2007 Fiscal Year Final Research Report Summary
Condensation and photocatalytic degradation of environmental pollutants using hydrophobic mesoporous materials designed using F coating
| Project/Area Number |
17360388
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Catalyst/Resource chemical process
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| Research Institution | Osaka University |
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Principal Investigator |
YAMASHITA Hiromi Osaka University, Graduate Schcol of Engineering, Professor (40200688)
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| Co-Investigator(Kenkyū-buntansha) |
KATAYAMA Iwao Osaka University, Graduate School of Engineering, Associate Professor (10029192)
MORI Kohsuke Osaka University, Graduate School of Engineering, Associate Professor (90423087)
OHMICHI Tetsutaro Osaka University, Graduate School of Engineering, Assistant Professor (10379141)
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| Project Period (FY) |
2002 – 2007
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| Keywords | Mesoporous materials / Hydrophobic surface / F ion coating / Photocatalyst / Condensation / Environmental purification / Meso space / Water purification |
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| Research Abstract |
Using the F media the hydrophobic zeolite and mesoporous silica can be synthesized. These hydrophobic porous materials exhibit the high ability for the adsorption of organic compounds diluted in water and become the useful supports of photocatalyst. The hydrophobic Ti-Beta(F) zeolite prepared in the F- media exhibited highly efficiency than the hydrophilic Ti-Beta(OH) zeolite prepared in OH^<-> media for the liquid-phase photocatalytic degradation of 2-propanol diluted in water to produce CO_2 and H_2O. The TiO_2 loaded on the hydrophobic mesoporous silica HMS(F) (TiO_2/HMS(F)), which was synthesized using tetraethyl orthosilicate, tetraethylammonium fluoride as the source of the fluoride and dodecylamine as templates, also exhibited the efficient photocatalytic performance for the degradation. The amount of adsorption of 2-propanol and the photocatalytic reactivity for the degradation increased with increasing the content of fluoride ions on these photocatalysts. The efficient photocatalytic degradation of 2-propanol diluted in water on Ti-Beta (F) zeolite and TiO_2/HMS (F) mesoporous silica can be attributed to the larger affinity for the adsorption of propanol molecules on the titanium oxide species depending on the hydrophobic surface properties of these photocatalysts. We also propose a simple method to design highly hydrophobic zeolite through surface silylation using TEFS reagent and investigate the efficiency of this material as a support of TiO_2 photocatalyst.
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Research Products
(70 results)
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[Journal Article] Surface hydrophilic-hydrophobic property on transparent mesoporous silica thin films containing chromium oxide single-site photocatalyst2008
Author(s)
H., Yamashita, Y., Horiuchi, S., Imaoka, S., Nishio, N., Nishiyama, K., Mori
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Journal Title
Catalysis Today 132
Pages: 146-152
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Synthesis and Photocatalytic Activity of TiO_2 Nanoparticles Loaded on the Fluorine-modified Hydrophobic Mesoporous Silica2007
Author(s)
S., Yuan, S., Okada, K., Maki, Y., Kuwahara, M., Tomonari, S., Kawasaki, K., Mori, H., Yamashita
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Journal Title
Solid State Phenomena 124-126
Pages: 1817-1820
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Efficient Adsorption and Photocatalytic Degradation of Organic Pollutants Diluted inWater Using the Fluoride-modified Hydrophobic Titanium Oxide Photocatalysts : Ti-containing Beta Zeolite and TiO_2 Loaded on HMS Mesoporous Silica2007
Author(s)
H., Yamashita, S., Kawasaki, S., Yuan, K., Maekawa, M., Anpo, M., Matsumura
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Journal Title
Catal. Today 126
Pages: 375-381
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Photocatalytic Degradation of Organic Pollutants Diluted in Water using TiO_2 Loaded on Fluoride-modified Hydrophobic Mesoporous Silica2006
Author(s)
K., Maekawa, O., Chiyoda, S., Ohishiro, S., Okada, M., Anpo, H., Yamashita
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Journal Title
Compres Rendus Chimiea 9
Pages: 817-821
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Degradation of Organic Compounds on TiO, Photocatalysts Prepared by Hydrothermal Method in the Presence of NH_4F2008
Author(s)
S., Kawasaki, K., Maki, S., Yuan,K, Mori, H., Yamashita
Organizer
ISEPD2008, Masan, Korea
Year and Date
2008-01-08
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Hydrothermal synthesis of N- and F-codoped TiO_2 photocatalyst in the presence of NH_4F2007
Author(s)
K., Maki, S., Yuan, K., Mori, I., Katayama, T., Ohmichi, H., Yamashita
Organizer
11th Korea-Japan Symposium on Catalysis, Seoul, Korea
Year and Date
2007-05-21
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Design of hydrophobic zeolite by modification using triethoxyfluorosilane and its application as a support of TiO_2 photocatalyst2007
Author(s)
Y., Kuwahara, K., Mori, I., Katayama, T., Ohmichi, H., Yamashita
Organizer
11th Korea-Japan Symposium on Catalysis, Seoul, Korea
Year and Date
2007-05-21
Description
「研究成果報告書概要(欧文)」より
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