کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1488845 992296 2013 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Large-scale synthesis of few-walled carbon nanotubes by DC arc discharge in low-pressure flowing air
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Large-scale synthesis of few-walled carbon nanotubes by DC arc discharge in low-pressure flowing air
چکیده انگلیسی


• The FWCNTs can be synthesized effectively by DC arc discharge in low-pressure flowing air.
• The as-synthesized FWCNTs consist of SWCNTs, DWCNTs and TWCNTs.
• This approach presents an effective, low-cost synthesis of FWCNTs.

At low-pressure flowing air condition, few-walled carbon nanotubes (FWCNTs) have effectively been synthesized by arc discharge process with iron as a catalyst and sulfur as a promoter. TEM observations show that the as-synthesized FWCNTs with the diameter ranging from 1.6 to 6.0 nm consist of single-walled carbon nanotubes, double-walled carbon nanotubes and triple-walled carbon nanotubes. Our findings reveal that the yield of FWCNTs is found to be dependent on the air pressure, and the air pressure between 6 and 12 kPa is the most effective condition for yielding high quality FWCNTs. This approach presents an effective, low-cost synthesis of FWCNTs using low-pressure flowing air as buffer gas.

This approach presents an effective, low-cost synthesis of FWCNTs using low-pressure flowing air as the arc discharge ambient atmosphere, which also opens up new possibilities for low-cost synthesis of high-quality SWCNTs by tuning the arc discharge parameters.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 48, Issue 9, September 2013, Pages 3232–3235
نویسندگان
, , , , ,