Controllable preparation and heavy‐metal‐ion adsorption of lignosulfonate‐polypyrrole composite nanosorbent

Abstract

Lignosulfonate‐polypyrrole (LS‐PPY) composite nanospheres were prepared facilely via an in situ polymerization of pyrrole monomers in the presence of lignosulfonate as a dispersant and ammonium persulfate as an oxidant. The LS‐PPY composite was characterized with Fourier Transform infrared spectroscopy (FTIR), thermogravimetric analysis, wide‐angle X‐ray diffraction (XRD), scanning electron microscopy (SEM), field‐emission SEM, and transmission electron microscopy. Uniform LS‐PPY solid composite nanospheres with an average diameter of 154 nm were obtained. The LS‐PPY composite nanospheres were applied to adsorption of Ag(I) and Pb(II) ions from aqueous solutions. Maximum adsorption capacities of Ag(I) and Pb(II) were up to 759.3 mg g−1 and 207.5 mg g−1, respectively. Furthermore, the silver ions can be reduced to metallic silver nanowires through a redox reaction between the LS‐PPY composite nanospheres and the silver ions. A productive no‐template route to fabrication of LS‐PPY composite nanospheres with controllable size and heavy‐metal‐ion adsorption ability was achieved. POLYM. COMPOS., 36:1546–1556, 2015. © 2014 Society of Plastics Engineers

“Waste to Wealth”: Lignin as a Renewable Building Block for Energy Harvesting/Storage and Environmental Remediation

“…The size of the LS‐PANi particles decreased after modification of bare PANi with LS, increasing their surface area and the number of adsorption sites. Similarly, Luo and Lü synthesized LS–PPy composite nanospheres by an in situ polymerization of pyrrole monomers in the presence of LS . The LS–PPy nanospheres exhibited a uniform size, with an average diameter of 154 nm, which possessed excellent absorption capacities for Ag + (759.3 mg g −1 ) and Pb 2+ ions (207.5 mg g −1 ) from aqueous solutions.…”

Facile synthesis of magnetic polypyrrole composite nanofibers and their application in Cr(VI) removal

“…It is more intriguing to explore the possibility of extending the application of this conducting polymer. Recently, some studies have found that PPy can be used as an efficient absorbent for removal of heavy metal ions from waste water owing to their rich functional groups . However, to some extent, the separation of PPy absorbent is difficult.…”

One‐Pot Synthesis of Magnetic Polypyrrole Nanotubes for Adsorption of Cr(VI) in Aqueous Solution

“…e coating of PPy can avoid agglomeration and oxidation of MNPs. Furthermore, PPy has good adsorption properties for Cr(VI) from wastewater owing to their rich functional groups and environmental stability [17][18][19].…”