Electronic band structure of titanium dioxide

Daude, Nathalie; Gout, C.; Jouanin, C.

doi:10.1103/physrevb.15.3229

Cited by 409 publications

(250 citation statements)

References 15 publications

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“…At the current time, the limited available data make it difficult to make comparisons. The published band structure of rutile structured TiO 2 shows the band dispersion in the [110], [100] and [001] directions [14]. Based on this, we would say that the (110) and (100) surfaces are expected to be more reactive than the (001) surface.…”

Section: Discussionmentioning

confidence: 99%

The origin of photochemical anisotropy in SrTiO3

2007

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Photochemical reactions that deposit insoluble products on catalytic surfaces have been used to probe the anisotropy of the reactivity of SrTiO 3 microcrystals. Both reduced and oxidized products are formed preferentially on {100} surfaces. It is proposed that the anisotropic photochemical reactivity can be explained by the electronic band structure. Because direct optical transitions for charge carriers having momentum vectors in the <100> direction overlap well with the spectral distribution of the absorbed photons, more photogenerated carriers are moving toward {100} surfaces than other surfaces and, as a result, {100} surfaces are more active. Knowledge of the electronic band structure and the spectral distribution of the light allows predictions to be made about the anisotropic reactivity of photocatalysts with other crystal structures.

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Section: Discussionmentioning

confidence: 99%

The origin of photochemical anisotropy in SrTiO3

2007

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“…7. An intense band observed at 2.95 eV (420 nm) can be assigned to the lowest indirect transition from the center to the edge of the Brillouin zone, Γ 1b X 1a [62]. Absence of intense bands in the low energy region of PL spectrum was an indication of lower concentration/ amount of structural defects.…”

Section: Comentioning

confidence: 99%

Shaped Co2+ doped TiO2 nanocrystals synthesized from nanotubular precursor: Structure and ferromagnetic behavior

et al. 2017

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“…3 shows the dependences (αhν) 1/r versus hν obtained for both the doped and pure R samples. It is known for the rutile single crystals that the extended absorption edge is formed by the two mechanisms: the lower edge at 3.03-3.05 eV corresponds to direct-forbidden transitions  3 - 1 [24] and the upper edge at 3.05-3.12 eV is attributed to indirect-allowed transitions  2 - 1 [25]. A dotted rectangle in Fig.…”

Section: Bandgapmentioning

confidence: 99%

Optical absorption of polydisperse TiO2: Effect of surface doping by transition metal cations

Kernazhitsky¹,

Shymanovska²,

Gavrilko³

et al. 2013

Ukr. J. Phys. Opt.

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) on the properties related to optical absorption. The metal-doped TiO 2 samples obtained by us have been characterised using an X-ray diffractometry, X-ray fluorescence analysis, a scanning electron microscopy, and a UV-visible absorption spectroscopy. It has been shown that the doping effects on the properties of anatase and rutile are quite different, being much stronger and complicated in the case of anatase. The anatase doped with Fe and Cr cations reveals a 'red' shift of the absorption edge and narrowing of the bandgap.

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Electronic band structure of titanium dioxide

Cited by 409 publications

References 15 publications

The origin of photochemical anisotropy in SrTiO3

The origin of photochemical anisotropy in SrTiO3

Shaped Co2+ doped TiO2 nanocrystals synthesized from nanotubular precursor: Structure and ferromagnetic behavior

Optical absorption of polydisperse TiO2: Effect of surface doping by transition metal cations

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