One-pot purification of single-walled carbon nanotube in a mild polyphosphoric acid

POLY 210

Sang-Wook Han, tariwooks@hanmail.net1, Se-Jin Oh, sejin@chungbuk.ac.kr1, Loon-Seng Tan, Loon-Seng.Tan@afrl.af.mil2, and Jong-Beom Baek, jbbaek@chungbuk.ac.kr1. (1) School of Chemical Engineering, Chungbuk National University, 12 Gaeshin, Heungduk, Cheongju, Chungbuk, 361-763, South Korea, (2) Polymer Branch, AFRL/MLBP, U. S. Air Force Research Laboratory, 2941 P. Street, Suite 1, Wright-Patterson AFB, OH 45433-7750
One-pot process for the homogeneous dispersion and purification of SWNT was attempted in a mild and less destructive medium in polyphosphoric acid (PPA) with or without additional phosphorous pentoxide (P2O5) at various temperatures 130, 160, and 190„aC. On the basis of results from ICP, TGA, XRD, Raman spectroscopy, and SEM analysis, we could confirm that the medium was efficient enough to remove persisting metallic impurities in SWNT without or with little damage to the CNT framework. Thus, current method envisions that purification and functionalization of SWNT could be achieved at the same time.
 

General Papers: Polymers in Nanotechnology
6:00 PM-8:00 PM, Sunday, August 19, 2007 BCEC -- Exhibit Hall - B2, Poster

Division of Polymer Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007