Abstract
A new nanocomposite, lignosulfonate–graphene oxide–polyaniline (LS-GO-PANI), was prepared from aniline via an in situ polymerization in the presence of lignosulfonate and graphene oxide. The morphology and structure of the LS-GO-PANI ternary nanocomposite were characterized by FE-SEM, TEM, FTIR, and UV–vis spectroscopy. Furthermore, the adsorption property of Pb(II) ions onto the nanocomposite was studied. The effects of adsorption time, initial pH value, adsorbent concentration, and initial adsorbate concentration on the adsorption of Pb(II) ions in aqueous solution were investigated by batch experiments. The LS-GO-PANI ternary nanocomposite showed an adsorption capacity as high as 216.4 mg g–1 for Pb(II) ions at 30 °C. Moreover, the adsorption kinetic and equilibrium data were described well with the pseudo-second-order and Langmuir isotherm models for the Pb(II) ions adsorption process. The results showed that the LS-GO-PANI ternary nanocomposite has great potential application in removal of Pb(II) ion...
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