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NCUEIR > College of Science > Department of Physics > Periodical Articles > Item 987654321/14183

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/14183

Title:	Transport Properties of Spiral Carbon Nanofiber Mats Containing Pd Metal Clusters Using Pd2(dba)3 as Catalyst
Authors:	Liu, Chia-Jyi;Wu, T. W.;Hsu, L. S.;Su, C. J.;Wang, C. C.;Shieu, F. S.
Contributors:	物理學系
Keywords:	A. Carbon fibers;B. Catalyst support;C. Transmission electron microscopy;D. Transport properties
Date:	2004
Issue Date:	2012-09-10T06:14:08Z
Publisher:	Elsevier
Abstract:	We have grown spiral carbon nanofibers containing Pd metal clusters using the Pd2(dba)3 catalyzed decomposition of gaseous acetylene on molecular sieves (AlPO4-5) support. The microstructure and composition of the spiral carbon nanofibers were examined by the powder X-ray diffractometer and transmission electron microscope. The conductivity of the mat in the temperature range from 14 to 250 K could be described by the form of exp[−(T−1/4)]. The thermopower shows a remarkably linear behavior down to 40 K, reminiscent of some conducting polymers. The sign change of the thermopower suggests there exists more than one type of charge carrier, which could be ascribed to the different types of nanotube with various sizes of radius. The transport behavior of spiral carbon nanofibers containing Pd metal clusters will be discussed in the framework of the heterogeneous model.
Relation:	Carbon, 42(12-13): 2635-2640
Appears in Collections:	[Department of Physics] Periodical Articles

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