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Synergistic Effects in Bimetallic Nanoparticles for Low Temperature Carbon Nanotube Growth
Author(s) -
Chiang WeiHung,
Sankaran R. Mohan
Publication year - 2008
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200801006
Subject(s) - bimetallic strip , nanoparticle , carbon nanotube , materials science , catalysis , microplasma , nanotechnology , carbon fibers , activation energy , chemical engineering , chemistry , organic chemistry , composite material , metallurgy , engineering , metal , plasma , physics , quantum mechanics , composite number
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.