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Synthesis of SWCNTs for C 82 peapods by arc‐discharge process using nonmagnetic catalysts
Author(s) -
Haluška Miro,
Hulman Martin,
Hornbostel Björn,
Čech Jiři,
Skákalová Viera,
Roth Siegmar
Publication year - 2006
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200669213
Subject(s) - catalysis , electric arc , raman spectroscopy , materials science , yield (engineering) , sulfur , metal , chemical engineering , characterization (materials science) , arc (geometry) , analytical chemistry (journal) , electrode , nanotechnology , metallurgy , chemistry , organic chemistry , optics , physics , geometry , mathematics , engineering
In the present work the way to grow SWCNTs, large enough to accommodate C 82 fullerenes, using nonmagnetic metal catalysts is demonstrated. The growth was carried out in a water‐cooled dc arc‐discharge Krätschmer generator with horizontally aligned electrodes. Different methods such as Raman and optical spectroscopy, TGA and TEM were used for characterization of the materials produced under various growth conditions. The concentration of sulphur promoter strongly influences the yield of SWNTs and affects their diameter distribution. The highest relative concentration of SWCNTs with diameters larger than 1.5 nm was found for an addition of 0.9–1.3 at% of sulphur to PtRh catalysts. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)