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题名: Purification of SWNTs using high-speed centrifugation
作者: Yu HB(于海波) ; Li WR(李文荣) ; Qu YL(曲艳丽) ; Tian XJ(田孝军) ; Dong ZL(董再励) ; Wang YC(王越超) ; Qin, Ke ; Ren, Wencai
作者部门: 机器人学研究室
会议名称: 3rd IEEE International Conference of Nano/Micro Engineered and Molecular Systems
会议日期: January 6-9, 2008
会议地点: Sanya, China
会议主办者: IEEE, State Key Lab Multi Spectral Informat Proc Technol, Chinese Soc Micro Nano Technol, Ctr Micro & Nano Syst, IEEE Nanotechnol Council, Shenyang Inst Automat, Univ California, UCLA, Ctr Cell Control, Global Engn Technol Inst, Nanosurf AG, Smart Instruments Nanosci & Nanotechnol, US Army Int Technol Ctr, Pacific
会议录: 2008 3RD IEEE INTERNATIONAL CONFERENCE ON NANO/MICRO ENGINEERED AND MOLECULAR SYSTEMS, VOLS 1-3
会议录出版者: IEEE
会议录出版地: NEW YORK
出版日期: 2008
页码: 513-516
收录类别: CPCI(ISTP) ; EI
ISBN号: 978-1-4244-1907-4
关键词: centrifugation ; CNTs ; dispersion ; purification ; SWNTs
摘要: For eventual commercial applications of single-walled carbon nanotubes (SWNTs) in nanoscale devices, it will be very important to realize effective purification of SWNTs. We have developed a simple method to purify as-synthesized SWNTs by centrifugal force in an aqueous solution of sodium dodecyl sulfate (SDS). The method proposed in this paper can effectively remove impurities such as metal catalyst particles, graphitic nanoparticles and amorphous carbon. Our method takes advantage of the fact that more massive particles sediment faster than less massive particles. Through adjusting relative centrifugal force, we can respectively remove metal catalyst particles and carbon nanoparticles from SWNTs by centrifugation. SEM results indicate that the concentration of the SWNT solution decreased when the number of times of centrifugation is increased. Raman spectra suggest that the purity of the SWNT solution increased when the number of times of centrifugation is increased. These experimental results indicate that the centrifugal technique can provide a rapid and repeatable purification of SWNTs.
语种: 英语
产权排序: 1
内容类型: 会议论文
URI标识: http://ir.sia.cn/handle/173321/8836
Appears in Collections:机器人学研究室_会议论文

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Recommended Citation:
于海波; 李文荣; 曲艳丽; 田孝军; 董再励; 王越超; Qin, Ke; Ren, Wencai.Purification of SWNTs using high-speed centrifugation.见:IEEE .2008 3RD IEEE INTERNATIONAL CONFERENCE ON NANO/MICRO ENGINEERED AND MOLECULAR SYSTEMS, VOLS 1-3,NEW YORK,2008,513-516
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