Anatase TiO 2 sheet-assisted synthesis of Ti 3+ self-doped mixed phase TiO 2 sheet with superior visible-light photocatalytic performance: Roles of anatase TiO 2 sheet

On the basis of measurements, such as field emission scanning electron microscope, UV-Vis diffuse reflectance spectra, X-ray diffraction, electron paramagnetic resonance, photoluminescence spectra, and photocurrent measurements, the roles of anatase TiO sheet on synthesizing Ti self-doped mixed phas...

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Bibliographic Details
Published inJournal of colloid and interface science Vol. 490; p. 774
Main Authors Zhang, Xiaojie, Zuo, Guoqing, Lu, Xin, Tang, Changqing, Cao, Shuo, Yu, Miao
Format Journal Article
LanguageEnglish
Published United States 15.03.2017
Subjects
Photocatalytic CO reduction
Visible light
Ti(3+) self-doped TiO
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Summary:On the basis of measurements, such as field emission scanning electron microscope, UV-Vis diffuse reflectance spectra, X-ray diffraction, electron paramagnetic resonance, photoluminescence spectra, and photocurrent measurements, the roles of anatase TiO sheet on synthesizing Ti self-doped mixed phase TiO nanosheets (doped TiO (A/R, TiO (A))) and on improving the performance for photocatalytic CO reduction were explored systematically. High surface area anatase TiO nanosheets (TiO (A)) as a substrate, structure directing agent, and inhibitor, mediated the synthesis of Ti self-doped mixed phase TiO nanosheets. Addition of TiO (A) significantly improved not only visible light absorption of doped TiO (A/R, TiO (A)), but also the efficiency of photo-excited charges separations due to the existence of interfacial regions of anatase-rutile TiO junctions. Finally, a possible mechanism for interfacial charge transfer at the anatase-rutile TiO interface and for photocatalytic CO reduction over Pt loaded doped TiO (A/R, TiO (A)) were proposed.
ISSN:1095-7103