Photoacoustic spectroscopic analysis of photoinduced change in absorption of titanium(IV) oxide photocatalyst powders : A novel feasible technique for measurement of defect density

Murakami, Naoya; Prieto Mahaney, Orlando Omar; Torimotoa, Tsukasa et al.

Chemical Physics Letters, 2006, 426(1-3), 204-208

Permalink : https://hdl.handle.net/2115/14587

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アクセス権
open access
URI
https://hdl.handle.net/2115/14587
タイトル
Photoacoustic spectroscopic analysis of photoinduced change in absorption of titanium(IV) oxide photocatalyst powders : A novel feasible technique for measurement of defect density
著者
Murakami, Naoya ; Prieto Mahaney, Orlando Omar ; Torimotoa, Tsukasa ; Ohtani, Bunsho
著者名
Murakami, Naoya
著者名
Prieto Mahaney, Orlando Omar
著者名
Torimotoa, Tsukasa
e-Rad_Researcher
80176924
著者名
Ohtani, Bunsho
言語
英語
発行日
2006-07-26
出版者
Elsevier B.V.
収録物名
Chemical Physics Letters
巻(号)
426(1-3)
ページ
204-208
抄録
Photoabsorption properties of titanium(IV) oxide powders were investigated by photoacoustic (PA) spectroscopy. The photoacoustic spectra obtained under steady-state ultraviolet irradiation showed appearance and growth of two kinds of PA signal bands, which were attributable to trivalent titanium species (Ti3+) and trapped holes or surface peroxide species. The saturation limit of the PA signal was estimated by analyzing the time course of Ti3+ signals and compared to the density of Ti3+ determined by a photochemical method. The results suggest that the photoacoustic spectroscopic technique is a feasible alternative method for estimation of Ti3+ as an empirical measure of defect density.
資源タイプ
学術雑誌論文
出版タイプ
Accepted Manuscript
PISSN
0009-2614
関連情報
URI
http://www.sciencedirect.com/science/journal/00092614
関連情報 (isVersionOf)
出版社版DOI
https://doi.org/10.1016/j.cplett.2006.06.001