1997 Fiscal Year Final Research Report Summary
DESIGN OF NEW PHOTOFUNCTIONAL MATERIALS BASED ON EXFOLIATED TWO DIMENSIONAL OXIDES
| Project/Area Number |
08554028
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
機能・物性・材料
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| Research Institution | TOKYO INSTITUTE OF TECHNOLOGY |
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Principal Investigator |
DOMEN Kazunari TOKYO INSTITUTE OF TECHNOLOGY,RESEARCH LABORATORY OF RESOURCES UTILIZATION,PROFESSOR, 資源科化学究所, 教授 (10155624)
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| Co-Investigator(Kenkyū-buntansha) |
HARA Michikazu TOKYO INSTITUTE OF TECHNOLOGY,RESEARCH LABORATORY OF RESOURCES UTILIZATION,RESEA, 資源化学研究所, 助手 (70272713)
KONDO Junko N. TOKYO INSTITUTE OF TECHNOLOGY,RESEARCH LABORATORY OF RESOURCES UTILIZATION,RESEA, 資源科学研究所, 助手 (60234936)
TANAKA Akira NIKON CORPORATION,OPT-ELECTRONIC MATERIALS LABORATORY,MANAGER, 技術開発部・光機能材料研究室, 課長
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| Project Period (FY) |
1996 – 1997
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| Keywords | photofunctional materials / two dimensional compounds / exfoliation / ion exchange / intercalation |
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| Research Abstract |
Photocatalysts recently attract a great attention from the view point of eco-friendliness. However, already found photocatalysts do not avail the visible light which dominates the solar light. Although several materials such as CdS were found to utilize the visible light, the eco-harm nature of them is the great disadvantage. We have found that the ion-exchangeable transition metal oxides are promising catalysts which have the photoresponse in visible light region. The serious problem of those materials are that their high interlayr electron density inhibit the intercalation of reactants and that the interlayr spase has not been efficiently utilized. On the other hand, the use of intercalation of organic ions such as tri-butyl-ammonium ion (TBA+) enabled the exfoliation of the layr to produce macropolyanion sheets highly dispersed in water. Furthermore, the dispersed two dimensional inorganic sheets were found to be starting materials of microporous materials and inorganic thin films. These novel materials demonstrated higher photoactivity than the original transition metal oxide and showed different chemical nature. The new types of layred materials were synthesized and are expected to be utilized as functional materials.
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