Electrospraying of ferritin solutions for the production of monodisperse iron oxide nanoparticles

被引:8
作者
Gonzalez, David
Nasibulin, Albert G.
Jiang, Hua
Queipo, Paula
Kauppinen, Esko I.
机构
[1] Aalto Univ, Nanomat Grp, Phys Lab, FIN-02044 Espoo, Finland
[2] Aalto Univ, Ctr New Mat, FIN-02044 Espoo, Finland
[3] VTT Nanobiomat, Espoo, Finland
基金
芬兰科学院;
关键词
electrospray; ferritin; iron oxide nanoparticles;
D O I
10.1080/00986440701215531
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Iron oxide nanoparticles with uniform size and narrow size distribution were synthesized by electrospraying of ferritin and subsequent heat treatment at 800 degrees, 850 degrees, and 900 degrees C. Solutions of ferritin in both water and water/iso-propanol mixture ( 50: 50) were electrosprayed in diverse gaseous environments. Narrow mobility size distributions with a mean mobility diameter of 4.5 nm and a geometric standard deviation < 1.2 were obtained at 800 degrees C. The process of aerosol formation involved the thermal oxidation of the ferritin organic shell. The utilization of a water/iso-propanol ( 50: 50) ferritin solution led to the establishment of a more stable electrospray, and, consequently, an increase in the total particle concentration was observed. Furthermore, carbon-coated magnetite (Fe3O4) particles were generated when CO was used as carrier gas.
引用
收藏
页码:901 / 912
页数:12
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