Synthesis and Characterization of Magnetized Photocatalyst Fe3O4/SiO2/TiO2 by Heteroagglomeration Method

6th Asian Physics Symposium

Dewi, Sari Hasnah^1,2 ; Sutanto^1 ; Fisli, A.^2 ; Wardiyati, S.^2

Chemistry Dept, Pakuan University, Bogor City, Indonesia^1

Center for Science and Technology of Advanced Materials, National Nuclear Energy Agency, Kawasan Puspiptek Serpong

15314, Indonesia^2

关键词: Fe3O4 nanoparticles;    Fourier transform infrared;    Magnetic photocatalysts;    Precipitation methods;    Structure and morphology;    Synthesis and characterizations;    TiO2 nano-particles;    Vibrating sample magnetometer;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/739/1/012113/pdf
DOI  :  10.1088/1742-6596/739/1/012113

来源: IOP

【 摘 要 】

Magnetic photocatalysts Fe3O4/SiO2/TiO2have been prepared using heteroagglomeration method. Synthesis of magnetic photocatalyst Fe3O4/SiO2/TiO2was carried out through four stages : (1) synthesis of photocatalyst TiO2 nanoparticles by TiCl4 coprecipitation in ammonia solution, (2) synthesis of Fe3O4 nanoparticles through precipitation method using a mixture of Fe (III) / Fe (II) (2: 1 mole ratio) in ammonia solution, (3) coating with SiO2through hydrolysis of silicate ion, (4) in the final stage, Fe3O4/SiO2was mixed with TiO2in hetero-agglomeration manner. Structure and morphology of resultan composites have been investigated by X-ray diffraction (XRD), Vibrating sample magnetometer (VSM), Fourier transform infrared (FTIR) and Transmission electron microscopy (TEM) were confirmed that composite Fe3O4/SiO2/TiO2succefully synthesized. The functionality photocatalyst of the particles was tested by eliminating of methylene blue (MB) under UV light. The result showed the magnetite photocatalyst Fe3O4/SiO2/TiO2has phototacalytic and absorbtion properties so that it has good performance at dyes removal in water higher than pure TiO2, and capable to perform repeatition process at least 4 times.