一种新型的用于萃取铷的冠醚功能化磁性固相纳米材料

doi:10.11896/cldb.22070038

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Abstract In this study, a novel crown-ether-functionalized nano magnetic solid-phase extractant (CFE) for extracting Rb⁺ was successfully prepared by the following three steps. First, the magnetic core of Fe₃O₄ nanoparticles was synthesized by a solvothermal method. Second, the SiO₂-NH₂ group was coated on the surface of the magnetic core to prepare an intermediate product of Fe₃O₄@SiO₂-NH₂ by ester hydrolytic reaction of (3-aminopropyl)triethoxysilane in an alkaline environment. Third, the targeted functional group of crown ether was then modified on the surface of the intermediate product to prepare a novel CFE extractant by an amidation reaction between the carboxyl group in 4′-carboxybenzo-18-crown 6-ether and the amino group on Fe₃O₄@SiO₂-NH₂ under the catalysis of N-(3-Dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride. Then, the characteristics of micro morphology, magnetization, X-ray diffraction, infrared absorption, and elemental composition of the Fe₃O₄, Fe₃O₄@SiO₂-NH₂ and CFE were analyzed, which had lent support to the successful preparation of these materials. The extraction ability for Rb⁺ of this novel CFE material was verified. Moreover, the effect of solution pH on Rb⁺ extraction rate was explored, and the results showed that CFE had a best extraction rate of 90.0% for Rb⁺ at the pH 13 (at room temperature, extracting for 30 minutes).

Key words： rubidium magnetic solid phase extraction crown ether functional material nanomaterial

Published: 10 September 2024 Online: 2024-09-30

CLC number:

O647.3

Fund:Applied Basic Research Foundation of QingHai Province Science and Technology Department (2020-ZJ-702).

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	FU Hua
	CHEN Huiyuan
	SONG Weijun
	ZHAO Yun

Cite this article:

FU Hua,CHEN Huiyuan,SONG Weijun, et al. A Novel Crown-ether-functionalized Magnetic Solid-phase Nanomaterial for Extracting Rubidium[J]. Materials Reports, 2024, 38(17): 22070038-6.

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http://www.mater-rep.com/EN/10.11896/cldb.22070038 OR http://www.mater-rep.com/EN/Y2024/V38/I17/22070038

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