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论文类型：期刊论文

发表时间：2015-11-01

发表刊物：CARBON

收录刊物：EI、SCIE、ISTIC、Scopus

卷号：93

页面范围：361-369

ISSN号：0008-6223

摘要：Carbon nanocoils (CNCs) with selective coil diameters and structures have been synthesized by chemical vapor deposition using Sn/Fe binary catalyst films. CNCs, carbon nanofibers and irregular carbon nanowires could be selectively obtained by changing the thickness of the catalyst film. It is found that the coil diameters of CNCs gradually decrease with a decrease in the thickness of the catalyst films within a certain range, indicating that the coil diameters of CNCs can be effectively controlled by adjusting the thickness of Sn/Fe catalyst films. The morphology of the CNCs tends to change from spring-like to plait-like, and the graphitization degree of the CNC increases when their diameters are reduced. Our results provide important guidelines for the controlled synthesis of CNCs with selective coil diameters and selective structures by optimizing the catalyst film thickness. (C) 2015 Elsevier Ltd. All rights reserved.