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eISSN: 2083-5906
ISSN: 1230-1485
ISSN: 1230-1485
ORIGINAL RESEARCH
Adsorption of Co(II) on Graphene Oxides
from Aqueous Solution
Hua Zhu1, Xuetao Xu2, Xin Zhong1
1School of Chemistry and Chemical Engineering, Sichuan University of Arts and Sciences,
Dazhou 635000, P.R. China
2School of Chemical and Environmental Engineering, Wuyi Unicersity,
Jiangmen 529020, P.R. China
Dazhou 635000, P.R. China
2School of Chemical and Environmental Engineering, Wuyi Unicersity,
Jiangmen 529020, P.R. China
Submission date: 2016-04-20
Final revision date: 2016-06-15
Acceptance date: 2016-06-15
Publication date: 2016-11-24
Pol. J. Environ. Stud. 2016;25(6):2675-2682
KEYWORDS
TOPICS
ABSTRACT
Graphene oxide (GO) was synthesized and characterized by scanning electron microscopy (SEM),
transmission electron microscopy (TEM), x-ray diffraction (XRD), and Fourier transformed infrared spectra
(FT-IR). The adsorption of Co(II) on GO was studied as a function of contact time, pH, ionic strength, humic
acid, Co(II) concentration, and temperature. The adsorption of Co(II) is strongly dependent on the pH values
and weakly dependent on ionic strength. The adsorption thermodynamics of Co(II) on GO was carried out at
303, 313, and 333 K to obtain the corresponding thermodynamic data (ΔH0, ΔS0, and ΔG0), which suggested
that the adsorption of Co(II) on GO is a spontaneous and endothermic process. GO provided a promising
candidate for the preconcentration and solidification of Co(II) from large volumes of aqueous solutions.
CONFLICT OF INTEREST
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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| eISSN: | 2083-5906 |
| ISSN: | 1230-1485 |
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