr Petrochem & Adv Mat, Bangkok 10330, Thailand
来源：
ENERGY CONVERSION AND MANAGEMENT | 2011年 / 52卷 / 05期
关键词：
Strontium titanate; Gold loading; Sol-gel method; Mesoporous assembly; Photocatalytic hydrogen production; VISIBLE-LIGHT IRRADIATION; SOL-GEL PROCESS; SURFACTANT TEMPLATE; ORGANIC POLLUTANTS; STRONTIUM-TITANATE; H-2; PRODUCTION; WATER; EVOLUTION; TIO2; DEGRADATION;
D O I：
10.1016/j.enconman.2010.12.026
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The hydrogen production via the photocatalytic water splitting under UV irradiation using different compounds as hole scavengers (including methanol, formic acid, acetic acid, propanoic acid, hydrochloric acid, and sulfuric acid) under a low concentration range (< 8 vol.%) was investigated over the 1 wt.% Au-loaded mesoporous-assembled SrTiO3 nanocrystal photocatalyst. The results indicated that the hydrogen production efficiency greatly depended on the molecular structure, chemical properties, and concentration of the hole scavengers. Formic acid, which is the smallest and completely-dissociated water-soluble carboxylic acid, exhibited the highest hydrogen production enhancement ability. The 2.5 vol.% aqueous formic acid solution system provided the highest photocatalytic hydrogen production rate. (c) 2011 Elsevier Ltd All rights reserved.
引用
收藏
页码：2256 / 2261
页数：6
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