Enhancement of Rb+ and Cs+ removal in 3D carbon aerogel-supported Na2Ti3O7

doi:10.1016/j.molliq.2018.04.117

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	Enhancement of Rb+ and Cs+ removal in 3D carbon aerogel-supported Na2Ti3O7
	Liu, Ge; Mei, Huiyang; Tan, Xiaoli; Zhang, Huifang; Liu, Haining; Fang, Ming; Wang, Xiangke
	2018-07-15
发表期刊	JOURNAL OF MOLECULAR LIQUIDS
ISSN	0167-7322
卷号	262 页码:476-483
摘要	In this paper, three-dimensional carbon aerogel (CA) combined sodium titanate (CA/Na2Ti3O7) was synthesized via a facile hydrothermal method, which was applied to remove Rb+ and Cs+ from aqueous solution. It is found the CA/Na2Ti3O7 composites have larger adsorption capacity and faster adsorption equilibrium time than that of pure Na2Ti3O7, which is ascribed to the enhanced effect of CA on Na2Ti3O7. The adsorption isotherms can be fitted by the Langmuir model well. The adsorption mechanism at pH < 8.0 is attributed to the ion exchange process, while inner-sphere surface complexation is predominant at pH > 8.0. The adsorption kinetics follows the pseudo-second-order model and the major mechanism is identified by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy analyses. The adsorption of Rb+ and Cs+ on CA/Na2Ti3O7 can be explained by the ion exchange between Rb+/Cs+ and Na+ in the interlayer of Na2Ti3O7 and the complexation of Rb+/Cs+ with the -OH functional groups of CA/Na2Ti3O7. These results show potential application of CA/Na2Ti3O7 in the elimination of radionuclides from wastewater. (C) 2018 Published by Elsevier B.V.
DOI	10.1016/j.molliq.2018.04.117
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/34475
专题	盐湖资源与化学实验室
推荐引用方式 GB/T 7714	Liu, Ge,Mei, Huiyang,Tan, Xiaoli,et al. Enhancement of Rb+ and Cs+ removal in 3D carbon aerogel-supported Na2Ti3O7[J]. JOURNAL OF MOLECULAR LIQUIDS,2018,262:476-483.
APA	Liu, Ge.,Mei, Huiyang.,Tan, Xiaoli.,Zhang, Huifang.,Liu, Haining.,...&Wang, Xiangke.(2018).Enhancement of Rb+ and Cs+ removal in 3D carbon aerogel-supported Na2Ti3O7.JOURNAL OF MOLECULAR LIQUIDS,262,476-483.
MLA	Liu, Ge,et al."Enhancement of Rb+ and Cs+ removal in 3D carbon aerogel-supported Na2Ti3O7".JOURNAL OF MOLECULAR LIQUIDS 262(2018):476-483.

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