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http://dx.doi.org/10.9713/kcer.2020.58.3.486

Visible Light Photocatalytic Properties of Bismuth Ferrite Prepared By Sol-Gel Method  

Park, Byung-Geon (Department of Food and Nutrition, Kwangju Women's University)
Chung, Kyong-Hwan (Department of Environmental Engineering, Sunchon National University)
Publication Information
Korean Chemical Engineering Research / v.58, no.3, 2020 , pp. 486-492 More about this Journal
Abstract
The method for preparing a perovskite-type bismuth ferrite (BFO) photocatalyst which reacts to visible LED light and the characteristics of visible light photocatalysis were investigated. BFO was prepared according to the sol-gel method. The prepared BFO consisted mainly of BiFeO3 structure and formed a nano-sized crystal including Bi24Fe2O39 structure. The BFO nano crystallines were identified from the UV-visible diffuse reflectance spectra to absorb UV and visible light up to about 600 nm. The bandgap of the BFO determined from the diffuse reflectance spectrum was about 2.2 eV. Formaldehyde was decomposed by the photoreaction of BFO photocatalysts with the visible light LED lamps with wavelengths of 585 nm and 613 nm. The narrow bandgap of BFO led to elicit BFO photocatalytic activity in visible LED light.
Keywords
Bismuth ferrite; Photocatalyst; Visible light; Formaldehyde decomposition; LED lamp;
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