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Citation: Li Huan-Yong, Hu Rong-Zu, Zhang Hong, Jie Wan-Qi. Kinetics of Formation of ZnSe Nanocrystals under Linear Temperature Increase Condition[J]. Acta Physico-Chimica Sinica, ;2003, 19(04): 315-319. doi: 10.3866/PKU.WHXB20030407 shu

Kinetics of Formation of ZnSe Nanocrystals under Linear Temperature Increase Condition

1.
State key laboratory of Solidification Processing, Northwest Polytechnical University, Xi′an　710072;Chemistry Department of Northwest University, Xi′an　710069

Received Date: 17 July 2002
Available Online: 15 April 2003

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)＝ ,209.61 kJ•mol－1 and 1015.7 s－1, respectively. The kinetics equation is . The calculated results are in accordance with the experiments. ZnO nanocrystal with less than 40 nm sizes has also been obtained from ZnSe nanocrystals.
- ZnSe nanocrystals;Process of ZnSe formation;Thermoanalysis kinetics;　TG-DTG
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