Enhancement of Sonocatalytic Activity and Stability of Magnetic LaFeO3/Fe3O4 Nanocomposites

3rd International Conference on Functional Materials Science 2016

Afifah, Nur^1,2 ; Saleh, Rosari^1,2

Departemen Fisika, Fakultas MIPA, Universitas Indonesia, Kampus UI Depok, Depok

16424, Indonesia^1

Integrated Laboratory of Energy and Environment, Fakultas MIPA, Universitas Indonesia, Kampus UI Depok, Depok

16424, Indonesia^2

关键词: Brunauer-emmett-teller surface areas;    Coprecipitation method;    Cubic spinel structure;    External magnetic field;    Good stability;    Recyclable catalyst;    Structural and magnetic properties;    Vibrating samples;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/196/1/012050/pdf
DOI  :  10.1088/1757-899X/196/1/012050

来源: IOP

【 摘 要 】

Recyclable catalyst using magnetic LaFeO3/Fe3O4nanocomposite has been successfully synthesized using co-precipitation method. The structural and magnetic properties of the samples were investigated using X-Ray Diffraction (XRD, Brunauer-Emmett-Teller (BET) surface area analysis, and Vibrating Sample Magnetomfeter (VSM) Spectroscopy. The XRD results revealed that the LaFeO3/Fe3O4nanocomposite shows orthorhombic and cubic spinel structure from LaFeO3and Fe3O4, respectively. The saturation magnetization of LaFeO3increases with the increasing of Fe3O4content in the nanocomposite. The sonocatalytic performance and recyclability of the sample were evaluated by degrading methylene blue (MB) as a model of organic pollutant. Compared to LaFeO3nanoparticles, the sonocatalytic activity of LaFeO3/Fe3O4nanocomposite showed better performance. The stability of the catalyst was also checked by removing the catalyst from the MB solution simply using an external magnetic field. The result shows that the sample has good stability.