Synergistic Effects in Bimetallic Nanoparticles for Low Temperature Carbon Nanotube Growth

Authors

  • Wei-Hung Chiang,

    1. Department of Chemical Engineering Case Western Reserve University Cleveland, OH 44106-7217 (USA)
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  • R. Mohan Sankaran

    Corresponding author
    1. Department of Chemical Engineering Case Western Reserve University Cleveland, OH 44106-7217 (USA)
    • Department of Chemical Engineering Case Western Reserve University Cleveland, OH 44106-7217 (USA).
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  • 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.

Abstract

original image

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.

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