Preparation of Ag/Fe3O4/graphene composites for wastewater removal via the photo-Fenton reaction

2nd International Conference on Current Progress in Functional Materials 2017

Taufik, A.^1 ; Saleh, R.^2

Department of Physics, Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Indonesia, Depok

16424, Indonesia^1

Integrated Laboratory of Energy and Environment, Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Indonesia, Depok

16424, Indonesia^2

关键词: Control experiments;    Cubic spinel structure;    Cubic structure;    Ferromagnetic behaviors;    Hydrothermal methods;    Photo-Fenton process;    Photo-Fenton reactions;    Vibrating sample magnetometer;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/496/1/012023/pdf
DOI  :  10.1088/1757-899X/496/1/012023

来源: IOP

【 摘 要 】

In this study, Ag/Fe3O4/graphene composites were used as catalysts for the removal of wastewater via the photo-Fenton reaction. The Ag/Fe3O4/graphene composites were successfully synthesized by the hydrothermal method. The Ag content was varied from 15 and 25 wt%. The structural properties of the samples were investigated by X-ray diffraction and Raman spectroscopy, and their magnetic properties were examined using a vibrating sample magnetometer. Structural analysis revealed the presence of an inverse-cubic spinel structure corresponding to Fe3O4. and a cubic structure corresponding to Ag. The presence of graphene was confirmed by the presence of the D- and G-bands at 1300 and 1500 cm-1 in the Raman spectra, respectively, and the magnetic properties of the samples indicated that Ag/Fe3O4/graphene exhibits a ferromagnetic behavior at room temperature. The photo-Fenton reaction was examined in terms of the degradation of methylene blue from an aqueous solution. Control experiments were carried out to investigate the effects of the H2O2, content and solution pH. The maximum degradation of methylene blue was observed with 4 mL of H2O2, and at pH 13, reflecting that Ag/Fe3O4/graphene composites demonstrate promise for wastewater removal via the photo-Fenton process.