Synthesis and characterization of functionalized magnetic silica nanospheres for the acremonium cellulase immobilization

doi:10.1166/jnn.2016.11334

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Synthesis and characterization of functionalized magnetic silica nanospheres for the acremonium cellulase immobilization
	Zhang, Wenjuan 2; Qiu, Jianhui 1,2; Feng, Huixia 1; Wu, Xueli 2; Zang, Limin 2; Sakai, Eiichi 2
刊名	Journal of Nanoscience and Nanotechnology
	2016-07-01
卷号	16 期号:7 页码:7195-7202
关键词	Convergence of numerical methods Differential thermal analysis Ethanol Fourier transform infrared spectroscopy High resolution transmission electron microscopy Magnetite Magnetite nanoparticles Molecular biology Nanomagnetics Nanospheres Radioactive waste vitrification Silica Thermogravimetric analysis Cellulase Core-shell morphologies Functionalized Magnetic silica nanospheres Structures and properties Synthesis and characterizations Tetra-ethyl-ortho-silicate Vibrating sample magnetometry
ISSN号	15334880
DOI	10.1166/jnn.2016.11334
英文摘要	Functionalized magnetic silica nanospheres were prepared in two steps: by silica coating magnetite nanoparticles and then making an amino-silane modification of the silica-coated magnetite particles. The effects of different amounts of tetraethylorthosilicate on the morphologies and magnetic properties of the silica-coated magnetite particles were investigated by transmission electron microscopy, thermogravimetric analysis, and vibrating sample magnetometry. The structures and properties of the functionalized magnetic silica nanospheres were characterized by Fourier transform infrared spectroscopy, differential thermal analysis, and X-ray diffraction. Then functionalized magnetic silica nanospheres prepared using different amounts of tetraethylorthosilicate were used as supports for immobilization of cellulase. It was found that the functionalized magnetic silica nanospheres prepared using 5 mL tetraethylorthosilicate formed clear core-shell morphologies with 37% silica content; the amount of immobilized cellulase on this support was 92 mg/g support and activity recovery was 80%, and glucose resulting from straw hydrolysis by immobilized cellulase was reached to 20.8 g/L. Immobilized cellulase exhibited better resistance to high temperature. Furthermore, the activity of the immobilized cellulase was still 63.2% of the initial activity after 10 continuous uses, which demonstrated its large-scale potential. Copyright © 2016 American Scientific Publishers All rights reserved.
资助项目	Environment Research and Technology Development Fund of the Ministry of the Environment, Japan[3K113018]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	American Scientific Publishers
WOS记录号	WOS:000387100400085
状态	已发表
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/112993]
专题	石油化工学院教务处（创新创业学院）
通讯作者	Qiu, Jianhui
作者单位	1.Lanzhou Univ Technol, Coll Petrochem Engn, Lanzhou 730050, Peoples R China 2.Akita Prefectural Univ, Fac Syst Engn, Dept Machine Intelligence & Syst Engn, Akita 0150055, Japan
推荐引用方式 GB/T 7714	Zhang, Wenjuan,Qiu, Jianhui,Feng, Huixia,et al. Synthesis and characterization of functionalized magnetic silica nanospheres for the acremonium cellulase immobilization[J]. Journal of Nanoscience and Nanotechnology,2016,16(7):7195-7202.
APA	Zhang, Wenjuan,Qiu, Jianhui,Feng, Huixia,Wu, Xueli,Zang, Limin,&Sakai, Eiichi.(2016).Synthesis and characterization of functionalized magnetic silica nanospheres for the acremonium cellulase immobilization.Journal of Nanoscience and Nanotechnology,16(7),7195-7202.
MLA	Zhang, Wenjuan,et al."Synthesis and characterization of functionalized magnetic silica nanospheres for the acremonium cellulase immobilization".Journal of Nanoscience and Nanotechnology 16.7(2016):7195-7202.