Optimization of the Ni−Y Catalyst Composition in Bulk Electric Arc Synthesis of Single-Walled Carbon Nanotubes by Use of Near-Infrared Spectroscopy
The Journal of Physical Chemistry B2004Vol. 108(34), pp. 12770–12775
Citations Over TimeTop 10% of 2004 papers
Mikhail E. Itkis, Daniel E. Perea, Sandip Niyogi, J. Love, Jihong Tang, Aiping Yu, Chuanzhi Kang, Rin Jung, Robert C. Haddon
Abstract
The influence of Ni−Y catalyst composition on the bulk scale synthesis of single-walled carbon nanotubes (SWNTs) is studied using solution phase near-infrared spectroscopy. We found that a wide range of catalyst concentrations (3−6 atom % Ni and 1−2 atom % Y), allow efficient production of high-purity as-prepared (AP-) SWNT soot. The broad window of acceptable synthetic parameters found in this study suggests that there is an opportunity to scale-up the electric arc (EA) discharge synthesis of SWNTs to the industrial level. Significant deviations of the concentrations of either Ni or Y outside the optimum parameters result in a degradation in the quality and yield of the AP-SWNT soot.
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