CHẾ TẠO VẬT LIỆU HẤP PHỤ OXIT TỪ TÍNH NANO Fe3O4 PHÂN TÁN TRÊN BÃ CHÈ

Tóm tắt

   The removal of  Cr(VI) from aqueous solution by magnetic nanoparticles prepared and impregnated        on to tea waste (TW- Fe3O4) from agriculture biomass was investigated. Magnetic nanoparticles (Fe3O4) wereprepared by chemical precipitation of a Fe²⁺ and Fe³⁺ salts from aqueous solution by ammonia solution. The crystal structure of the materials was determined by X-ray diffraction spectrum. Surface characterictics of the materials were examined using scanning electron microscope SEM, transmission electron microscope (TEM) and Fourier Transform-Infrared Spectroscopy (FT-IR).  Keywords:  Adsorption; tea waste; materials; magnetic; nanoparticles.