Possible effect of carbon nanotube diameter on gas-surface interactions - The case of benzene, water, and n-pentane adsorption on SWCNTs at ultra-high vacuum conditions

M. Komarneni, A. Sand, J. Goering, U. Burghaus, M. Lu, L. Monica Veca, Ya Ping Sun

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

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 languageEnglish (US)
Pages (from-to)227-231
Number of pages5
JournalChemical Physics Letters
Volume476
Issue number4-6
DOIs
StatePublished - 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.

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