کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1491309 | 1510727 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of Cu/SiO2 composite films via gamma-irradiation route and their optical absorption properties
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The Cu particles or clusters dispersed mesoporous SiO2 composite films were prepared by a new method: first the matrix SiO2 films were prepared by sol-gel process combined with the dip-coating technique, and then they were soaked in Cu(NO3)2 solutions followed by γ-ray irradiation at room temperature and in ambient pressure. Thus, the prepared Cu/SiO2 composite films were examined by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy and optical absorption spectroscopy. It has been shown that the Cu particles grown within the porous SiO2 films are very small, and they are isolated and dispersed from each other with very narrow size distributions. With the Cu particles size changing, an interesting peak shift was observed in the optical absorption measurement. Possible mechanisms of this behavior are discussed in this paper.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 43, Issues 8â9, 4 Augustâ4 September 2008, Pages 2421-2426
Journal: Materials Research Bulletin - Volume 43, Issues 8â9, 4 Augustâ4 September 2008, Pages 2421-2426
نویسندگان
Xiaojun Zhang, Dongen Zhang, Xiaomin Ni, Jing Chen, Huagui Zheng,