Title:
金属超微粒子担持光触媒を保持した高機能性素材およびその製造方法
Document Type and Number:
Japanese Patent JP3601753
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To increase the photocatalytic efficiency of titaniumoxide and to prolong adsorption and decomposition cycles by holding the photocatalyst fine particles, which support the hyper-fine metal particles, on the surface of the base material. SOLUTION: The highly functional base material has such fundamental constitution that the photocatalyst fine particles supporting the hyperfine metal particles are held on the surface of the base material. The hyperfine metal particles have a particle size of 1-10 nm, in which size, a quantum size effect may be exhibited, and are supported in an amount more than about 100 particles on the surface of one photocatalyst fine particle. The suitable substance as hyperfine metal particle is a transition metal, preferably Pt or Ag, etc. The suitable substance as the photocatalyst fine particle is a metal oxide semiconductor, which has the ability to form hydroxy radical and/or super oxide anion when it is irradiated with ultraviolet, ray preferably, titanium oxide. The suitable material as the holding base material is a fiber as one dimensional material, preferably active carbon fiber.
Inventors:
Akio Komatsu
Application Number:
JP24588597A
Publication Date:
December 15, 2004
Filing Date:
August 06, 1997
Export Citation:
Assignee:
Daiken Chemical Industry Co., Ltd.
Akio Komatsu
Akio Komatsu
International Classes:
B01J21/06; B01J23/38; B01J23/42; B01J35/02; D01F9/14; D06B19/00; D06M11/00; D06M11/46; D06M101/00; D06M101/40; (IPC1-7): B01J35/02; B01J23/42; D01F9/14; D06B19/00; D06M11/46
Domestic Patent References:
| JP8283022A | ||||
| JP7024256A | ||||
| JP8266902A |
Other References:
Gratian R. Bamwenda,Photoassisted hydrogen production from a water-ethanol solution:a comparison of activities of Au-TiO,Journal of Photochemistry and photobiology A:Chemistry,1995年,89,p.177-189
Attorney, Agent or Firm:
Hisami Miki