Synthesis of reduced graphene oxide/NiO nanocomposites for the removal of Cr(VI) from aqueous water by adsorption

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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
刊名	Microporous and Mesoporous Materials
	2018
卷号	255 页码:7-14
通讯作者	于洪文
中文摘要	In 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.
内容类型	期刊论文
源URL	[http://ir.iga.ac.cn/handle/131322/8919]
专题	东北地理与农业生态研究所_湿地生态系统管理学科组_期刊论文
推荐引用方式 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.