Magnetic solid-phase extraction of norfloxacin by core-shell magnetic nanoparticles

被引：2
|
作者：
Li, Shuang [1 ]
Liu, Xingyan [1 ]
Xu, Jiao [1 ]
Wei, Dongwei [1 ]
Li, Cun [1 ]
Zhao, Ruili [1 ]
Yang, Linyan [1 ]
机构：
[1] Tianjin Agr Univ, Coll Anim Sci & Vet Med, Tianjin Key Lab Agr Anim Breeding & Healthy Husb, Tianjin 300392, Peoples R China
来源：
JOURNAL OF COORDINATION CHEMISTRY | 2022年 / 75卷 / 7-8期
基金：
中国国家自然科学基金;
关键词：
gamma-Fe2O3; surface modification; Nor; MSPE; ORGANIC FRAMEWORK; POROUS CARBON; ADSORPTION; EFFICIENT; CATALYST;
D O I：
10.1080/00958972.2022.2095622
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Two magnetic metal-organic frameworks were synthesized with a core-shell structure. Maghemite (gamma-Fe2O3) as the magnetic core was used to prepare gamma-Fe2O3@SiO2, gamma-Fe2O3@SiO2-NH2 and gamma-Fe2O3@SiO2-NH2-COOH nanoparticles (MNPs) via tetraethyl orthosilicate (TEOS), (3-aminopropyl)trimethoxysilane (APTMS) and glutaric anhydride (GA). gamma-Fe2O3@SiO2-NH2-COOH nanoparticles were further modified by Core-Shell package of Tb-BDC-NH2 and Tb-BDC, in which the ligands were 2-aminoterephthalic acid (H2BDC-NH2) and terephthalic acid (H2BDC). IR spectra were used for structure determination of gamma-Fe2O3, gamma-Fe2O3@SiO2, gamma-Fe2O3@SiO2-NH2-COOH and gamma-Fe2O3@SiO2-NH2-COOH/Tb-BDC nanoparticles. Magnetic solid-phase extraction (MSPE) of norfloxacin (Nor) experiments exhibited that, for gamma-Fe2O3@SiO2-NH2-COOH/Tb-BDC-NH2 nanoparticles, the best adsorption was obtained at pH = 6. For gamma-Fe2O3@SiO2-NH2-COOH/Tb-BDC nanoparticles, the best adsorption was obtained at pH = 4. gamma-Fe2O3@SiO2-NH2-COOH/Tb-BDC nanoparticles exhibit characteristic Tb-III emission spectra at 490 (D-5(4)-> F-7(6)), 545 (D-5(4)-> F-7(5)), 585 (D-5(4)-> F-7(4)) and 621 nm (D-5(4)-> F-7(3)) after MSPE of norfloxacin. X-ray photoelectron spectroscopy (XPS) spectra are used for determination of gamma-Fe2O3@SiO2-NH2-COOH, gamma-Fe2O3@SiO2-NH2-COOH/Tb-BDC and gamma-Fe2O3@SiO2-NH2-COOH/Tb-BDC + Nor nanoparticles. XPS results showed that coordination occurs between gamma-Fe2O3@SiO2-NH2-COOH/Tb-BDC nanoparticles and Nor. [GRAPHICS] .
引用
收藏
页码：925 / 936
页数：12
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