Treatment of Wastewater from Methylene Blue Dye and E. Coli Bacteria by High-Performance Fe 3 O 4 /rGO/TiO 2 Nanocatalyst

Abstract The photocatalysis-based technology has an insight into decreasing the disadvantages of those traditional approaches and is identified as an appropriate way to eliminate dyes and bacteria from wastewater. In this work, Fe3O4/rGO/TiO2 photocatalyst material was synthesized by a simple and fast hydrothermal method. The photocatalyst process results showed that Fe3O4/rGO/TiO2 nanocomposite degraded methylene blue dye completely in 4 min. Also, Fe3O4/rGO/TiO2 nanocomposite was very efficient (4.92 log reduction value) for E. Coli bacteria inactivation in 60 min photocatalyst process. The superparamagnetic behavior of Fe3O4/rGO/TiO2 nanocomposite was investigated by VSM analysis which gives simple and fast separation from media to Fe3O4/rGO/TiO2 nanocatalyst. The structural and morphology properties of Fe3O4/rGO/TiO2 nanocomposite were studied by XRD, Raman, FT-IR, EDS, FESEM, and TEM analysis. The obtained results confirmed that Fe3O4/rGO/TiO2 nanocomposite is an efficient nanocatalyst for MB dye removal and water disinfection.