NGHIÊN CỨU KHẢ NĂNG ỨNG DỤNG VẬT LIỆU NANO COMPOSITE TỪ TÍNH TRONG XỬ LÝ MỘT SỐ CHẤT Ô NHIỄM HỮU CƠ TRONG NƯỚC

RESEARCH ON THE APPLICATION OF MAGNETIC COMPOSITE NANOMATERIAL IN TREATMENT OF SOME ORGANIC COMPOUNDS IN WATERIron oxide nanoparticles (Fe3O4) were synthesized by hydrothermal method, and coated with hydroxyapatite and chitosan by simple methods. After synthesis, these materials were characterized via physicochemical methods: X-ray diffraction, Fourier transform infrared spectroscopy (FT-IR), vibrating sample magnetometer (VSM), scanning electron microscopy (SEM/EDX) and Zeta phoremeter. The results show that the iron oxide particles were synthesized with nano-size, the material after coating with hydroxyapatite and chitosan still ensures the magnetism. These materials continue to be evaluated the ability to remove 2,4-D and chrysoidine in aqueous medium. The results show that the synthesized composite materials have the ability to selectively adsorb 2,4-D and chrysoidine, thereby showing the potential application of magnetic composite materials in the field of environmental remediation.