화학공학소재연구정보센터
Materials Research Bulletin, Vol.48, No.11, 4834-4838, 2013
Facile synthesis and crystal growth dynamics study of MgAl2O4 nanocrystals
Well-dispersed MgAl2O4 nanocrystalline was prepared by a convenient salt-assistant combustion process using low-toxic glycine as fuel, low-cost Mg(NO3)(2)center dot 6H(2)O and Al(NO3)(3)center dot 9H(2)O as raw materials. By changing the reaction condition such as glycine dosage, the amount of inert-salt, inert-salt types and calcinations temperature, the optimal conditions to synthesize MgAl2O4 nanocrystalline were explored. The obtained results showed that parameters inert-salt and fuel dosage in the process have an important effect on the structure properties of samples. The obtained products were characterized by XRD and TEM. TEM images revealed that the products were composed of well-dispersed cube-like nanocrystals with the size of 60-80 nm. The synthesis mechanism of MgAl2O4 nanocrystals was discussed. The crystal growth dynamics of MgAl2O4 nanocrystals was studied and the activation energy of MgAl2O4 nanocrystals was 39.1 kJ/mol. (C) 2013 Elsevier Ltd. All rights reserved.