Reaction of NO2 with purified single-walled carbon nanotubes

CHED 332

PS. Ting, tingp1@citadel.edu and Holly M. Bevsek, holly.bevsek@citadel.edu. Department of Chemistry, The Citadel, 171 Moultrie Street, Charleston, SC 29409
The investigation of reactions of carbon nanotubes with small molecules is a very active area of research. However, these studies have yielded contradictory results. For example, some experiments show that NO2 interacts strongly with single-walled carbon nanotubes (SWNTs) while others show only weak interaction. These contradictory results are believed to be due to differences in purity and purification schemes. In this study, the reactivity of purified SWNT samples with NO2 will be compared to unpurified samples to assess the effect of the purification process. Diffuse reflectance infrared Fourier transform spectroscopy will be utilized to follow the reaction and identify possible products. Both high and low pressures of NO2 will be utilized to determine whether different reaction mechanisms may exist at these different pressure regimes. This information together with estimates of product binding energies will be used to further develop a mechanism for the NO2-nanotube reaction.