Preparation of Titanium Dioxide Photocatalytic Particles with Magnetism and the Photocatalytic Activity

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Hiroyuki Atsuumi¹  Masahiro Hasegawa¹  Mitsumasa Kimata¹  Akio Funakoshi¹ 

[1] Department of Chemistry and Chemical Engineering, Yamagata University

关键词: Photocatalyst;    Titanium Dioxide;    Photocatalytic Activity;    Magnetite;    Core-Shell Structure;   

DOI  :  10.1252/jcej.38.300

来源: Maruzen Company Ltd

【 摘 要 】

References(11)Cited-By(3)The magnetically photocatalytic particles prepared have a core-shell structure of three layers coating magnetite core particles with silica and titania by the hydrolysis of tetraethoxysilane and titanium tetraisopropoxide, respectively. The thicknesses of silica and titania layers were controlled by changing the concentrations of two alkoixides used. The coated photocatalytic particles were heated at 773 K under the nitrogen or hydrogen atmosphere in the tube furnace. By the heating process, the surface titania layer of photocatalytic particles varied to titanium dioxide, of an anatase type, and the magnetism of particles increased.It was found that, from the decomposition experiments of the rhodamine B, the prepared photocatalytic particles had good photocatalytic activities and that they can be easily separated by magnetism. Furthermore, the result of the decomposition experiments revealed that the thicknesses of silica and titanium layers are mainly influenced by the photocatalytic activity.

【 授权许可】

Unknown