Three-dimensional carbon nanotube scaffolds as particulate filters and catalyst support membranes

Niina Halonen, Aatto Rautio, Anne Riikka Leino, Teemu KyllÖnen, Géza Tóth, Jyrki Lappalainen, Krisztián Kordás, Mika Huuhtanen, Riitta L. Keiski, András Sápi, Mária Szabó, Akos Kukovecz, Zoltán Kónya, Imre Kiricsi, Pulickel M. Ajayan, Robert Vajtai

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

Three-dimensional carbon nanotube scaffolds created using micromachined Si/SiO2 templates are used as nanoparticulate filters and support membranes for gas-phase heterogeneous catalysis. The filtering efficiency of better than 99% is shown for the scaffolds in filtering submicrometer particles from air. In the hydrogenation of propene to propane reaction low activation energy of Ea ∼27.8 ± 0.6 kJ·mol-1, a considerably high turnover rate of ∼1.1 molecules·Pd site -1·s-1 and durable activity for the reaction are observed with Pd decorated membranes. It is demonstrated that appropriate engineering of macroscopic-ordered nanotube architectures can lead to multifunctional applications.

Original languageEnglish
Pages (from-to)2003-2008
Number of pages6
JournalACS Nano
Volume4
Issue number4
DOIs
Publication statusPublished - Apr 27 2010

Keywords

  • Air filter
  • Carbon nanotubes
  • Catalyst support
  • Propene
  • Submicrometer filtering

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

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  • Cite this

    Halonen, N., Rautio, A., Leino, A. R., KyllÖnen, T., Tóth, G., Lappalainen, J., Kordás, K., Huuhtanen, M., Keiski, R. L., Sápi, A., Szabó, M., Kukovecz, A., Kónya, Z., Kiricsi, I., Ajayan, P. M., & Vajtai, R. (2010). Three-dimensional carbon nanotube scaffolds as particulate filters and catalyst support membranes. ACS Nano, 4(4), 2003-2008. https://doi.org/10.1021/nn100150x