Preparation and characterization of silica-coated Fe3O4 nanoparticles used as precursor of ferrofluids
文献类型：期刊论文
| 作者 | Hong, R. Y.; Li, J. H.; Zhang, S. Z.; Li, H. Z.; Zheng, Y.; Ding, J. M.; Wei, D. G. |
| 刊名 | Applied Surface Science
 |
| 出版日期 | 2009 |
| 期号 | 6页码:3485-3492 |
| 关键词 | Magnetic nanoparticles Fe3O4/SiO2 Surface modification Ferrofluids Rheology CHEMICAL-VAPOR-DEPOSITION MAGNETITE NANOPARTICLES RHEOLOGICAL PROPERTIES SURFACE-MODIFICATION SOL-GEL FLUIDS REACTOR NANOCOMPOSITES HYPERTHERMIA NANOCRYSTAL |
| 其他题名 | Appl. Surf. Sci. |
| 中文摘要 | Fe3O4 magnetic nanoparticles (MNPs) were synthesized by the co-precipitation of Fe3+ and Fe2+ with ammonium hydroxide. The sodium citrate-modified Fe3O4 MNPs were prepared under Ar protection and were characterized by Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), X-ray powder diffraction (XRD) and vibrating sample magnetometer (VSM). To improve the oxidation resistance of Fe3O4 MNPs, a silica layer was coated onto the modified and unmodified MNPs by the hydrolysis of tetraethoxysilane (TEOS) at 50 degrees C and pH 9. Afterwards, the silica-coated Fe3O4 core/shell MNPs were modified by oleic acid (OA) and were tested by IR and VSM. IR results revealed that the OA was successfully grafted onto the silica shell. The Fe3O4/SiO2 core/shell MNPs modified by OA were used to prepare water-based ferrofluids (FFs) using PEG as the second layer of surfactants. The properties of FFs were characterized using a UV-vis spectrophotometer, a Gouy magnetic balance, a laser particle size analyzer and a Brookfield LVDV-III+ rheometer. (C) 2008 Elsevier B. V. All rights reserved. |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000261972100003 |
| 公开日期 | 2014-09-30 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/11404]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 推荐引用方式 GB/T 7714 | Hong, R. Y.,Li, J. H.,Zhang, S. Z.,et al. Preparation and characterization of silica-coated Fe3O4 nanoparticles used as precursor of ferrofluids[J]. Applied Surface Science,2009(6):3485-3492. |
| APA | Hong, R. Y..,Li, J. H..,Zhang, S. Z..,Li, H. Z..,Zheng, Y..,...&Wei, D. G..(2009).Preparation and characterization of silica-coated Fe3O4 nanoparticles used as precursor of ferrofluids.Applied Surface Science(6),3485-3492. |
| MLA | Hong, R. Y.,et al."Preparation and characterization of silica-coated Fe3O4 nanoparticles used as precursor of ferrofluids".Applied Surface Science .6(2009):3485-3492. |
入库方式： OAI收割
来源：过程工程研究所
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