Ammonium molybdophosphate metal-organic framework composite as an effective adsorbent for capture of Rb+ and Cs+ from aqueous solution

doi:10.1016/j.jssc.2021.122767

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	Ammonium molybdophosphate metal-organic framework composite as an effective adsorbent for capture of Rb+ and Cs+ from aqueous solution
	Wang, Yanping; Li, Kexin; Fang, Dezhen; Ye, Xiushen; Liu, Haining; Tan, Xiaoli; Li, Quan; Li, Jun; Wu, Zhijian
	2021-11
Source Publication	JOURNAL OF SOLID STATE CHEMISTRY
ISSN	0022-4596
Volume	306
Abstract	A new composite adsorbent (AMP@MOF-76(Sm)) grafted ammonium molybdophosphate onto MOF-76(Sm) was synthesized via a solvothermal method and well-characterized by SEM-EDS, particle size analysis, N-2 adsorption-desorption isotherms, TG, FT-IR, XRD and XPS analysis. The adsorption behaviors of Rb+ and Cs+ on synthesized AMP@MOF-76(Sm) were investigated depending on the parameters of solution pH, ionic strength, contact time, ion concentration and temperature. The adsorbent can adsorb Rb+ and Cs+ from the solution when the solution pH ranged from 4.0 to 10.0 and the coexisted ion (Na+) has little effect on the adsorption amounts of both Rb+ and Cs+. The adsorption kinetic data fitted well with pseudo-second order kinetic models. The adsorption equilibrium of Rb+ and Cs+ on AMP@MOF-76(Sm) is better explained by the Langmuir isotherm model and the maximum adsorption amounts for Rb+ and Cs+ are 0.490 mmol g(-1) and 0.434 mmol g(-1), respectively. Furthermore, the AMP@MOF-76(Sm) could be easily reused at least four times using 3.0 mmol L-1 ammonia nitrate as the eluent. The mechanism of the adsorption of Rb+ and Cs+ is proposed to be a combination of electrostatic attraction and ion exchange mechanism.
DOI	10.1016/j.jssc.2021.122767
Citation statistics
Document Type	期刊论文
Identifier	http://ir.isl.ac.cn/handle/363002/34584
Collection	盐湖资源与化学实验室
Recommended Citation GB/T 7714	Wang, Yanping,Li, Kexin,Fang, Dezhen,et al. Ammonium molybdophosphate metal-organic framework composite as an effective adsorbent for capture of Rb+ and Cs+ from aqueous solution[J]. JOURNAL OF SOLID STATE CHEMISTRY,2021,306.
APA	Wang, Yanping.,Li, Kexin.,Fang, Dezhen.,Ye, Xiushen.,Liu, Haining.,...&Wu, Zhijian.(2021).Ammonium molybdophosphate metal-organic framework composite as an effective adsorbent for capture of Rb+ and Cs+ from aqueous solution.JOURNAL OF SOLID STATE CHEMISTRY,306.
MLA	Wang, Yanping,et al."Ammonium molybdophosphate metal-organic framework composite as an effective adsorbent for capture of Rb+ and Cs+ from aqueous solution".JOURNAL OF SOLID STATE CHEMISTRY 306(2021).

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