Pengaruh Doping Cobalt Terhadap Sifat Struktur Nanopartikel Oksida Besi Dan A…

ABSTRACT Magnetic nanoparticles such as hematite (α-Fe2O3) are used as a catalyst to degrade methylene blue in aqueous solution. Magnetic nanoparticles were obtained from natural sand in Logas Village, Kuantan Singingi Regency, Riau Province through a ball milling process. Natural sand was dried under the sun prior to the Iron Separator (ISS) Process. The iron oxide and non-iron oxide particl…