Title :
Magnetic hollow mesoporous silica nanospheres with large pore sizes: Vacuum impregnation technique, superparamagnetic property and ultrafast immobolization of enzymes
Author :
Yu Chen ; Chen, Hangrong ; Guo, Limin ; Shi, Jianlin
Author_Institution :
State Key Lab. of High Performance Ceramics & Superfine Microstructure, Chinese Acad. of Sci., Shanghai, China
Abstract :
Hollow mesoporous silica nanospheres with large pores have been synthesized by a newly developed green approach, and the highly dispersed hydrophobic magnetite nanoparticles were then loaded into hollow nanospheres through the large pores with a vacuum impregnation technique. The obtained Fe3O4-hollow mesoporous silica composites exhibit superparamagnetic property and ultra-fast immobilization speed of hemoglobin, which were characterized by XRD, FTIR, TEM, HRTEM, SAED, SEM, UV-vis and VSM.
Keywords :
Fourier transform spectra; X-ray diffraction; biochemistry; biomagnetism; blood; composite materials; electron diffraction; enzymes; infrared spectra; iron compounds; mesoporous materials; molecular biophysics; nanobiotechnology; nanomagnetics; nanoparticles; scanning electron microscopy; silicon compounds; superparamagnetism; transmission electron microscopy; ultraviolet spectra; visible spectra; FTIR; Fe3O4-SiO2; HRTEM; SAED; SEM; TEM; UV-vis spectroscopy; VSM; XRD; composites; enzymes; hemoglobin; highly dispersed hydrophobic magnetite nanoparticles; magnetic hollow mesoporous silica nanospheres; pore sizes; superparamagnetic property; ultrafast immobolization; vacuum impregnation technique; Biochemistry; Magnetic materials; Magnetic properties; Magnetic separation; Mesoporous materials; Morphology; Nanoparticles; Saturation magnetization; Silicon compounds; Vacuum technology;
Conference_Titel :
Nanoelectronics Conference (INEC), 2010 3rd International
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-3543-2
Electronic_ISBN :
978-1-4244-3544-9
DOI :
10.1109/INEC.2010.5425102
