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

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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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Publication details

The article was received on 31 Jul 2018, accepted on 06 Sep 2018 and first published on 06 Sep 2018


Article type: Communication
DOI: 10.1039/C8CP04885A
Citation: Phys. Chem. Chem. Phys., 2018, Advance Article
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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, Advance Article , DOI: 10.1039/C8CP04885A

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