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Synthesis of a new nanocomposite based‐on graphene‐oxide for selective removal of Pb 2+ ions from aqueous solutions
Author(s) -
Ensafi Avval Mahsa,
Moghadam Peyman Najafi,
Baradarani Mohammad Mehdi
Publication year - 2019
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.24728
Subject(s) - nanocomposite , materials science , adsorption , graphene , thermogravimetric analysis , oxide , aqueous solution , metal ions in aqueous solution , fourier transform infrared spectroscopy , chemical engineering , inorganic chemistry , nuclear chemistry , composite material , metal , organic chemistry , nanotechnology , chemistry , metallurgy , engineering
In this study, a new nanocomposite was synthesized based on graphene‐oxide (GO) for the selective removal of Pb 2+ ions from aqueous solutions. In the first step, the GO was synthesized from graphite. Then amino‐telechelic poly (hexamethylenediisocyanate‐co‐propylene glycol) (THMDI‐PG) was synthesized. Finally, The GO was reacted with the THMDI‐PG to obtain the final nanocomposite. The prepared nanocomposite was then used as the heavy metal ions adsorbent in Pb 2+ and binary ionic metal media and showed a selective behavior toward the Pb 2+ ions. The abundant oxygen‐containing groups on the surfaces of nanocomposite played an important role in Pb 2+ ion adsorption on GO and the adsorption was dependent on pH values and independent of ionic strength. Different analysis such as Fourier transform infrared, thermogravimetric analysis, and scanning electron microscopy were carried out to characterize the prepared nanocomposite. Moreover, the effect of various adsorption parameters such as pH, adsorbent dose, adsorption time, temperature, agitation speed, and initial concentration of the ions were investigated and optimized. The obtained results showed an efficient performance of the prepared nanocomposite for the removal of the Pb 2+ ions. POLYM. COMPOS., 40:730–737, 2019. © 2018 Society of Plastics Engineers