Chem. J. Chinese Universities ›› 2004, Vol. 25 ›› Issue (3): 405.

• Articles • Previous Articles     Next Articles

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

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

CLC Number: 

TrendMD: