Effect of TiO2 on the photocatalytic properties of bismuth oxide.

Effect of TiO2 on the photocatalytic properties of bismuth oxide.

Environmental technology (2014-04-08)

Gourav Singla, K Singh

PMID24701951

ABSTRACT

Bi2-xTixO3+x/2 (x = 0.05, 0.10 and 0.15) photocatalysts are prepared by solid-state technique. The band gap of the prepared sample was estimated from the onset of UV-Vis absorption spectra. The photocatalytic activities of as prepared samples are investigated under UV light irradiation for the decomposition of methyl orange (MO). It has been observed that the rate of decomposition of MO increased with increasing Ti4+ content in the present samples. Moreover, it shows better photocatalytic activity than undoped Bi2O3 and TiO2. The lowest band gap is observed for x = 0.15 sample, i.e. 2.55 eV, which also showed the highest photocatalytic activity in the present sample.

MATERIALS

Product Number

Brand

Product Description

700347

Sigma-Aldrich

Titanium(IV) oxide, mixture of rutile and anatase, nanoparticles, <150 nm particle size (volume distribution, DLS), dispersion, 40 wt. % in H₂O, 99.5% trace metals basis

68250

Sigma-Aldrich

Methyl Orange, for microscopy (Hist.), indicator (pH 3.0-4.4)

224227

Sigma-Aldrich

Titanium(IV) oxide, rutile, powder, <5 μm, ≥99.9% trace metals basis

114510

Sigma-Aldrich

Methyl Orange, ACS reagent, Dye content 85 %

204730

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204757

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637262

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634662

Sigma-Aldrich

Titanium(IV) oxide, mixture of rutile and anatase, nanopowder, <100 nm particle size (BET), 99.5% trace metals basis

635057

Sigma-Aldrich

Titanium(IV) oxide, rutile, <001>, (single crystal substrate), ≥99.9% trace metals basis, L × W × thickness 10 mm × 10 mm × 0.5 mm

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14027

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14021

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