کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1556108 | 999172 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of Annealing Temperature on Cu-Doped ZnO Nanosheets
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
شیمی مواد
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effects of Annealing Temperature on Cu-Doped ZnO Nanosheets Effects of Annealing Temperature on Cu-Doped ZnO Nanosheets](/preview/png/1556108.png)
چکیده انگلیسی
The synthesis of Cu-doped ZnO nanosheets at room temperature was reported in our previous paper. The effects of annealing temperature on Cu-doped ZnO nanosheets were studied in this paper. Cu-doped ZnO nanosheets were annealed at 200-500 °C in air. The annealed specimens were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and transmission electron microscopy (TEM). The results show that Cu concentration in Cu-doped ZnO nanosheets reduced with increasing annealing temperature. When annealing temperature was lower than Zn melting point (410 °C), the morphologies of the Cu-doped ZnO nanosheets remained nearly the same as that before annealing. However, when the annealing temperature was over Zn melting point, Cu-doped ZnO nanosheets changed to nanowires, wormlike nanosheets or did not change. The change of Cu concentration in Cu-doped ZnO nanosheets is explained by oxidation thermodynamics. A physical model is suggested to explain the morphology changes of Cu-doped ZnO nanosheets, based on the existence of Cu-rich layer beneath Cu-doped ZnO nanosheets.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Science & Technology - Volume 30, Issue 9, September 2014, Pages 860-866
Journal: Journal of Materials Science & Technology - Volume 30, Issue 9, September 2014, Pages 860-866
نویسندگان
Yuliang Liu, Junpeng Wang, Chunhua Xu, Zishu Si, Shensheng Xu, Sanqiang Shi,