Photocatalyst material and production method thereof

• Main Authors: KUDO, TAKESHI, RUIKE, AZUMA, TEGURAMORI, SATOSHI, KUZUHORI, KEN, NASHIROZAWA, NORIO, IWASAKI, YUJI, NAKAMURA, YUKO, KAWANAMI, FUMIE
• Format: Patent
• Language: Chinese; English
• Published: 16.08.2004
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; GLASS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; JOINING GLASS TO GLASS OR OTHER MATERIALS; METALLURGY; MINERAL OR SLAG WOOL; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; THEIR RELEVANT APPARATUS; TRANSPORTING

The present invention provides a production method of a photocatalyst material, which comprises a high photocatalytic activity and can reduce the occurrence of peculiar odor at irradiation of ultra-violet rays. The method comprises an original photocatalyst material making process P1 and a base metal adding process P3. The process P1 provides an original photocatalyst material, which has no base metal added on its surface yet. Through the following process P3, a photocatalyst material with base metal particles on its surface is provided. The base metal adding process P3 consists of 3 lower processes. Through solution treatment process P31, the original photocatalyst material is treated with a base metal compound solution using photo electrodeposition method. Through ultra-violet rays treatment process P32, the photocatalyst material treated with a base metal is irradiated by ultra-violet rays. Through drying process P33, the photocatalyst material treated in the previous process is dried. The selected drawing