Abstract
Effect of carbon nanotubes (CNT) crystal structure on chemical activity (SAR) has been studied extensively in CNT suspension. However, these effects are experimentally underexplored for gas-CNT interactions (heterogeneous catalysis). We report about ultra-high vacuum kinetics experiments on metallic, semiconducting, and mixed CNTs. A weak and probe molecule specific SAR is present for adsorption inside the CNTs but not for the population of external sites. The experimental data are in part consistent with theoretical predictions.
Original language | English (US) |
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Pages (from-to) | 227-231 |
Number of pages | 5 |
Journal | Chemical Physics Letters |
Volume | 476 |
Issue number | 4-6 |
DOIs | |
State | Published - Jun 25 2009 |
Bibliographical note
Funding Information:Financial support by the Chemical Sciences, Geosciences and Biosciences Division, Office of Basic Energy Sciences, Office of Science, US Department of Energy is acknowledged through Grant DE-FG02-08 ER15987.