Control of Fe catalyst nanoparticle density for carbon nanotube growth using Langmuir-Blodgett deposition of mixtures of Fe nanoparticles and arachidic acid
| Autor: | Ryuta Nara, Akihiro Takezawa, Masahito Kushida |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
chemistry.chemical_classification
Materials science Metals and Alloys Nanoparticle Nanotechnology Surfaces and Interfaces Polymer Carbon nanotube Electrolyte Langmuir–Blodgett film Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Catalysis chemistry.chemical_compound Chemical engineering chemistry law Monolayer Materials Chemistry Arachidic acid |
| Zdroj: | Thin Solid Films. 554:69-73 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/j.tsf.2013.06.076 |
| Popis: | Vertically-aligned carbon nanotubes (VA-CNTs) have been attracting attention as the electrode material of polymer electrolyte fuel cell. Fe nanoparticles (FeNPs) were used as catalyst for VA-CNT growth. FeNP monolayer film was deposited on substrates by Langmuir-Blodgett (LB) technique. VA-CNTs were synthesized from FeNP LB films by thermal chemical vapor deposition (CVD) method. Number density of VA-CNTs was lowered because of thermal aggregation of FeNPs during thermal CVD. We mixed FeNPs with arachidic acids (C20) as filler molecules, and synthesized VA-CNTs from FeNPs-C20 LB films, therefore we could reduce thermal aggregation and control the number density of FeNPs. |
| Databáze: | OpenAIRE |
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