实验中应用水相合成法制备Fe3O4/Au纳米复合微粒,通过对复合微粒生成过程的光谱检测,对生成物的磁响应性检测和采用HGMF磁分离,表明绝大多数颗粒既具有磁性,又具有纳米Au的特征.将获得的不同粒径的磁性颗粒分别与纯Fe3O4,Au纳米微粒进行选区电子衍射对比分析.结果表明,粒径越小的复合颗粒的衍射花样越接近纯Fe3O4,随粒径的增大,与纯Fe3O4的差异增大;当粒径增大到(15.8±2.8) nm,衍射花样与纯Au纳米颗粒的完全吻合,间接证实了Fe3O4/Au纳米复合微粒的核壳结构.
参考文献
| [1] | Yu Heng;Chen Min;Rice Philip M et al.[J].Nano Letters,2005,5(02):379. |
| [2] | Lu Q H;Yao K L;D Xi et al.[J].Journal of Magnetism and Magnetic Materials,2006,301:44. |
| [3] | Wang Lingyan;Luo Jin;Fan Quan et al.[J].Journal of Physical Chemistry B,2005,109:21593. |
| [4] | Zeng Hao;Li Jing;Wang Z L et al.[J].Nano Letters,2004,4(01):187. |
| [5] | Lyon Jennifer L;Fleming David A;Ston Matthew B et al.[J].Nano Letters,2004,4(04):719. |
| [6] | Liu ZL;Wang HB;Lu QH;Du GH;Peng L;Du YQ;Zhang SM;Yao KL .Synthesis and characterization of ultrafine well-dispersed magnetic nanoparticles[J].Journal of Magnetism and Magnetic Materials,2004(2/3):258-262. |
| [7] | Chen Xiaobo;Lou Yongbing et al.[J].Nano Letters,2003,3(06):799. |
| [8] | Kinoshita T;Seino S;Okitsu K et al.[J].Journal of Alloys and Compounds,2003,359:46. |
| [9] | 彭菊村,卢强华,吴波英.金纳米颗粒水相合成工艺研究[J].稀有金属材料与工程,2006(06):954-958. |
| [10] | 汪汉斌,刘祖黎,卢强华,彭丽,姚凯伦.柠檬酸根对纳米Fe3O4颗粒的生长及性能的影响[J].无机化学学报,2004(11):1279-1283. |
| [11] | 刘祖黎,彭莉,姚凯伦,卢强华,汪汉斌.超小型Fe3O4/Au纳米复合微粒的制备与表征[J].功能材料,2005(02):196-199. |
| [12] | Kenneth R.Brown;Daniel G.Walter;Michael J.Natan .Seeding of Coloidal Au Nanoparticle Solutions.2.Improved Control of Particle Size and Shpae[J].Chemistry of Materials,2000(2):306-313. |
| [13] | Marie-Christine Daniel;Didier Astruc .Gold Nanoparticles:Assembly,Supramolecular Chemistry,Quantum-Size-Related Properties,and Applications toward Biology,Catalysis,and Nanotechnology[J].Chemical Reviews,2004(1):293-346. |
| [14] | Jensen T R;Duval M L;Kelly K L et al.[J].Journal of Physical Chemistry B,1999,103:9846. |
| [15] | Link S;El-Sayed M A .[J].Journal of Physical Chemistry B,1999,103:4212. |
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