Preparation of Mesoporous Magnetic TiO2/CoFe2O4 Photocatalysts Using Ionic Liquid as Template Agent

Kai Wang; Lan Bo Di; Li Juan Zhang; Gui Fu Dong; Xiu Ling Zhang

doi:10.4028/www.scientific.net/AMM.345.201

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 345Preparation of Mesoporous Magnetic TiO2/CoFe2O4...

Preparation of Mesoporous Magnetic TiO₂/CoFe₂O₄ Photocatalysts Using Ionic Liquid as Template Agent

Abstract:

A simple sol-gel method using 1-butyl-3-methylimidazoliun tetrafluoroborate ([C₄MIM]BF₄) ionic liquid as template agent was used to prepared mesoporous magnetic TiO₂/CoFe₂O₄ photocatalysts (denoted as IL-TiO₂/CoFe₂O₄). The photocatalysts were characterized by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) analysis. The results showed that well crystallized anatase TiO₂ in IL-TiO₂/CoFe₂O₄ photocatalysts could be obtained when the calcination temperature was as low as 200 °C, and the phase transition temperature from anatase to rutile was increased to 800 °C. BET analysis showed that IL-TiO₂/CoFe₂O₄ was mesoporous structure. The photocatalytic activity of the samples was evaluated by photocatalytic degradation of methylene blue (MB). The results showed that photocatalytic activity of IL-TiO₂/CoFe₂O₄ was 6 times higher than that of TiO₂/CoFe₂O₄ when a low calcination temperature of 350 °C was used.