Title
Gas-Induced Formation Of Cu Nanoparticle As Catalyst For High-Purity Straight And Helical Carbon Nanofibers
Keywords
carbon nanofibers; catalyst; Cu nanocrystal; gas-inducing method; helical; shape control
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 C 2H 2 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. © 2012 American Chemical Society.
Publication Date
10-23-2012
Publication Title
ACS Nano
Volume
6
Issue
10
Number of Pages
8611-8619
Document Type
Article
Personal Identifier
scopus
DOI Link
https://doi.org/10.1021/nn301880w
Copyright Status
Unknown
Socpus ID
84867768495 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/84867768495
STARS Citation
Jian, Xian; Jiang, Man; Zhou, Zuowan; Zeng, Qun; and Lu, Jun, "Gas-Induced Formation Of Cu Nanoparticle As Catalyst For High-Purity Straight And Helical Carbon Nanofibers" (2012). Scopus Export 2010-2014. 4666.
https://stars.library.ucf.edu/scopus2010/4666