Title

Gas-Induced Formation of Cu Nanoparticle as Catalyst for High-Purity Straight and Helical Carbon Nanofibers

Authors

Authors

X. Jian; M. Jiang; Z. W. Zhou; Q. Zeng; J. Lu; D. C. Wang; J. T. Zhu; J. H. Gou; Y. Wang; D. Hui;M. L. Yang

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

ACS Nano

Keywords

carbon nanofibers; Cu nanocrystal; catalyst; gas-inducing method; helical; shape control; CHEMICAL-VAPOR-DEPOSITION; GROWTH-MECHANISM; ACETYLENE DECOMPOSITION; THERMAL-DECOMPOSITION; ABSORPTION PROPERTIES; MAGNETIC-PROPERTIES; METAL; NANOCRYSTALS; COPPER TARTRATE; NANOTUBES; NANOCOILS; Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &; Nanotechnology; Materials Science, Multidisciplinary

Abstract

The facile preparation of high-purity carbon nanofibers (CNFs) remains challenging due to the high complexity and low controllability in reaction. A novel approach using gas-induced formation of Cu crystals to control the growth of CNFs is developed in this study. By adjusting the atmospheric composition, controllable preparation of Cu nanoparticles (NPs) with specific size and shape is achieved, and they are further used as a catalyst for the growth of straight or helical CNFs with good selectivity and high yield. The preparation of Cu NPs and the formation of CNFs are completed by a one-step process. The inducing effect of N-2, Ar, H-2 and C2H2 on the formation of Cu NPs is systematically investigated through a combined experimental and computational approach. The morphology of CNFs obtained under different conditions is rationalized in terms of Cu NP and CNF growth models. The results suggest that the shapes of CNFs, namely, straight or helical, depend closely on the size, shape, and facet activity of Cu NPs, while such a gas-inducing method offers a simple way to control the formation of Cu NPs.

Journal Title

Acs Nano

Volume

6

Issue/Number

10

Publication Date

1-1-2012

Document Type

Article

DOI Link

http://dx.doi.org/10.1021/nn301880w

Language

English

First Page

8611

Last Page

8619

WOS Identifier

WOS:000310096100018

ISSN

1936-0851

Recommended Citation

"Gas-Induced Formation of Cu Nanoparticle as Catalyst for High-Purity Straight and Helical Carbon Nanofibers" (2012). Faculty Bibliography 2010s. 2801.
https://stars.library.ucf.edu/facultybib2010/2801