کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7853294 | 1508870 | 2014 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nitrogen ion casting on vertically aligned carbon nanotubes: Tip and sidewall chemical modification
ترجمه فارسی عنوان
ریخته گری یون نیتروژن بر روی نانولوله های کربنی عمودی تراز: اصلاح شیمیایی نوک و جانبی
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
چکیده انگلیسی
Nitrogen inclusion in vertically aligned carbon nanotubes (v-CNTs) was performed in situ and in ultra-high vacuum by nitrogen ion implantation and evaluated by X-ray photoelectron spectromicroscopy. The creation of defects induced by the ions drives the formation of different nitrogen species (pyridinic, pyrrolic, and graphitic) at the CNT surface. While nitrogen implantation in CNT sidewalls has results similar to implantation in graphene, where mainly nitrogen sp2 bonding configuration occurs, we observed a different behaviour at the CNT tips, where nitrogen incorporation is also more efficient. A large amount of pyrrolic nitrogen is observed at the CNT tips compared to the amount at the CNT sidewalls for the same ion implantation parameters. This indicates a different reactivity of the CNT tips where the presence of natural defects may be involved in different nitrogen bonding formations between carbon and nitrogen with respect to the CNT sidewalls.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbon - Volume 77, October 2014, Pages 319-328
Journal: Carbon - Volume 77, October 2014, Pages 319-328
نویسندگان
M. Scardamaglia, M. Amati, B. Llorente, P. Mudimela, J.-F. Colomer, J. Ghijsen, C. Ewels, R. Snyders, L. Gregoratti, C. Bittencourt,