کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9605677 | 44182 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Self-assembly to prepare the ordered hexagonal mesostructured tin oxide/surfactant composite and its room temperature optical properties
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Through self-assembly approach, tin oxide with an ordered hexagonal mesostructured tin oxide/surfactant composite (Sn-H) was synthesized in the presence of cationic surfactant (cetyltrimethylammonium bromide, CTAB: CH3(CH2)15N+(CH3)3Brâ) at room temperature. Powder X-ray diffraction (XRD) and transmission electron microscopy (TEM) results clearly showed the existence of ordered hexagonal mesostructure in the composite. According to the X-ray photoelectron spectroscopy (XPS) spectrum, the red-shift in the 3d5/2 peak position from the crystalline SnO2 to the Sn-H composite indicates a change of microenvironments for tin, and this change is attributed to the interactions of surfactant CTAB with SnO2. In comparison with SnO2 bulk, the red-shift of the adsorption band of Sn-H composite can be clearly seen. The emission band of room temperature photoluminescence (RTPL) in the green spectral range was observed. The results obtained indicate that the interfacial effect between the tin oxide and the surfactants plays an important role in the optical properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 171, Issue 2, 30 April 2005, Pages 161-165
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 171, Issue 2, 30 April 2005, Pages 161-165
نویسندگان
Yude Wang, Ma Chunlai, Sun Xiaodan, Shuo Zhang, Hengde Li,