Preparation of Ultra Fine TiO2 Particles Dispersible in Organic Solvents and Their Photocatalytic Properties

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Tateaki Ogata¹  Yuichi Yoshida¹  Shimio Sato¹  Tadahiro Murakata¹  Masanobu Hinohara¹  Ryoich Yamamoto¹ 

[1] Department of Materials Science and Engineering, Yamagata University

关键词: Titanium Oxide;    Organic Colloidal Solution;    Absorption Spectrum;    ESR Spectrum;    Photocatalytic Reaction;   

DOI  :  10.1252/jcej.31.21

来源: Maruzen Company Ltd

【 摘 要 】

References(18)Cited-By(10)Ultra fine TiO2 particles which dispersed in various organic solvents were synthesized through hydrolysis of a titanium alkoxide to form colloidal TiO2 particles, followed by modification of the colloidal particles with a hydrophobic coupling agent. The organic solvent solutions of the synthesized TiO2 particles were transparent and had high colloidal stability. Photochemical properties of the TiO2 particles in organic solvents were studied: namely how Ti3+ species were formed in the particles and accumulated in them; and how the particles were photocatalytically active for oxidation of I– and reduction of methylene blue and Ag+. From comparative studies of the photocatalytic reactions, the TiO2 particles are found to have higher photocatalytic activity than commercially available anatase and rutile powders.

【 授权许可】

Unknown