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Nano zero-valent manganese (nZVMn,Mn0) was prepared through a borohydride reduction method and coupled with different oxidants (persulfate (S2O8-),hypochlorite (ClO-),or hydrogen peroxide (H2O2)) to remove thallium (Tl) from wastewater.The surface of Mn0 was readily oxidized to form a core-shell composite (MnOx@Mn0),which consists of Mn0 as the inner core and MnOx (MnO,Mn2O3,and Mn3O4) as the outer layer.When Mn0 was added alone,effective Tl(I) removal was achieved at high pH levels (＞12).The Mn0-H2O2 system was only effective in Tl(Ⅰ) removal at high pH (＞ 12),while the Mn0-S2O82-or Mn0-ClO-system had excellent Tl(Ⅰ) removal (＞96％) over a broad pH range (4-12).The Mn0-S2O82-oxidation system provided the best resistance to interference from an extal organic matrix.The isotherm of Tl(Ⅰ) removal through the Mn0-S2O82 system followed the Freundlich model.The Mn0 nanomaterials can activate persulfate to produce sulfate radicals and hydroxyl radicals.Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy suggested that oxidation-induced precipitation,surface adsorption,and electrostatic attraction are the main mechanisms for Tl(Ⅰ) removal resulting from the combination of Mn0 and oxidants.Mn0 coupled with S2O82-/ClO is a novel and effective technique for T1(I) removal,and its application in other fields is worthy of further investigation.