Synthesis of Vertically Aligned Carbon Nanotubes on Silicalite-1 Monolayer-Supported Substrate

Title
Synthesis of Vertically Aligned Carbon Nanotubes on Silicalite-1 Monolayer-Supported Substrate
Author(s)
김석영조위Bijay Basnet[Bijay Basnet]김익진[김익진]
Keywords
CHEMICAL-VAPOR-DEPOSITION; IRON-OXIDE NANOPARTICLES; ANODIC ALUMINUM-OXIDE; MICELLAR THIN-FILMS; GROWTH; ARRAYS; CATALYST; HYDROGEN
Issue Date
201402
Publisher
HINDAWI PUBLISHING CORPORATION
Citation
JOURNAL OF NANOMATERIALS
Abstract
Monodisperse magnetic Fe3O4 nanoparticles (NPs) with the size of ca. 3.5 nm were prepared and used as the catalysts for the synthesis of vertically aligned carbon nanotube (VACNT) arrays. A silicalite-1 microcrystal monolayer was used as the support layer between catalyst NPs and the silicon substrate. Compared to our previous report which used radio-frequency-(rf-) sputtered Fe2O3 film as the catalyst, Fe3O4 NPs that were synthesized by wet chemical method showed an improved catalytic ability with less agglomeration. The silicalite-1 crystal monolayer acted as an effective "buffer" layer to prevent the catalyst NPs from agglomerating during the reaction process. It is believed that this is the first report that realizes the vertical alignment of CNTs over the zeolite monolayer, namely, silicalite-1 microcrystal monolayer, instead of using the intermediate anodic aluminum oxide (AAO) scaffold to regulate the growth direction of CNT products.
URI
http://hdl.handle.net/YU.REPOSITORY/33241http://dx.doi.org/10.1155/2014/327398
ISSN
1687-4110
Appears in Collections:
공과대학 > 신소재공학부 > Articles
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