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Synthesis of reduced graphene oxide/NiO nanocomposites for the removal of Cr(VI) from aqueous water by adsorption
K. X. Zhang, H. Y. Li, X. J. Xu and H. W. Yu
2018
Source PublicationMicroporous and Mesoporous Materials
Volume255Pages:7-14
Other AbstractIn this work, we report a room-temperature approach to synthesizing reduced graphene oxidei/NiO (RGO/NiO) nanocomposites. The chemical structure of RGO/NiO nanocomposites were investigated by Transmission Electron Microscope (TEM), X-ray photoelectron spectroscopy (XPS), and X-ray power diffraction (XRD). It is shown by the experiment that the RGO/NiO nanocomposites have strong capacity to absorb the hexavalent chromium ion (Cr (VI)), the maximum adsorption capacity of Cr (VI) on RGO/NiO nanocomposites at pH = 4 and T = 25 degrees C can reach 198 mg g(-1), higher than any other currently reported. The adsorption kinetic data were well described by a pseudo-second-order model. Both Freundlich and Langmuir isotherm models were applied to the experimental data analysis, and the latter proved to be a better fit. The pH value markedly affected the adsorption behavior of RGO/NiO nano composites, but the effect of temperature was insignificant. The probable mechanism of synergistic adsorption of Cr (VI) ions was considered. These results suggest that RGO/NiO nanocomposites have the potential to be applied in industrial wastewater treatment. (C) 2017 Elsevier Inc. All rights reserved.
Document Type期刊论文
Identifierhttp://ir.iga.ac.cn/handle/131322/9274
Collection湿地生态系统管理学科组
Recommended Citation
GB/T 7714
K. X. Zhang, H. Y. Li, X. J. Xu and H. W. Yu. Synthesis of reduced graphene oxide/NiO nanocomposites for the removal of Cr(VI) from aqueous water by adsorption[J]. Microporous and Mesoporous Materials,2018,255:7-14.
APA K. X. Zhang, H. Y. Li, X. J. Xu and H. W. Yu.(2018).Synthesis of reduced graphene oxide/NiO nanocomposites for the removal of Cr(VI) from aqueous water by adsorption.Microporous and Mesoporous Materials,255,7-14.
MLA K. X. Zhang, H. Y. Li, X. J. Xu and H. W. Yu."Synthesis of reduced graphene oxide/NiO nanocomposites for the removal of Cr(VI) from aqueous water by adsorption".Microporous and Mesoporous Materials 255(2018):7-14.
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