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CHARACTERIZATION OF ZnAl2O4 NANOCRYSTALS PREPARED BY COPRECIPITATION AND MICROEMULSION TECHNIQUES

V. Ciupina1,* , I. Carazeanu2, G. Prodan1

Affiliation

  1. Ovidius University, Electron Microscopy Laboratory, 124 Mamaia Bldv., Constantza, Romania
  2. Ovidius University, Chemistry Department, 124 Mamaia Bldv., Constantza, Romania

Abstract

Nanometer-sized zinc aluminate (ZnAl2O4) particles were synthesized by coprecipitation method using NH3 like precipitation agent and the reverse micelle method using like cationic surfactant cetyltrimethylammonium bromide (CTAB), from Zn(NO3)2 and Al(NO3)3 an ideal cation stoichiometry for ZnAl2O4 spinel. XRD analysis for their crystal structure and TEM for their texture characterized the materials obtained after heating at 500 – 800 °C. The TEM photographs reveal that both of them, coprecipitation and the reverse micelle method, are made up of primary nanoparticles in the size range 3-15 nm..

Keywords

CTAB, Coprecipitation, TEM, HRTEM, XRD, SAED, Scherrer.

Submitted at: July 21, 2003
Accepted at: Dec. 6, 2004

Citation

V. Ciupina, I. Carazeanu, G. Prodan, CHARACTERIZATION OF ZnAl2O4 NANOCRYSTALS PREPARED BY COPRECIPITATION AND MICROEMULSION TECHNIQUES, Journal of Optoelectronics and Advanced Materials Vol. 6, Iss. 4, pp. 1317-1322 (2004)