Novel magnetic graphene oxide functionalized cyanopropyl nanocomposite as an adsorbent for the removal of Pb(II) ions from aqueous media: equilibrium and kinetic studies
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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.
KeywordsSilica-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.
Financial support was provided by Research Centre for Nano-Materials and Energy Technology (RCNMET), Sunway University, Malaysia and University of Tehran.
- Arbabi M, Hemati S, Amiri M (2015) Removal of lead ions from industrial wastewater: a review of removal methods. International Journal of Epidemiologic Research 2(2):105–109Google Scholar
- Arm AR (2017) Removal of heavy metals from industrial waste water by biomass-based materials: a review. J Pollut Eff Cont 5. https://doi.org/10.4172/2375-4397.1000180
- Duan S, Tang R, Xue Z, Zhang X, Zhao Y, Zhang W, Sun D (2015) Effective removal of Pb (II) using magnetic Co0.6 Fe2.4 O4 micro-particles as the adsorbent: synthesis and study on the kinetic and thermodynamic behaviors for its adsorption. Colloids Surf A Physicochem Eng Asp 469:211–223CrossRefGoogle Scholar
- Gunatilake SK (2015) Methods of removing heavy metals from industrial wastewater. J Multi Eng Sc St (JMESS) 1(1):2912–1309Google Scholar
- Hsu YG, Lin FJ (2000) Organic-inorganic composite materials from acrylonitrile-butadiene-styrene copolymers (ABS) and silica through anin situ sol-gel process. J Appl Polym Sci 75(2):275–283. https://doi.org/10.1002/(SICI)1097-4628(20000110)75:2<275::AID-APP10>3.0.CO;2-I CrossRefGoogle Scholar
- Mohammadi Nodeh MK, Soltani S, Shahabuddin S, Rashidi Nodeh H, Sereshti H (2018) Equilibrium, kinetic and thermodynamic study of magnetic polyaniline/graphene oxide based nanocomposites for ciprofloxacin removal from water. J Inorg Organomet Polym Mater 28(3):1226–1234. https://doi.org/10.1007/s10904-018-0782-2 CrossRefGoogle Scholar
- Rashidi Nodeh H, Wan Ibrahim WA, Ali I, Sanagi MM (2016) Development of magnetic graphene oxide adsorbent for the removal and preconcentration of As(III) and As(V) species from environmental water samples. Environ Sci Pollut Res 23(10):9759–9773. https://doi.org/10.1007/s11356-016-6137-z CrossRefGoogle Scholar
- Shahabuddin S, Tashakori C, Kamboh A, Sotoudehnia Z, Saidur R, Nodeh HR, Bidhendi ME (2018) Environmental science. Environ Sci Water Res & Technol. https://doi.org/10.1039/C7EW00552K
- Slone CS, Weinberger DA, Mirkin CA (1999) The transition metal coordination chemistry of hemilabile ligands. Prog Inorg Chem 233–350Google Scholar
- Soutoudehnia Korrani Z, Wan Ibrahim WA, Rashidi Nodeh H, Aboul-Enein HY, Sanagi MM (2016) Simultaneous preconcentration of polar and non-polar organophosphorus pesticides from water samples by using a new sorbent based on mesoporous silica. J Sep Sci 39(6):1144–1151. https://doi.org/10.1002/jssc.201500896 CrossRefGoogle Scholar