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Open Access Nano Express

Large-scale and controllable synthesis of metal-free nitrogen-doped carbon nanofibers and nanocoils over water-soluble Na2CO3

Qian Ding12, Xueyin Song12, Xiujuan Yao12, Xiaosi Qi123, Chak-Tong Au4, Wei Zhong12* and Youwei Du12

Author Affiliations

1 Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, People’s Republic of China

2 Jiangsu Provincial Laboratory for Nanotechnology, Nanjing University, Nanjing 210093, People’s Republic of China

3 College of Science, Guizhou University, Guiyang, 550025, People’s Republic of China

4 Chemistry Department, Hong Kong Baptist University, Hong Kong 852, People’s Republic of China

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Nanoscale Research Letters 2013, 8:545  doi:10.1186/1556-276X-8-545

Published: 27 December 2013

Abstract

Using acetylene as carbon source, ammonia as nitrogen source, and Na2CO3 powder as catalyst, we synthesized nitrogen-doped carbon nanofibers (N-CNFs) and carbon nanocoils (N-CNCs) selectively at 450°C and 500°C, respectively. The water-soluble Na2CO3 is removed through simple washing with water and the nitrogen-doped carbon nanomaterials can be collected in high purity. The approach is simple, inexpensive, and environment-benign; it can be used for controlled production of N-CNFs or N-CNCs. We report the role of catalyst, the effect of pyrolysis temperature, and the photoluminescence properties of the as-harvested N-CNFs and N-CNCs.

Keywords:
Carbon materials; Chemical vapor deposition; Water-soluble; Nitrogen-doped