Abstract
The kinetics of formation of ZnSe nanocrystals from the complex ZnSe(C2H8N2) has been investigated by means of non isothermal TG DTG at various heating rates of 5.0,10.0,15.0 and 20.0 ℃ · min- 1.The results show that the formation of ZnSe nanocrystals was controlled by three dimension diffusion.The most probable kinetic function in differential form,and in integral form,the apparent activation energy(E) and the pre exponential constant(A) of the process are f(α )=,G(α )=[(1+ α )1/3- 1]2,209.61 kJ· mol- 1 and 1015.7 s- 1,respectively.The kinetics equation is IMG SRC="IMAGE/07290039.JPG" HEIGHT=24 WIDTH=298The calculated results are in accordance with the experiments.ZnO nanocrystal with less than 40 nm size has also been obtained from ZnSe nanocrystals.
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