کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1491778 | 992360 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation of h-BN nano-tubes, -bamboos, and -fibers from borazine oligomer with alumina porous template
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
h-BN nano-tubes, -bamboos, and -fibers were prepared separately from borazine oligomers using an alumina porous template at different wetting times of 20 h, 40 h and 2 weeks at room temperature, respectively. The borazine oligomer in the template was transformed to the h-BN nano-materials by two-step heat-treatment at 600 and 1200 °C in flowing N2. The FT-IR result confirmed the formation of BN. TEM and SEM images showed the formation of the nano-tubes in diameters 200–300 nm with thin walls about 10–20 nm thick, nano-bamboos 200–300 nm wide with knots at the separations of 0.5–1 μm, and the nano-fibers 15–20 μm long with fine crystallized BN particles. The mechanism for the formation of h-BN nano-tubes, -bamboos and -fibers is proposed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 43, Issue 2, 5 February 2008, Pages 251–256
Journal: Materials Research Bulletin - Volume 43, Issue 2, 5 February 2008, Pages 251–256
نویسندگان
Yuting Wang, Shiro Shimada, Yasunori Yamamoto, Norio Miyaura,