Siti Nur Halizah, S. Sunaryono, Nandang Mufti, Yunan Amza Muhammad, Ahmad Taufiq
Synthesis of Fe3O4@ZnO core-shell nanoparticles has been successfully carried out by using the coprecipitation method based on natural iron sand. Meanwhile, the Poly-Diallyl Dimethyl Ammonium Chloride (DADMAC) polymer was successfully compiled into the Fe3O4@ZnO core-shell nanoparticles, which were useful for accelerating precipitation and increasing performance in photodegradation. The samples were characterized by using X-ray Diffraction (XRD), Transmission Electron Microscopy (TEM), Fourier-Transform Infrared (FTIR), Vibrating Sample Magnetometer (VSM), and Ultraviolet-Visible (UV-Vis) spectrophotometer. TEM characterization informed that the morphology of the Fe3O4@ZnO nanoparticles formed a core-shell structure. This case was evidenced from the results of the XRD analysis, which showed X-ray diffraction patterns with Fe3O4 and ZnO phases without other phases. Furthermore, analysis of VSM data showed the results of the coercivity field (Hc), saturation magnetization (Ms), and remanent magnetization (Mr), which tended to be smaller as the molarity of zinc acetate dihydrate increased. Furthermore, the FTIR results showed that the functional groups produced represented the presence of Poly-DADMAC polymers. However, the results of UV-Vis spectrophotometer analysis showed that the increase in the composition of Poly-DADMAC polymers composited with the Fe3O4@ZnO core-shell nanoparticles could increase the degradation potency in methylene orange solution from 38.61% to 51.84%. The Poly-DADMAC polymer could improve the potential of photodegradation in removing water pollution contamination. © 2020 Author(s).
Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang No. 5, Malang, 65145, Indonesia; Center of Advanced Materials for Renewable Energy (CAMRY), Universitas Negeri Malang, Jl. Semarang No. 5, Malang, 65145, Indonesia
