Environmental Science and Pollution Research

, Volume 25, Issue 27, pp 27122–27132 | Cite as

Novel magnetic graphene oxide functionalized cyanopropyl nanocomposite as an adsorbent for the removal of Pb(II) ions from aqueous media: equilibrium and kinetic studies

  • Mohammad Ali Gabris
  • Binta Hadi Jume
  • Mostafa Rezaali
  • Syed ShahabuddinEmail author
  • Hamid Rashidi NodehEmail author
  • Rahman Saidur
Research Article


This work presents the synthesis of the novel silica-cyanopropyl functionalized magnetic graphene oxide (MGO/SiO2-CN) hybrid nanomaterial derived by sol–gel method as a cheap efficient magnetic sorbent for the removal of extremely hazardous lead ions from aqueous media. The integration of the magnetic property, the carbon substrate, and the nitrile (–C ≡ N) containing organic grafted silica matrix promoted the adsorption capability against lead ions along with its simple synthesis recovery and low cost. The prepared nanocomposite was comprehensively characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. Adsorption of lead was found to be pH dependent because of the charged nature of both analyte and adsorbent surface. Adsorption experiments were conducted under the optimum conditions, and the obtained experimental data from atomic absorption spectroscopy were analyzed using the popular isothermal models namely Langmuir, Freundlich, and Dubinin–Radushkevich isotherms as well as kinetically studied and evaluated for adsorption standard free energy (E). The experimental results have demonstrated the enhanced adsorption capability of the proposed sorbent nanocomposite for lead ion removal with the maximum adsorption capacity of 111.11 mg/g at pH 5.0. The proposed mechanism of lead adsorption was mainly attributed to the complexation of lead positive ions with the grafted –C ≡ N bond. The synergistic effect of the combination of three components (i.e., the magnetic graphene oxide matrix, the triple bond containing organic moiety, and the inorganic porous silica framework) excelled the adsorption capability and proved to be a good candidate as adsorbent for the removal of lead ions.


Silica-cyanopropyl Magnetic graphene oxide Lead removal Adsorption isotherm and kinetic 



Mr. Mohammad Ali and Dr. Hamid would like to thank Professor M. Chicharro Santamaría from Universidad Autónoma de Madrid (Spain) for his generosity for checking the manuscript and providing valuable comments to improve the quality of manuscript.

Funding information

Financial support was provided by Research Centre for Nano-Materials and Energy Technology (RCNMET), Sunway University, Malaysia and University of Tehran.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Chemistry, Faculty of ScienceUniversity of TehranTehranIran
  2. 2.Department of chemistry, Preparatory SchoolAljoup UniversitySakakaSaudi Arabia
  3. 3.Department of Civil and Environmental EngineeringQom University of TechnologyQomIran
  4. 4.Research Centre for Nano-Materials and Energy Technology (RCNMET), School of Science and TechnologySunway UniversityPetaling JayaMalaysia
  5. 5.Department of Food science and Technology, Faculty of Food Industry and AgricultureStandard Research Institute (SRI)KarajIran
  6. 6.Department of EngineeringLancaster UniversityLancasterUK

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