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

Halonen, Niina and Rautio, Aatto and Leino, Anne-Riikka and Kyllonen, Teemu and Tóth, Géza and Kordás, Krisztián and Sápi, András and Szabó, Mária and Kukovecz, Ákos and Kónya, Zoltán and Kiricsi, Imre (2010) Three-Dimensional Carbon Nanotube Scaffolds as Particulate Filters and Catalyst Support Membranes. ACS Nano, 4 (4). pp. 2003-2008. ISSN 1936-0851

Text nn100150x.pdf Restricted to Registered users only Download (1MB) | Request a copy

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 E-a similar to 27.8 +/- 0.61 kJ . mol(-1), a considerably high turnover rate of similar to 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.

Actions (login required)

Edit Item