Knowledge Management System Of Institute of process engineering,CAS
| Preparation and characterization of amino-silane modified superparamagnetic silica nanospheres | |
| Alternative Title | J. Magn. Magn. Mater. |
| Liu, XQ; Ma, ZY; Xing, JM; Liu, HZ | |
| 2004-03-01 | |
| Source Publication | JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
 |
| ISSN | 0304-8853 |
| Volume | 270Issue:1-2Pages:1-6 |
| Abstract | Magnetite nanoparticles were prepared by coprecipitation of Fe2+ and Fe3+ with NH4OH, and then, silica was coated on the surface of the magnetite nanoparticles to form well-dispersed magnetic silica nanospheres. The size of spheres was controlled by changing the ratio of SiO2 to Fe3O4. Amino-silane was covalently coupled to the surface of the magnetic silica nanospheres and activated by glutaraldehyde. The morphology and magnetic properties of magnetic silica nanospheres were examined by TEM and VSM. The nanospheres have an average size of 100-200 nm diameter and possess superparamagnetic characteristics. Powder X-ray diffraction measurements show the spinel structure for the magnetite particles coated by silica. By protein immobilization assay, it was proved that the amino-silane treated magnetic silica nanospheres could significantly improve the capacity of protein immobilization. (C) 2003 Published by Elsevier B.V.; Magnetite nanoparticles were prepared by coprecipitation of Fe2+ and Fe3+ with NH4OH, and then, silica was coated on the surface of the magnetite nanoparticles to form well-dispersed magnetic silica nanospheres. The size of spheres was controlled by changing the ratio of SiO2 to Fe3O4. Amino-silane was covalently coupled to the surface of the magnetic silica nanospheres and activated by glutaraldehyde. The morphology and magnetic properties of magnetic silica nanospheres were examined by TEM and VSM. The nanospheres have an average size of 100-200 nm diameter and possess superparamagnetic characteristics. Powder X-ray diffraction measurements show the spinel structure for the magnetite particles coated by silica. By protein immobilization assay, it was proved that the amino-silane treated magnetic silica nanospheres could significantly improve the capacity of protein immobilization. (C) 2003 Published by Elsevier B.V. |
| Keyword | Preparation Amino-silane Magnetic Silica Nanosphere Protein Immobilization |
| Subtype | Article |
| WOS Headings | Science & Technology ; Technology ; Physical Sciences |
| DOI | 10.1016/j.jmmm.2003.07.006 |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | ENZYME IMMOBILIZATION ; MAGNETIC PARTICLES ; PURIFICATION ; MICROSPHERES ; PROTEINS |
| WOS Research Area | Materials Science ; Physics |
| WOS Subject | Materials Science, Multidisciplinary ; Physics, Condensed Matter |
| WOS ID | WOS:000188887400001 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Version | 出版稿 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/4990 |
| Collection | 研究所（批量导入） |
| Affiliation | Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Lab Separat Sci & Engn, Beijing 100080, Peoples R China |
| Recommended Citation GB/T 7714 | Liu, XQ,Ma, ZY,Xing, JM,et al. Preparation and characterization of amino-silane modified superparamagnetic silica nanospheres[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,2004,270(1-2):1-6. |
| APA | Liu, XQ,Ma, ZY,Xing, JM,&Liu, HZ.(2004).Preparation and characterization of amino-silane modified superparamagnetic silica nanospheres.JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,270(1-2),1-6. |
| MLA | Liu, XQ,et al."Preparation and characterization of amino-silane modified superparamagnetic silica nanospheres".JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 270.1-2(2004):1-6. |
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| Preparation and char（300KB） | 限制开放 | CC BY-NC-SA | Application Full Text | |||
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