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| 纳米Fe3O4包覆结构及其磁流体稳定性 | |
| 引用本文： | 崔升,林本兰,沈晓冬.纳米Fe3O4包覆结构及其磁流体稳定性[J].中南大学学报(自然科学版),2011,42(6). |
| 作者姓名： | 崔升 林本兰 沈晓冬 |
| 作者单位： | 1. 南京工业大学材料科学与工程学院,江苏南京,210009;佐治亚理工学院土木与环境学院,美国亚特兰大,30332 2. 南京工业大学材料科学与工程学院,江苏南京,210009;南京工业大学学报编辑部,江苏南京,210009 3. 南京工业大学材料科学与工程学院,江苏南京,210009 |
| 基金项目： | 江苏省自然科学基金重点资助项 |
| 摘 要： | 采用化学共沉淀法制备纳米Fe3O4粉体，通过机械球磨的方法研究阴离子表面活性剂十二烷基苯磺酸纳(SDBS)的用量对纳米Fe3O4的包覆结构及其磁流体分散效果的影响。对制得的样品经过XRD，HRTEM，FT-IR和XPS等进行表征。在50 mL水溶液中,当纳米Fe3O4质量为10 g，pH为4.5和球磨时间为5 h时，SDBS最佳用量为0.8 g；SDBS以化学和物理吸附在尖晶石结构的Fe3O4纳米颗粒表面，形成了Fe-O-S化学键使得纳米颗粒表面的包覆结构很难被打破，制得的磁流体具有较强的稳定性。 |
| 关 键 词： | Fe3O4磁流体 十二烷基苯磺酸钠 包覆结构 分散稳定性 |
Covering structure and stability of nanosized Fe3O4 magnetic liquid |
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| CUI Sheng,LIN Ben-lan,SHEN Xiao-dong.Covering structure and stability of nanosized Fe3O4 magnetic liquid[J].Journal of Central South University:Science and Technology,2011,42(6). | |
| Authors: | CUI Sheng LIN Ben-lan SHEN Xiao-dong |
| Affiliation: | CUI Sheng1,2,LIN Ben-lan1,3,SHEN Xiao-dong1 (1.College of Materials Science and Technology,Nanjing University of Technology,Nanjing 210009,China,2.School of Civil and Environmental Engineering,Georgia Institute of Technology,Atlanta 30332,United States,3.Journal Editorial Board,China) |
| Abstract: | Fe3O4 nanoparticles were prepared with Chemical co-precipitation method.The covering structure and stability of nanosized Fe3O4 magnetic liquid effected by the dosage of sodium dodecyl benzene sulfonate(SDBS) were investigated with ball milling method.The samples were measured by X-ray diffraction(XRD),high-resolution retransmission electron microscopy(HRTEM),Fourier transform infrared spectrometry(FT-IR) and X-ray photoelectron spectroscopy(XPS).The results show that when the mass of Fe3O4 is 10 g in 50 mL... |
| Keywords: | Fe3O4 magnetic liquid sodium dodecyl benzene sulfonate(SDBS) covering structure dispersion stability |
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