Effect of heat treatment on ultrasonic synthesized
bismuth ferrites: an effective visible light-driven
Hoang Phuc Nguyen
Yong Hyun Jo
Soo Wohn Lee
Received: 26 December 2016 / Accepted: 20 May 2017 / Published online: 17 July 2017
Ó Springer Science+Business Media B.V. 2017
Abstract Even though it is a potential visible-light responsive photocatalyst, the
application of BiFeO
(BFO) is restricted because of the presence of residual
impurities in the synthesis process. To alleviate this problem, in this work, BiFeO
was synthesized by the sonochemical method and calcined at different temperatures.
Morphologies and phases of the samples were evaluated by using powder X-ray
diffraction (XRD), transmission electron microscopy (TEM), and scanning electron
microscopy (SEM) techniques. UV–Vis diffuse reﬂectance spectroscopy (UV–Vis
DRS) was used to analyze the absorption properties. The photocatalytic activities of
the samples were evaluated via the photocatalytic degradation of rhodamine-B
(RhB) aqueous solution under simulated solar light irradiation. The results revealed
that the phase transformation from amorphous to crystalline phase has occurred
during heat treatment. The formation of pure BFO occurred only at about 600 °C,
indicating the importance of heat treatment during the synthesis process. On the
other hand, the decolorization of RhB solution was completed by pure BFO pho-
tocatalyst within 1 h of simulated solar light irradiation.
Special Issue of the 1st International Symposium on Photocatalysis at Fuzhou University.
Electronic supplementary material The online version of this article (doi:10.1007/s11164-017-3047-
8) contains supplementary material, which is available to authorized users.
& Tae-Ho Kim
& Soo Wohn Lee
Research Center for Eco Multi-Functional Nano Materials, Sun Moon University, Asan,
Republic of Korea
Department of Environmental and Bio-Chemical Engineering, Sun Moon University, Asan,
Republic of Korea
Res Chem Intermed (2017) 43:5113–5122