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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Tsuji, H. Sugahara, H. Gotoh, Y. Ishikawa, J. |
| Copyright Year | 2002 |
| Abstract | Optical absorption and photocatalytic properties of metal negative-ion implanted rutile $TiO_{2}$ were studied to show metal nanoparticle formation in the surface region and improvement of photocatalytic efficiency. Silver negative ions were implanted into titania substrate (rutile crystalline substrate) at 65 keV with a dose of 3 Ø $10^{16}$ - 1 Ø $10^{17}$ $ions/cm^{2}.$ The Ag-implanted rutile also showed a strong optical absorption appeared near 2.1 eV after annealing above 400°C, those well agreed with theoretical absorption peaks due to surface plasmon resonance. This means that Ag nanoparticles were formed in the surface layers of the rutile $TiO_{2}.$ Photocatalytic efficiencies for Ag-implanted titania of were evaluated by means of decolorization of methylene blue solution under fluorescent light. Ag-implanted rutile $TiO_{2}$ (Ag: 65 keV, 5 Ø $10^{16}$ $ions/cm^{2},$ 500°C annealed) showed the better photocatalytic efficiency higher 2.2 times than that of unimplanted rutile $TiO_{2}.$ In the evaluation under fluorescent light through UV-cut filter for 19 h, the Ag-implanted rutile showed 6.7 times better efficiency. |
| Sponsorship | IEEE Circuits & Syst. Soc |
| Starting Page | 705 |
| Ending Page | 708 |
| File Size | 872366 |
| Page Count | 4 |
| File Format | |
| ISBN | 0780371550 |
| DOI | 10.1109/IIT.2002.1258103 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2002-09-22 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Absorption Particle beam optics Optical filters Annealing Fluorescence Silver Crystallization Plasmons Resonance Nanoparticles |
| Content Type | Text |
| Resource Type | Article |
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