Photocatalytic activity of TiO2 nanoparticles in hydrothermal and supercritical water

被引：5
|
作者：
Kometani, Noritsugu [1 ]
Sugimoto, Kazumi [1 ]
Fujita, Akiyo [1 ]
Yonezawa, Yoshiro [1 ]
机构：
[1] Osaka City Univ, Grad Sch Engn, Dept Appl Chem, Sumiyoshi Ku, Osaka 5588585, Japan
来源：
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN | 2007年 / 40卷 / 06期
关键词：
supercritical water; photocatalysis; titanium dioxide; nanoprticle; silver; SILVER; PARTICLES; CELL;
D O I：
10.1252/jcej.40.463
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The photocatalytic reduction of Ag+ ions by TiO2 nanoparticles was examined in water under high-temperature high-pressure conditions of T = 25-400 degrees C and P = 30 MPa. The analysis of the reaction by uv-vis absorption spectroscopy, the atomic absorption spectrometry, and TEM observations revealed that the efficient photocatalytic activity compared with that at room temperature remained even under hydrothermal and supercritical conditions. These results could open the way to new applications of TiO2 under extreme environments which have never been explored before.
引用
收藏
页码：463 / 467
页数：5
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