Hydrothermal synthesis and characterization of single-crystalline Fe3O4 nanowires with high aspect ratio and uniformity |
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| Affiliation: | 1. Department of Chemistry, Ångström Laboratory, Uppsala University, Uppsala 75121, Sweden;2. Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China;3. Department of Engineering Sciences, Ångström Laboratory, Uppsala University, Uppsala, 75121, Sweden;1. Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China;2. Institute of Advanced Marine Materials, Harbin Engineering University, 150001, PR China;1. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;2. National Center for Electron Microscopy in Beijing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;1. Department of Bio-Nano-Science and Engineering, Key Laboratory for Thin Film and Microfabrication of Ministry of Education, Institute of Micro-Nano Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, China;2. Department of Surgery, Changzhen Hospital, Second Military Medical University, 155 Fengyang Road, Shanghai 20001, China |
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| Abstract: | Uniform, ultra-thin, single-crystalline Fe3O4 nanowires with narrow diameter distribution centered at 15 nm and length up to several microns, were synthesized by a simple hydrothermal route with the assistance of polyethylene glycol (PEG) 400. The morphologies and structure of the obtained nanowires were examined by means of X-ray diffraction (XRD), Mössbauer spectrum, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM). The effect of PEG content and molecular weight on the yield and morphology of Fe3O4 nanowires was investigated. Saturation magnetization of Fe3O4 nanowires was determined to be 23.0 emu/g, which is distinctly lower than that of Fe3O4 nanoparticles. |
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