Preparation of macro-porous polyvinyl formaldehyde / multi-walled carbon nanotubes (PVF/MWCNTs) foam was done via one step reaction during acetalization of polyvinyl alcohol (PVA).The as-prepared PVF/MWCNTs composite was used as an eco-friendly, easy recovery sorbets for Pb (II) from aqueous medium.Fourier transform infrared (FTIR), and high-resolution scanning electron microscopy (HRSEM) were use...