Abstract
A simple one-step sonochemical synthesis method for the preparation of boron doped TiO2 (B-TiO2) nanoparticles at low temperatures has been developed. The B-TiO2 nanoparticles were synthesised through sonication of a solution of tetraisopropyl titanium and boric acid in ethanol at 70°C for 150 min. The as prepared B-TiO2 sample was characterised using X-ray diffraction, X-ray photoelectron spectroscopy, Brunauer–Emmett–Teller surface area and ultraviolet–visible absorption spectroscopy. The average crystallite size of anatase B-TiO2 is 6·2 nm. B doping of TiO2 shifted the absorption edge towards higher wavelength. The band energy of B-TiO2 was estimated as 2·74 eV. The photocatalytic activity of the as prepared photocatalyst was evaluated via the photodegradation of methylene blue dye. The results show that the B-TiO2 nanoparticles prepared via the sonochemical method exhibit an excellent photocatalytic activity under simulated sunlight.
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