Nanozero-valent iron (NZVI) shows great potential in the remediation of water pollution, but its application is limited by instability and tendency to aggregate. To enhance dispersibility antioxidant properties NZVI, we prepared composites (SN) wrapping NZVI with sodium alginate (SA) for removal Pb(II) from water. Various characterization methods such as SEM-EDS, BET, XPS, FT-IR were used study...