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Three-Dimensional Carbon Nanotube Scaffolds as Particulate Filters and Catalyst Support Membranes

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...

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Published in:ACS nano 2010-04, Vol.4 (4), p.2003-2008
Main Authors: 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
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cited_by cdi_FETCH-LOGICAL-a314t-966adba24724b90c55a44c9718e750f4c342d1f41c57dd84ae65f392eefa7c243
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container_end_page 2008
container_issue 4
container_start_page 2003
container_title ACS nano
container_volume 4
creator 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
description 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 E a ∼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.
doi_str_mv 10.1021/nn100150x
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title Three-Dimensional Carbon Nanotube Scaffolds as Particulate Filters and Catalyst Support Membranes
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