基于γ-Fe_2O_3磁性纳米微球的MSPE研究
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摘要
采用共价修饰方法得到海藻酸钠修饰的γ-Fe_2O_3@SiO_2-NH2-AA纳米粒子,用X-射线衍射法确定γ-Fe_2O_3的结构,用IR对纳米粒子γ-Fe_2O_3,γ-Fe_2O_3@SiO_2-NH2和γ-Fe_2O_3@SiO_2-NH2-AA进行结构确证.结果表明,氨基化和多糖化修饰成功.在静电相互作用下,利用γ-Fe_2O_3@SiO_2-NH2-AA纳米粒子对罗丹明B进行磁固相萃取,并对其进行优化.
γ-Fe_2O_3@SiO_2-NH2-AA nanoparticles could be prepared by covalent modification method via the modification of sodium alginate(AA). The structure of γ-Fe_2O_3 nanoparticles could be determined by XRD. IR spectra could be used for the determination of γ-Fe_2O_3, γ-Fe_2O_3@SiO_2-NH2 and γ-Fe_2O_3@SiO_2-NH2-AA nanoparticles.The results showed that the amination and polysaccharide modification were successful. Rhodamine B could be adsorbed by γ-Fe_2O_3@SiO_2-NH2-AA nanoparticles via MSPE under the electrostatic interaction, and the optimization of SMPE could be obtained.
γ-Fe_2O_3@SiO_2-NH2-AA nanoparticles could be prepared by covalent modification method via the modification of sodium alginate(AA). The structure of γ-Fe_2O_3 nanoparticles could be determined by XRD. IR spectra could be used for the determination of γ-Fe_2O_3, γ-Fe_2O_3@SiO_2-NH2 and γ-Fe_2O_3@SiO_2-NH2-AA nanoparticles.The results showed that the amination and polysaccharide modification were successful. Rhodamine B could be adsorbed by γ-Fe_2O_3@SiO_2-NH2-AA nanoparticles via MSPE under the electrostatic interaction, and the optimization of SMPE could be obtained.
引文
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12 Peyki A,Rahimpour A,Jahanshahi M.Preparation and characterization of thin film composite reverse osmosismembranes incorporated with hydrophilic Si O2nanoparticles[J].Desalination,2015,368:152-158.
2 Mohammed L,Gomaa H G,Ragab D,et al.Magnetic nanoparticles for environmental and biomedical applications:A review[J].Particuology,2017,30:1-4.
3 田明达,朱朝敏,罗聪,等.壳聚糖和油酸钠修饰的超顺磁性四氧化三铁纳米粒子的细胞毒性[J].第二军医大学学报,2014,35(4):366-371.
4 Ahmed S A,Soliman E M.Silica coated magnetic particles using microwave synthesis for removal of dyes from natural water samples:Synthesis,characterization,equilibrium,isotherm and kinetics studies[J].Applied Surface Science,2013,284:23-32.
5 Yan H,Zhang J C,You C X,et al.Surface modification of Fe3O4nanoparticles and their magnetic properties[J].Int J Miner Metall Mater,2009,16:226-229.
6 Zhang L,Shao H P,Zheng H,et al.Synthesis and characterization of Fe3O4@Si O2magnetic composite nanoparticles by a one-pot process[J].Int J Miner Metall Mater,2016,23:1 112-1 118.
7 Yang L Y,Zong Y M,Yang L S,et al.Modification,characterization and mimetic peroxidase propertities of calcined product of the cobalt compound[J].Journal of Coordination Chemistry,2017,70:2 161-2 173.
8 Yang L Y,Li L,Tu Q,et al.Photocatalyzed surface modification of poly(dimethylsiloxane)with polysaccharides and assay of their protein adsorption and cytocompatibility[J],Anal Chem,2010,82:6 430-6 439.
9 吴永娟,罗鸣,闫俊英,等.磁性介孔γ-Fe2O3制备及其处理含Cr(Ⅵ)废水的应用[J].工业水处理,2014,34(1):15-21.
10 陈和生,孙振亚,邵景昌,等.八种不同来源二氧化硅的红外光谱特征研究[J].硅酸盐通报,2011,30(4):934-937.
11 冯斌,任志强,屈晶苗,等.3-氨丙基三乙氧基硅烷表面修饰的磁性Fe3O4纳米粒子合成与表征[J].化工新型材料,2008,36(12):26-29.
12 Peyki A,Rahimpour A,Jahanshahi M.Preparation and characterization of thin film composite reverse osmosismembranes incorporated with hydrophilic Si O2nanoparticles[J].Desalination,2015,368:152-158.