Munasir, Taufiq, A. , Teraningtyas, A. , Kusumawati, D.H. and Supardi, Z.A.I. 2021. Nanosized Fe3O4/SiO2 core-shells fabricated from natural sands, magnetic properties, and their application for dye adsorption. Engineering and Applied Science Research. 49, 3 (Nov. 2021), 340–352.