Issue 38, 2018
From the journal:

Physical Chemistry Chemical Physics

Mid-infrared absorption of trapped electrons in titanium(iv) oxide particles using a photoacoustic FTIR technique†

Naoya Murakami ORCID logo *ab  and  Tatsuki Shinodab  

* Corresponding authors

a Department of Applied Chemistry, Faculty of Engineering, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550, Japan
E-mail: murakami@life.kyutech.ac.jp

b Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu-ku, Kitakyushu 808-0196, Japan

Abstract

Mid-infrared absorption of titanium(IV) oxide (TiO2) under ultraviolet (UV) irradiation was studied by Fourier transform infrared spectroscopy using a photoacoustic (PA) technique. UV irradiation induced an upward shift of the PA spectra, which is due to the trivalent titanium (Ti3+) species produced by electron accumulation. The PA spectra under UV irradiation mainly depend on the crystal structure, indicating that the energy levels of Ti3+ are largely determined by crystal structures.

Graphical abstract: Mid-infrared absorption of trapped electrons in titanium(iv) oxide particles using a photoacoustic FTIR technique

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Article information

DOI
https://doi.org/10.1039/C8CP04885A
Article type
Communication
Submitted
31 Jul 2018
Accepted
06 Sep 2018
First published
06 Sep 2018

Phys. Chem. Chem. Phys., 2018,20, 24519-24522

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Mid-infrared absorption of trapped electrons in titanium(IV) oxide particles using a photoacoustic FTIR technique

N. Murakami and T. Shinoda, Phys. Chem. Chem. Phys., 2018, 20, 24519 DOI: 10.1039/C8CP04885A

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