| Autor: |
Halonen, Niina, Rautio, Aatto, Leino, Anne-Riikka, Kyllönen, Teemu, Tóth, Géza, Lappalainen, Jyrki, Kordás, Krisztián, Huuhtanen, Mika, Keiski, Riitta L., Sápi, András, Szabó, Mária, Kukovecz, Ákos, Kónya, Zoltán, Kiricsi, Imre, Ajayan, Pulickel M., Vajtai, Robert |
| Zdroj: |
ACS Nano; March 2010, Vol. 4 Issue: 4 p2003-2008, 6p |
| Abstrakt: |
Three-dimensional carbon nanotube scaffolds created using micromachined Si/SiO2templates 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−1and 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. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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