The authors thank Amir Avishai for TEM and Alan K. McIlwain for XRD technical assistance and useful discussions. Supporting Information is available online from Wiley InterScience or from the author.
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Communication
Synergistic Effects in Bimetallic Nanoparticles for Low Temperature Carbon Nanotube Growth†
Article first published online: 16 DEC 2008
DOI: 10.1002/adma.200801006
Copyright © 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Additional Information
How to Cite
Chiang, W.-H. and Sankaran, R. M. (2008), Synergistic Effects in Bimetallic Nanoparticles for Low Temperature Carbon Nanotube Growth. Adv. Mater., 20: 4857–4861. doi: 10.1002/adma.200801006
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Publication History
- Issue published online: 16 DEC 2008
- Article first published online: 16 DEC 2008
- Manuscript Revised: 28 AUG 2008
- Manuscript Received: 11 APR 2008
Keywords:
- microplasma;
- metal nanoparticles;
- catalysts;
- carbon nanotubes;
- alloys
Dimensionally and compositionally tuned bimetallic nanoparticles are synthesized in an atmospheric pressure microplasma reactor and found to catalyze carbon nanotube (CNT) growth at lower temperatures and higher growth rates than monometallic nanoparticles. Kinetic studies show that the activation energy for CNT growth is lowered substantially with nanoparticle alloys, demonstrating that intrinsic catalytic activity is intimately related to chemical composition.