Newly MOF-Graphene Hybrid Nanoadsorbent for Removal of Ni(II) from Aqueous Phase
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Cu(tpa)·(DMF) (Cu terephthalic acid Dimethyl formamide) MOF-5 and its hybrids have been successfully synthesized by hydrothermal method and have been used as a nano adsorbent for heavy metal removal from waste water. The present work focuses on the transient adsorption of Ni(II) by Cu(tpa)·(DMF)MOF-5 and its hybrid with different graphene concentrations. MOF-5 was synthesized by terephthalate ligand and copper cores. Adsorption experiments were accomplished in initial concentration of Ni(II) 300 ppm and 100 ml volume of solution, 25 mg of adsorbent and Room temperature. The XRD analysis of synthesized nano adsorbent (MOF-5 and all other hybrids) are compared to analyze the main factors and features. The results of scanning electron microscopy (SEM) of MOF-5 and MOF-5–Graphene hybrid 30% show that graphene layers behave as dividers and place between platelets of MOF-5Cu. Removal percentage of Ni(II) by various adsorbents, MOF-5Cu, 10% hybrid of MOF-5Cu–Graphene, 20% hybrid, 30% hybrid, 40% hybrid are approximately, 85, 86, 90, 96, 94%, respectively. Also, pseudo first and second order kinetic models studied to obtain the adsorption treatment of MOF-5Cu–Graphene hybrid 30% and it is found that the pseudo second order kinetic model is more reasonable for this adsorbent. Our results indicate that MOF-5Cu and its hybrid with graphene have great potential in removing Ni(II) ions from aqueous environment.
KeywordsGraphene MOF-5 Hybrid Heavy metal Ni(II)
This research has been supported by the R&T/NIOC under contract number 71/92019, Graduate office of Isfahan University of Technology and Iran Nanotechnology Initiative Council. Our thanks and appreciation also go to the people who are directly or indirectly helped us out in developing this work.
- 1.N.A. Khan, Z. Hasan, S.H. Jhung, Adsorptive removal of hazardous materials using metal-organic frameworks review article. J. Hazard Mater. 244–245, 444–456 (2012)Google Scholar
- 8.B.J. Zhu, X.Y. Yu, Y. Jia, F.M. Peng, B. Sun, M.Y. Zhang, T. Luo, J.H. Liu, X.J. Huang, Iron 1,3,5-benzenetricarboxylic metal organic coordination polymers prepared by solvothermal method and their application in efficient As(V) removal from aqueous solutions. J. Phys. Chem. US 116, 8601–8607 (2012)Google Scholar
- 36.S. Varma, D. Sarode, S. Wakale, B.A. Bhanvase, M.P. Deosarkar, Removal of nickel from waste water using graphene nanocomposite. Int. J. Chem. Phys. Sci. 2, 132–139 (2013)Google Scholar
- 44.N.N. Sheno, A. Morsali, Synthesis of different copper oxide nano-structures from direct thermal decomposition of porous Copper(II) metal-organic framework precursors. Int. J. Nanosci. Nanotechnol. 8, 2 (2012)Google Scholar
- 46.J. Hafizovic, M. Bjørgen, U. Olsbye, P.D.C Dietzel, S. Bordiga, C. Prestipino, C. Lamberti, K.P. Lillerud, The inconsistency in adsorption properties and powder XRD data of MOF-5 is rationalized by framework interpenetration and the presence of organic and inorganic species in the nanocavities. J. Am. Chem. Soc. 129(12), 3612–3620 (2007)CrossRefGoogle Scholar
- 47.C.G. Carson, K. Hardcastle, J. Schwartz, X. Liu, C. Hoffmann, R.A. Gerhardt, R. Tannenbaum, Synthesis and structure characterization of copper terephthalate, metal–organic frameworks. Eur. J. Inorg. Chem. 2338–2343 (2009)Google Scholar