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.

MATERIALI

N° Catalogo

Marchio

Descrizione del prodotto

718467

Sigma-Aldrich

Titanium(IV) oxide, nanopowder, 21 nm primary particle size (TEM), ≥99.5% trace metals basis

637254

Sigma-Aldrich

Titanium(IV) oxide, anatase, nanopowder, <25 nm particle size, 99.7% trace metals basis

14027

Sigma-Aldrich

Titanium(IV) oxide, puriss., meets analytical specification of Ph. Eur., BP, USP, 99-100.5%

232033

Sigma-Aldrich

Titanium(IV) oxide, anatase, powder, 99.8% trace metals basis

14021

Sigma-Aldrich

Titanium(IV) oxide, ReagentPlus^®, ≥99%

224227

Sigma-Aldrich

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

223891

Sigma-Aldrich

Bismuth(III) oxide, ReagentPlus^®, powder, 10 μm, 99.9% trace metals basis

248576

Sigma-Aldrich

Titanium(IV) oxide, anatase, powder, −325 mesh, ≥99% trace metals basis

637262

Sigma-Aldrich

Titanium(IV) oxide, rutile, nanopowder, <100 nm particle size, 99.5% trace metals basis

634662

Sigma-Aldrich

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

202827

Sigma-Aldrich

Bismuth(III) oxide, powder, 99.999% trace metals basis

637017

Sigma-Aldrich

Bismuth(III) oxide, nanopowder, 90-210 nm particle size, 99.8% trace metals basis

114510

Sigma-Aldrich

Methyl Orange, ACS reagent, Dye content 85 %

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

265462

Sigma-Aldrich

Bismuth, powder, −100 mesh, 99% trace metals basis

68250

Sigma-Aldrich

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

204757

Sigma-Aldrich

Titanium(IV) oxide, rutile, ≥99.98% trace metals basis

264008

Sigma-Aldrich

Bismuth, powder, −100 mesh, ≥99.99% trace metals basis