%0 Journal Article
%T Visible-Light-Driven Photocatalytic Activity of Magnetic BiOBr/SrFe12O19 Nanosheets
%A Chenglun Liu
%A Jiankang Wang
%A Jiao Hu
%A Jun Yang
%A Longjun Xu
%A Songli Liu
%A Taiping Xie
%A Xiuyu Yin
%A Yuan Peng
%A Yuanzhen Lu
%J Archive of "Nanomaterials".
%D 2019
%R 10.3390/nano9050735
%X Magnetic BiOBr/SrFe12O19 nanosheets were successfully synthesized using the hydrothermal method. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), and UV-visible diffused reflectance spectra (UV-DRS), and the magnetic properties were tested using a vibration sample magnetometer (VSM). The as-produced composite with an irregular flaky-shaped aggregate possesses a good anti-demagnetization ability (Hc = 861.04 G) and a high photocatalytic efficiency. Under visible light (¦Ë > 420 nm) and UV light-emitting diode (LED) irradiation, the photodegradation rates of Rhodamine B (RhB) using BiOBr/SrFe12O19 (5 wt %) (BOB/SFO-5) after 30 min of reaction were 97% and 98%, respectively, which were higher than that using BiOBr (87%). The degradation rate of RhB using the recovered BiOBr/5 wt % SrFe12O19 (marked as BOB/SFO-5) was still more than 85% in the fifth cycle, indicating the high stability of the composite catalyst. Meanwhile, after five cycles, the magnetic properties were still as stable as before. The radical-capture experiments proved that superoxide radicals and holes were main active species in the photocatalytic degradation of RhB
%K BiOBr/SrFe12O19
%K photocatalyst
%K Rhodamine B
%K photodegradation rate
%K magnetic photocatalyst
%U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6567020/