高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (3): 405.

• 研究论文 • 上一篇    下一篇

γ-Fe2O3纳米粒子的(湿)固相研磨法制备研究

姜国华, 姜继森   

  1. 华东师范大学物理系化学系, 纳米功能材料与器件应用研究中心, 上海 200062
  • 收稿日期:2003-06-02 出版日期:2004-03-24 发布日期:2004-03-24
  • 通讯作者: 姜继森(1960年出生),男,博士,教授,主要从事纳米材料及胶体与界面科学研究.E-mail;jsjiang@phy.ecnu.edu.cn E-mail:jsjiang@phy.ecnu.edu.cn
  • 基金资助:

    上海市科委纳米专项基金(批准号;0352nm113;0352nm123);教育部留学回国人员启动基金资助

Preparation of γ-Fe2O3 Nanoparticles by Solid(wet)-phase Grinding

JIANG Guo-Hua, JIANG Ji-Sen   

  1. Department of Physics, Department of Chemistry, Center for Functional Nanomaterials and Devices, East China Normal University, Shanghai 200062, China
  • Received:2003-06-02 Online:2004-03-24 Published:2004-03-24

摘要: 在聚乙二醇(PEG-400)存在下,于室温下研磨适量FeCl3与NaOH的混合物制备了γ-Fe2O3纳米粒子.所得各样品用XRD,Mossbauer谱,TEM,Tg-DTA和FTIR等手段进行了表征.结果表明,研磨后的样品经60℃干燥2h后即可得结晶较差的γ-Fe2O3纳米粉体,经450℃热处理1h后得粒径约为30nm结晶较好的γ-Fe2O3纳米粒子,经500℃热处理1h后得到粒径约为40nm、结晶完好的γ-Fe2O3纳米粒子.

关键词: &gamma, -Fe2O3, PEG-400, 纳米粒子, 研磨

Abstract: In this paper, a new method to prepare γ Fe2O3 nanoparticles was described. In the presence of polyethylene glycol(PEG 400), the mixture of FeCl3·6H2O and NaOH was ground and the γ Fe2O3 nanoparticles were prepared. The product obtained was washed and dried at 60 ℃ and calcined at different temperatures for 1 h. XRD, Mssbauer Spectroscopy, TEM, TG DTA and FTIR were used to characterize the samples. The results show that after dried at 60 ℃ for 2 h, the as ground sample was transformed into poor crystalline γ Fe2O3 ultrafine powder. After being calcined at 450 ℃ for 1 h, the ultrafine powder became good crystalline γ Fe2O3 nanoparticles with particle size of 30 nm. After being calcined at 500 ℃ for 1 h, perfect crystalline γ Fe2O3 nanoparticles were gotten with a particle size of 40 nm.

Key words: γ-Fe2O3, PEG 400, Nanoparticles, Grinding

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