通过溶液燃烧法制备的NiZnFe₂O₄/SiO₂纳米复合材料对牛血清白蛋白的吸附动力学

Adsorption Kinetics of Bovine Serum Albumin onto NiZnFe₂O₄/SiO₂ Nanocomposites Prepared via the Solution Combustion Process.

作者信息

He Aolin, Lu Rongzhu, Lu Yimin, Wu Xiaoyang, Chen Jian, Xiang Jun, Guo Qiyuan

机构信息

Affiliated Kunshan Hospital, Jiangsu University, Kunshan 215300, P. R. China.

School of Mathematics and Physics, Jiangsu University of Science and Technology, Zhenjiang, 212003, P. R. China.

出版信息

J Nanosci Nanotechnol. 2018 Apr 1;18(4):2875-2880. doi: 10.1166/jnn.2018.14360.

DOI:10.1166/jnn.2018.14360

PMID:29442968

Abstract

Magnetic Ni0.5Zn0.5Fe2O4/SiO2 nanocomposites were prepared via the solution combustion process, their structure and magnetic properties were investigated by XRD, SEM, TEM and VSM. The asprepared magnetic Ni0.5Zn0.5Fe2O4/SiO2 nanocomposites were characterized with the average grain size of about 20 nm, the specific magnetization of 31.6 Am2/kg, and the specific surface area of 117.0 m2/g. The adsorption kinetics of bovine serum albumin (BSA) from aqueous solution onto the magnetic Ni0.5Zn0.5Fe2O4/SiO2 nanocomposites at room temperature was investigated. The kinetics data related to the adsorption of BSA from aqueous solutions were in good agreement with the pseudo-second-order kinetics model in the initial concentrations of 0.2-0.8 mg/mL.

摘要

通过溶液燃烧法制备了磁性Ni0.5Zn0.5Fe2O4/SiO2纳米复合材料，采用X射线衍射仪（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）和振动样品磁强计（VSM）对其结构和磁性进行了研究。所制备的磁性Ni0.5Zn0.5Fe2O4/SiO2纳米复合材料的平均粒径约为20nm，比磁化强度为31.6 Am2/kg，比表面积为117.0 m2/g。研究了室温下牛血清白蛋白（BSA）从水溶液吸附到磁性Ni0.5Zn0.5Fe2O4/SiO2纳米复合材料上的吸附动力学。在0.2 - 0.8 mg/mL的初始浓度下，与BSA从水溶液中吸附相关的动力学数据与准二级动力学模型吻合良好。