Electronic structure and optical properties of V-doped Bi^sub 4^Ti^sub 3^O^sub 12^ nanoparticles

Pure and V5+-doped Bi4Ti3O12 (BTO) photocatalysts were prepared by sol-gel routine and subsequent hydrothermal synthesis. The samples were developed into the platelike microparticles with the exposed (001) facets. The crystalline phases were verified via the XRD measurement. The surface characterist...

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Bibliographic Details
Published inJournal of alloys and compounds Vol. 695; p. 2224
Main Authors Gu, Daguo, Qin, Yingying, Wen, Yongchun, Li, Tie, Qin, Lin, Seo, Hyo Jin
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier BV 25.02.2017
Subjects
Absorption spectra
Catalytic activity
Crystal structure
Electromagnetic absorption
Electronic structure
Microparticles
Nanoparticles
Optical properties
Photocatalysis
Photocatalysts
Pollutants
Rhodamine
Sol-gel processes
Studies
Surface properties
Titanium
X ray photoelectron spectroscopy
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Summary:Pure and V5+-doped Bi4Ti3O12 (BTO) photocatalysts were prepared by sol-gel routine and subsequent hydrothermal synthesis. The samples were developed into the platelike microparticles with the exposed (001) facets. The crystalline phases were verified via the XRD measurement. The surface characteristics of the photocatalysts were studied by TEM, SEM, BET, EDX and XPS measurements. The UV-vis optical absorption spectra showed that the V-doped photocatalysts exhibit an obvious red shiftin the visible light absorption band compared with the pure BTO. Rhodamine B (RhB) dye solution was used as the model organic pollutants to verify the influence of V-doping on the photocatalytic activity. The 10 mol % V-doped BTO showed efficient photocatalytic ability. The photocatalytic activities and mechanisms were discussed on the crystal structure characteristics and the measurements such as EES and XPS results.
ISSN:0925-8388
1873-4669