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Preparation and characterisation of visible-light-driven BaCo_0.5Y_0.5O₃ photocatalyst
by R.M. Mohamed, K. Mori, T. Ohmichi, H. Yamashita
International Journal of Nanomanufacturing (IJNM), Vol. 4, No. 1/2/3/4, 2009
Abstract: In this work, the synthesis of BaCo_0.5Y_0.5O₃ visible-light-driven photocatalyst was studied via the sol-gel method. When the calcinations temperature was 1000°C, a pure perovskite phase was obtained. The particle size and crystallinity of BaCo_0.5Y_0.5O₃ powders markedly increased with a rise in the calcination temperature. The band gap of BaCo_0.5Y_0.5O₃ calculated using the UV-visible spectra was found to be less than that of titania. BaCo_0.5Y_0.5O₃ was shown to posses photocatalytic activity under visible light irradiation. The activity of BaCo_0.5Y_0.5O₃ depended strongly on the synthesis temperature.

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