Synthesis of polypyrrole-modified Fe3O4/SiO2/TiO2 nanocomposite microspheres and their photocatalytic activity

被引：7
作者：
Han, Kwang-Hyok [1 ]
Kim, Yong-Ho [2 ]
Mun, Myong-Hak [3 ]
Yu, Ju-Hyon [2 ]
Han, Ryong-Huan [1 ]
机构：
[1] Kim Chaek Univ Technol, Dept Elect, Pyongyang 999093, North Korea
[2] Univ Sci, Dept Chem, Pyongyang 999091, North Korea
[3] KIM IL SUNG Univ, Dept Mech, Pyongyang 999092, North Korea
来源：
MATERIALS RESEARCH EXPRESS | 2022年 / 9卷 / 02期
关键词：
photocatalyst; polypyrrole; magnetic nanoparticles; core-shell; titanium dioxide; OXIDE NANOPARTICLES; DEGRADATION; FE3O4-AT-SIO2-AT-TIO2; COMPOSITES; POLYDOPAMINE; GRAPHENE; TIO2;
D O I：
10.1088/2053-1591/ac5195
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A polypyrrole-modified Fe3O4/SiO2/TiO2 composite material was successfully synthesized on the FST surface by in situ polymerization of pyrrole. Structural, morphological and magnetic response of Fe3O4/SiO2/TiO2/PPy(FST/PPy) were characterized by transmission electron microscopy, scanning electron microscopy, X-ray diffraction pattern, Fourier transform infrared spectroscopy and energy-dispersive X-ray spectroscopy, etc. Through SEM images, the crystal sizes of the prepared FST/PPy nanoparticles were determined to be about 110 nm. The catalytic activity of FST/PPy was evaluated by the degree of decomposition of rhodamine B under ultraviolet and visible light, respectively. FST/PPy had the photocatalytic activity under the action of the light: the degradation rate of rhodamine B reached 92.8% and 63.5% after 3 h of UV and Vis light irradiation, respectively. Especially, compared with FST, the degradation rate has shown obvious improvement under the action of Vis light. Furthermore, FST/PPy photocatalyst could be easily recycled using a magnet.
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页数：11
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