Time-resolved infrared absorption study of nine TiO2 photocatalysts

Akira Yamakata; Taka aki Ishibashi; Hiroshi Onishi

doi:10.1016/j.chemphys.2007.05.010

Time-resolved infrared absorption study of nine TiO₂ photocatalysts

Akira Yamakata, Taka aki Ishibashi, Hiroshi Onishi

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Electron kinetics of nine TiO₂ catalysts were compared in a microsecond time domain. Each catalyst was band-gap excited with an UV light pulse, and electron-induced absorption of mid infrared light was observed as a function of time delay. The probability of electron-hole recombination in the bulk, electron attachment to adsorbed oxygen, and hole attachment to adsorbed methoxy species was estimated.

Original language	English
Pages (from-to)	133-137
Number of pages	5
Journal	Chemical Physics
Volume	339
Issue number	1-3
DOIs	https://doi.org/10.1016/j.chemphys.2007.05.010
Publication status	Published - Oct 15 2007
Externally published	Yes

Keywords

Charge transfer
Infrared absorption
Kinetics
Photocatalysis
Recombination
TiO

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

Access to Document

10.1016/j.chemphys.2007.05.010

Cite this

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title = "Time-resolved infrared absorption study of nine TiO2 photocatalysts",

abstract = "Electron kinetics of nine TiO2 catalysts were compared in a microsecond time domain. Each catalyst was band-gap excited with an UV light pulse, and electron-induced absorption of mid infrared light was observed as a function of time delay. The probability of electron-hole recombination in the bulk, electron attachment to adsorbed oxygen, and hole attachment to adsorbed methoxy species was estimated.",

keywords = "Charge transfer, Infrared absorption, Kinetics, Photocatalysis, Recombination, TiO",

author = "Akira Yamakata and Ishibashi, {Taka aki} and Hiroshi Onishi",

note = "Funding Information: Hiromi Yamashita encouraged the authors to join the standard catalyst project. This work was supported by CREST of the Japan Science and Technology Agency and by a Grant-in-Aid for Scientific Research from the Ministry of Education, Sciences, Sports and Culture of Japan (No. 17750117).",

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T1 - Time-resolved infrared absorption study of nine TiO2 photocatalysts

AU - Yamakata, Akira

AU - Ishibashi, Taka aki

AU - Onishi, Hiroshi

N1 - Funding Information: Hiromi Yamashita encouraged the authors to join the standard catalyst project. This work was supported by CREST of the Japan Science and Technology Agency and by a Grant-in-Aid for Scientific Research from the Ministry of Education, Sciences, Sports and Culture of Japan (No. 17750117).

PY - 2007/10/15

Y1 - 2007/10/15

N2 - Electron kinetics of nine TiO2 catalysts were compared in a microsecond time domain. Each catalyst was band-gap excited with an UV light pulse, and electron-induced absorption of mid infrared light was observed as a function of time delay. The probability of electron-hole recombination in the bulk, electron attachment to adsorbed oxygen, and hole attachment to adsorbed methoxy species was estimated.

AB - Electron kinetics of nine TiO2 catalysts were compared in a microsecond time domain. Each catalyst was band-gap excited with an UV light pulse, and electron-induced absorption of mid infrared light was observed as a function of time delay. The probability of electron-hole recombination in the bulk, electron attachment to adsorbed oxygen, and hole attachment to adsorbed methoxy species was estimated.

KW - Charge transfer

KW - Infrared absorption

KW - Kinetics

KW - Photocatalysis

KW - Recombination

KW - TiO

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