Tea waste-supported hydrated manganese dioxide (HMO) for enhanced removal of typical toxic metal ions from water

Abstract

A novel composite sorbent with hydrated manganese oxide (HMO) (&lt;5 nm) highly dispersed on tea waste (TW), enjoying synergistic benefits from both materials, efficiently and selectively sorbed Pb(<sc>ii</sc>), Cd(<sc>ii</sc>), Cu(<sc>ii</sc>) and Zn(<sc>ii</sc>) from water.