采用原位法一步合成了α-Fe2O3和Fe2O3/Ag磁性核壳粒子,通过XRD,TEM和UV光谱研究了Fe2O3/Ag核壳纳米复合材料的结构.结果表明:一步合成了α- Fe2O3,纳米α-Fe2O3粒子表面被Ag层包覆,纳米α-Fe2O3核的平均粒径大约为20～30nm,Ag壳层厚度为10～15nm,形成了核壳结构的电磁复合纳米粒子.α-Fe2O3/Ag核壳纳米复合材料导电率为0.317S/cm.α-Fe2O3粒子具有超顺磁性,饱和磁化强度为1.28A· m2·kg-1,矫顽力为8.2784kA·m-1.α-Fe2O3/Ag核壳粒子饱和磁化强度为0.92A·m2·kg-1,其矫顽力与α-Fe2O3粒子基本一致.
参考文献
| [1] | Yuping Bao;Hector Calderon;Kannan M. Krishnan .Synthesis and Characterization of Magnetic-Optical Co-Au Core-Shell Nanoparticles[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2007(5):1941-1944. |
| [2] | Zhichuan Xu;Yanglong Hou;Shouheng Sun .Magnetic Core/Shell Fe3O4/Au and Fe3O4/Au/Ag Nanoparticles with Tunable Plasmonic Properties[J].Journal of the American Chemical Society,2007(28):8698-8699. |
| [3] | Xuan, SH;Wang, YXJ;Yu, JC;Leung, KCF .Preparation, Characterization, and Catalytic Activity of Core/Shell Fe3O4@Polyaniline@Au Nanocomposites[J].Langmuir: The ACS Journal of Surfaces and Colloids,2009(19):11835-11843. |
| [4] | Armelao, L;Pascolini, M;Biasiolo, E;Tondello, E;Bottaro, G;Carbonare, MD;D'Arrigo, A;Leon, A .Innovative metal oxide-based substrates for DNA microarrays[J].Inorganica Chimica Acta,2008(12/13):3603-3608. |
| [5] | Satoshi Seino;Takuya Kinoshita;Yohei Otome;kenji okitsu;Takashi Nakagawa;Takao A.Yamamoto .Magnetic CompositeNanopartice of Au/gamma-Fe_2O_3 Synthesized by Gamma-Ray irradiation[J].Chemistry Letters,2003(8):690-691. |
| [6] | Ling Zhang;Yong-Hua Dou;Hong-Chen Gu .Synthesis of Ag-Fe_3O_4 heterodimeric nanoparticles[J].Journal of Colloid and Interface Science,2006(2):660-664. |
| [7] | BAO Jie;CHEN Wei;LIU Tao-tao et al.Bifunctional Au-Fe3O4 nanoparticles for protein separation[J].Nanotechnology,2007,1(04):293-298. |
| [8] | Liu XQ.;Shen YS.;Tao SW. .PREPARATION AND CHARACTERIZATION OF NANOCRYSTALLINE ALPHA-FE2O3 BY A SOL-GEL PROCESS[J].Sensors and Actuators, B. Chemical,1997(2/3):161-165. |
| [9] | 郭巍;郑振忠;吴行 等.pH值、烧结温度可控制备磁性Fe2O3纳米粒子[J].电子元件与材料,2010,29(12):31-34. |
| [10] | GU Jian-min;LI Si heng;WANG En-bo et al.Single-crystalline α-Fe2O3 with hierarchical structures:controllable synthesis,formation mechanism and photocatalytic properties[J].Solid-State Chemistry,2009,182(05):1265-1272. |
| [11] | YASUHIRO KONISHI;TAKESHI KAWAMURA;SATORU ASAI .Preparation and properties of fine hematite powders by hydrolysis of iron carboxylate solutions[J].Metallurgical and Materials Transactions B:Process Metallurgy and Materials Processing Science,1994,25(02):165-170. |
| [12] | 冯琳,宋延林,万梅香,江雷.磁性氧化铁纳米粒子的研究进展[J].科学通报,2001(16):1321-1324. |
| [13] | 刘海峰,彭同江,孙红娟.直接共沉淀法制备掺杂α-Fe2O3及其气敏性能的初步研究[J].中国粉体技术,2006(02):11-14,17. |
| [14] | Wang XH.;Wang LX.;Jing XB.;Wang FS.;Geng YH. .THERMAL BEHAVIORS OF DOPED POLYANILINE[J].Synthetic Metals,1995(1/3):265-266. |
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