Title:
TITANIA NANOCRYSTALLITE AGGREGATE, MANUFACTURE METHOD THEREFOR, AND PHOTOCATALYST
Document Type and Number:
Japanese Patent JP2005075662
Kind Code:
A
Abstract:
To produce titania having a high photocatalytic activity and having a novel anatase crystal structure, and to provide a manufacture method therefor.
The subject titania nanocrystallite aggregate is characterized in that it is composed of densely packed nanosized anatase titania crystallites, and the crystal faces of the respective crystallites are directly contacted with each other. The manufacture method therefor comprises the step of obtaining a titania sol by reacting an aqueous solution containing a block copolymer having a hydrophobic block and a hydrophilic block and a cationic surfactant with a titanium alkoxide dissolved in an organic solvent and the step of firing the titania sol.
Inventors:
ADACHI MOTONARI
SHU KINTEIN
ISODA SHOJI
HORIUCHI YOSHITOSHI
SHU KINTEIN
ISODA SHOJI
HORIUCHI YOSHITOSHI
Application Number:
JP2003305798A
Publication Date:
March 24, 2005
Filing Date:
August 29, 2003
Export Citation:
Assignee:
UNIV KYOTO
NIPPON TELEGRAPH & TELEPHONE
PIONEER ELECTRONIC CORP
MITSUBISHI CHEM CORP
ROHM CO LTD
HITACHI LTD
NIPPON TELEGRAPH & TELEPHONE
PIONEER ELECTRONIC CORP
MITSUBISHI CHEM CORP
ROHM CO LTD
HITACHI LTD
International Classes:
C01G23/053; B01J23/76; B01J37/02; H01L31/04; (IPC1-7): C01G23/053; B01J23/76; B01J37/02; H01L31/04
Attorney, Agent or Firm:
Yusuke Hiraki