Photocatalytic Activity of TiO2 Nanoparticles in Hydrothermal and Supercritical Water

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Noritsugu Kometani¹  Yoshiro Yonezawa¹  Kazumi Sugimoto¹  Akiyo Fujita¹ 

[1] Department of Applied Chemistry, Graduate School of Engineering, Osaka City University

关键词: Supercritical Water;    Photocatalysis;    Titanium Dioxide;    Nanoprticle;    Silver;   

DOI  :  10.1252/jcej.40.463

来源: Maruzen Company Ltd

【 摘 要 】

References(17)Cited-By(5)The photocatalytic reduction of Ag+ ions by TiO2 nanoparticles was examined in water under high-temperature high-pressure conditions of T = 25–400°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.

【 授权许可】

Unknown