Journal
CARBON
Volume 108, Issue -, Pages 423-432Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2016.07.034
Keywords
-
Funding
- EPSRC [EP/I02946X/1, EP/L001896/1]
- Thomas Swan Ltd.
- FP7 Project MATFLEXEND [604093]
- EPSRC [EP/G007314/1, EP/L001896/1, EP/I02946X/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/L001896/1, EP/I02946X/1, EP/G007314/1, 1138467] Funding Source: researchfish
Ask authors/readers for more resources
As-synthesised single-walled carbon nanotubes (SWCNTs) are often contaminated with amorphous carbon and residual catalyst particles. These contaminants have a detrimental effect on the effective mechanical and electronic properties, limiting their performance in many applications. A comparative series of SWCNT purifications including acid treatments, gas phase purifications and recently-developed reductive purifications have been conducted using a single commercial SWCNT type (Tuball (TM)). Each of the purification procedures was selected for its potential scalability to bulk quantities and evaluated for the extent of impurity removal, SWCNT damage, and overall yield. Raman spectra confirmed that reductive purification using sodium naphthalide gave the lowest D/G ratio, suggesting that the sp(2) carbon framework was most effectively preserved, whilst removing a large proportion (similar to 74%) of the metal impurities. Conversely, nitric acid treatment was most effective at removing virtually all the metal impurities, but the sp(2) carbon framework was most heavily damaged in the process. The development of scalable, one pot, reductive separations provides a useful new approach to SWCNT purification. (C) 2016 The Authors. Published by Elsevier Ltd.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available