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Title: XAFS Study on Nano-Sized Metal Catalyst Prepared by a Photo-Assisted Deposition Using Ti-Containing Mesoporous Silica Thin Film Photocatalyst

Abstract

Transparent Ti-containing mesoporous silica (TMS) thin films can be prepared on quartz plates using the spin-coating sol-gel method. These thin films have performed super-hydrophilic surface property. Using a photo-assisted deposition (PAD) method, nano-sized Pt metal can be highly deposited on TMS thin films under UV-light irradiation. XAFS measurement indicates that TMS thin films contain isolated and tetrahedrally coordinated Ti-oxide moieties in the frameworks and nano-sized Pt particles can be highly deposited on the photo-excited Ti species in TMS thin films. Measurement of contact angle of droplet water showed that the surface property of Pt/TMS thin film is also hydrophilic as comparable to that of original TMS thin film.

Authors:
; ; ; ; ; ;  [1]
  1. Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871 (Japan)
Publication Date:
OSTI Identifier:
21054748
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 882; Journal Issue: 1; Conference: XAFS13: 13. international conference on X-ray absorption fine structure, Stanford, CA (United States), 9-14 Jul 2006; Other Information: DOI: 10.1063/1.2644668; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ABSORPTION SPECTROSCOPY; CATALYSTS; DEPOSITION; DROPLETS; FINE STRUCTURE; NANOSTRUCTURES; PLATINUM; QUARTZ; SILICA; SOL-GEL PROCESS; SPIN; SURFACE PROPERTIES; THIN FILMS; TITANIUM; ULTRAVIOLET RADIATION; X-RAY SPECTRA; X-RAY SPECTROSCOPY

Citation Formats

Shimada, Makoto, Nishio, Shinichiro, Shimizu, Toshiaki, Mori, Kohsuke, Ohmichi, Tetsutaro, Katayama, Iwao, and Yamashita, Hiromi. XAFS Study on Nano-Sized Metal Catalyst Prepared by a Photo-Assisted Deposition Using Ti-Containing Mesoporous Silica Thin Film Photocatalyst. United States: N. p., 2007. Web. doi:10.1063/1.2644668.
Shimada, Makoto, Nishio, Shinichiro, Shimizu, Toshiaki, Mori, Kohsuke, Ohmichi, Tetsutaro, Katayama, Iwao, & Yamashita, Hiromi. XAFS Study on Nano-Sized Metal Catalyst Prepared by a Photo-Assisted Deposition Using Ti-Containing Mesoporous Silica Thin Film Photocatalyst. United States. doi:10.1063/1.2644668.
Shimada, Makoto, Nishio, Shinichiro, Shimizu, Toshiaki, Mori, Kohsuke, Ohmichi, Tetsutaro, Katayama, Iwao, and Yamashita, Hiromi. Fri . "XAFS Study on Nano-Sized Metal Catalyst Prepared by a Photo-Assisted Deposition Using Ti-Containing Mesoporous Silica Thin Film Photocatalyst". United States. doi:10.1063/1.2644668.
@article{osti_21054748,
title = {XAFS Study on Nano-Sized Metal Catalyst Prepared by a Photo-Assisted Deposition Using Ti-Containing Mesoporous Silica Thin Film Photocatalyst},
author = {Shimada, Makoto and Nishio, Shinichiro and Shimizu, Toshiaki and Mori, Kohsuke and Ohmichi, Tetsutaro and Katayama, Iwao and Yamashita, Hiromi},
abstractNote = {Transparent Ti-containing mesoporous silica (TMS) thin films can be prepared on quartz plates using the spin-coating sol-gel method. These thin films have performed super-hydrophilic surface property. Using a photo-assisted deposition (PAD) method, nano-sized Pt metal can be highly deposited on TMS thin films under UV-light irradiation. XAFS measurement indicates that TMS thin films contain isolated and tetrahedrally coordinated Ti-oxide moieties in the frameworks and nano-sized Pt particles can be highly deposited on the photo-excited Ti species in TMS thin films. Measurement of contact angle of droplet water showed that the surface property of Pt/TMS thin film is also hydrophilic as comparable to that of original TMS thin film.},
doi = {10.1063/1.2644668},
journal = {AIP Conference Proceedings},
number = 1,
volume = 882,
place = {United States},
year = {Fri Feb 02 00:00:00 EST 2007},
month = {Fri Feb 02 00:00:00 EST 2007}
}
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