Nano-Micro Letters

Growth of Carbon Nanocoils by Porous α-Fe2O3/SnO2 Catalyst and Its Buckypaper for High Efficient Adsorption

Yongpeng Zhao1, 2, Jianzhen Wang1, Hui Huang1, Tianze Cong1, Shuaitao Yang1, Huan Chen2, Jiaqi Qin3, Muhammad Usman1, Zeng Fan1 , Lujun Pan1, *

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Nano-Micro Lett. (2020) 12: 23

First Online: 16 January 2020 (Article)

DOI:10.1007/s40820-019-0365-y

*Corresponding author. E-mail: lpan@dlut.edu.cn (L. Pan)

 

Abstract

 


Toc

High-purity carbon nanocoils (CNCs) have been synthesized by catalytic chemical vapor deposition (CVD) using porous α-Fe2O3/SnO2 nanocomposites catalyst prepared by a one-pot solvothermal method. The as-grown CNCs are spring-like, having a high purity of nearly 99% and almost no amorphous carbon layer on substrate. Furthermore, the density of the high-purity CNCs are easily controlled by changing the density of the catalysts aggregate using a simple spin-coating process. The yield of CNCs reaches 9,098% after a 6 h growth, much higher than the previously reported data. In particular, nearly 150 cm2 area of high purity CNCs can be obtained after a CVD reaction in a quartz tube with inner diameter of 30 mm, indicating that this method is promising to synthesize high-purity CNCs on a large scale. It is considered that an appropriate proportion of Fe and Sn, proper particle size distribution and a loose-porous aggregate structure of the catalyst are the key points to the high-purity growth of CNCs. Benefit from the high purity and large-scale preparation, a CNC buckypaper has been successfully prepared. This study provides a facile and economical route for preparing CNCs with high purity and large-scale production to boost their practical applications.


 

Keywords

Carbon nanocoils; High purity; Large-scale production; Porous catalysts; CNC buckypaper

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