提出了使用CuO增强Fe(NO3)3溶液水解制备水铁矿(Fe5 O7(OH)?4H2 O)纳米团簇的方法.将适量的CuO粉末加入到沸腾的Fe(NO3)3溶液中,将发生沉淀反应生成纳米尺寸的铁氧化物.用X射线衍射仪、透射电子显微镜、振动样品磁强计、X射线能谱仪、X射线光电子能谱分别对沉淀生成的产物的形态和大小、磁化强度、晶体结构和化学组成进行表征.产物是由大小约6．13 nm的微粒聚集形成的弱磁水铁矿纳米团簇.纳米团簇表面吸附有少量Fe(NO3)3,大小约为40 nm.本文提出了一种通过增强水解制备纳米尺寸氧化物的新方法.
A new method of preparing Ferrihydrite(Fe5 O7 (OH)?4H2 O)nanoclusters using Fe(NO3 )3 solution hydrolysis enhanced by CuO.Ferrihydrite nanocrystals during precipitation will gather to form Ferrihydrite nanoclusters.The morphology and size,magnetization,crystal structure and chemical composition of the pre-cipitated products were characterized by TEM,VSM,XRD,EDX and XPS.The results show that the product is weakly magnetic nanoclusters,the size of nanoclusters are about 40 nm gathered by about 6.13 nm Fe5 O7-(OH)?4H2 O nanocrystallites,and the surface of the nanoclusters are absorbed by Fe(NO3 )3 .A new method of preparing nano-sized iron oxide using hydrolysis enhanced by CuO is proposed.
参考文献
| [1] | M. A. Willard;L. K. Kurihara;E. E. Carpenter.Chemically prepared magnetic nanoparticles[J].International Materials Reviews,20043/4(3/4):125-170. |
| [2] | Xun Wang;Jing Zhuang;Qing Peng;Yadong Li.A general strategy for nanocrystal synthesis[J].Nature,20057055(7055):121-124. |
| [3] | Brian L.Cushing;Vladimir L.Kolesnichenko;Charles J.O'Connor.Recent Advances in the Liquid-Phase Syntheses of Inorganic Nanoparticles[J].Chemical Reviews,20049(9):3893-3946. |
| [4] | Arun Narayanaswamy;Huifang Xu;Narayan Pradhan;Xiaogang Peng.Crystalline Nanoflowers with Different Chemical Compositions and Physical Properties Grown by Limited Ligand Protection[J].Angewandte Chemie,200632(32):5361-5364. |
| [5] | Sepelak V;Feldhoff A;Heitjans P;Krumeich F;Menzel D;Litterst FJ;Bergmann I;Becker KD.Nonequilibrium cation distribution, canted spin arrangement, and enhanced magnetization in nanosized MgFe2O4 prepared by a one-step mechanochemical route[J].Chemistry of Materials: A Publication of the American Chemistry Society,200613(13):3057-3067. |
| [6] | Xiaohe Liu;Guanzhou Qiu;Aiguo Yan.Hydrothermal synthesis and characterization of alpha-FeOOH and alpha-Fe_2O_3 uniform nanocrystallines[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,20071/2(1/2):216-220. |
| [7] | K. Iliopoulos;D. Athanasiou;A. Meristoudi;N. Vainos;S. Pispas;S. Courts.Nonlinear optical properties of Au nanoclusters encapsulated into hybrid block copolymer micelles[J].Physica Status Solidi, A. Applied Research,200811(11):2635-2638. |
| [8] | Athanasia Kostopoulou;Ioannis Tsiaoussis;Alexandros Lappas.Magnetic iron oxide nanoclusters with tunable optical response[J].Photonics and Nanostructures: Fundamentals and Applications,20112(2):201-206. |
| [9] | Jianping Ge;Yongxing Hu;Maurizio Biasini.Superparamagnetic Magnetite Colloidal Nanocrystal Clusters[J].Angewandte Chemie,200723(23):4342-4345. |
| [10] | Rose J.;Masion A.;Bottero JY.;Manceau A..STRUCTURE AND MECHANISMS OF FORMATION OF FEOOH(NO3) OLIGOMERS IN THE EARLY STAGES OF HYDROLYSIS[J].Langmuir: The ACS Journal of Surfaces and Colloids,199712(12):3240-3246. |
| [11] | M. Ristic;E. De Grave;S. Music;S. Popovic;Z. Orehovec.Transformation of low crystalline ferrihydrite to α-Fe2O3 in the solid state[J].Journal of Molecular Structure,20070(0):454-460. |
| [12] | Brullot, W.;Reddy, N.K.;Wouters, J.;Valev, V.K.;Goderis, B.;Vermant, J.;Verbiest, T..Versatile ferrofluids based on polyethylene glycol coated iron oxide nanoparticles[J].Journal of Magnetism and Magnetic Materials,201211(11):1919-1925. |
| [13] | A study of modified Fe_3O_4 nanoparticles for the synthesis of ionic ferrofluids[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,201023(23):P.6977. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%