| Project/Area Number |
17360388
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Catalyst/Resource chemical process
|
|---|
| Research Institution | Osaka University |
|---|
Principal Investigator |
YAMASHITA Hiromi Osaka University, Graduate Schcol of Engineering, Professor (40200688)
|
|---|
| 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)
|
|---|
| Project Period (FY) |
2002 – 2007
|
| Project Status |
Completed (Fiscal Year 2007)
|
| Budget Amount *help |
¥14,440,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2007: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2006: ¥4,600,000 (Direct Cost: ¥4,600,000)
Fiscal Year 2005: ¥4,900,000 (Direct Cost: ¥4,900,000)
|
|---|
| Keywords | Mesoporous materials / Hydrophobic surface / F ion coating / Photocatalyst / Condensation / Environmental purification / Meso space / Water purification / 高度濃縮 |
|---|
| 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.
|
