Enhanced Performance of Chitosan via a Novel Quaternary Magnetic Nanocomposite Chitosan/Grafted Halloysitenanotubes@ZnγFe3O4 for Uptake of Cr (III), Fe (III), and Mn (II) from WastewaterMahmoud F. Mubarak, Abeer El Shahawy, Hanan A. Ahmed et al.|Polymers|2021Cited by 34