Nickel ferrite bearing nitrogen-doped mesoporous carbon as efficient adsorbent for the removal of highly toxic metal ion from aqueous medium
[Display omitted] •Nickel ferrite bearing nitrogen-doped mesoporous carbon (NiFe2O4-NC) was synthesized.•Adsorption of Hg2+ onto NiFe2O4-NC was fast, spontaneous and exothermic.•Monolayer adsorption capacity and SBET were 476.2mgg−1 and 147.4m2g−1, respectively.•The NiFe2O4-NC was regenerated by sim...
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Published in | Chemical engineering journal (Lausanne, Switzerland : 1996) Vol. 330; pp. 1351 - 1360 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
15.12.2017
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Subjects | |
Online Access | Get full text |
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Summary: | [Display omitted]
•Nickel ferrite bearing nitrogen-doped mesoporous carbon (NiFe2O4-NC) was synthesized.•Adsorption of Hg2+ onto NiFe2O4-NC was fast, spontaneous and exothermic.•Monolayer adsorption capacity and SBET were 476.2mgg−1 and 147.4m2g−1, respectively.•The NiFe2O4-NC was regenerated by simply washing with 0.01M HCl solution.
Nickel ferrite bearing nitrogen-doped mesoporous carbon (NiFe2O4-NC) was prepared using polymer bimetal complexes and used for the removal of Hg2+ from aqueous medium. The nanocomposite was characterized using several analytical techniques such as SEM, TEM, FTIR, Raman, TGA/DTA, XRD, VSM, XPS and BET. The adsorption behavior of NiFe2O4-NC nanocomposites was investigated via adsorption kinetics, isotherms and thermodynamic. The adsorption isotherm could be well described with Langmuir model, with the maximum adsorption capacity of 476.2mgg−1 at 25°C. The desorption results showed the best recovery of Hg2+ metal ion using 0.01MHCl. The remarkable adsorption properties are mainly attributed to the synergetic chemical coupling effects between NiFe2O4 nanoparticles and nitrogen doped graphitized carbon. The presented cost-effective strategy is developed to prepared NiFe2O4 nanocrystals embedded in nitrogen-doped graphitized carbon matrix using a single source precursor offers prospects in developing highly effective magnetic adsorbent for removal of toxic pollutant form contaminated water. |
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ISSN: | 1385-8947 1873-3212 |
DOI: | 10.1016/j.cej.2017.08.079 |