Department of Chemistry
Large-scale and controllable synthesis of metal-free carbon nanofibers and carbon nanotubes over water-soluble Na2CO3
Previously, various carbon nanomaterials (CNMs) have been synthesized by different methods. All these methods required the use of catalysts that were based on transition metals or their alloys, and there were scabrous problems related to CNM purification. Using acetylene as reactant and Na 2CO 3 powder as catalyst, carbon nanofibers (CNFs) and carbon nanotubes (CNTs) were selectively synthesized in this study at acetylene decomposition temperature of 450 and 500 °C, respectively. Because Na 2CO 3 is water-soluble, it can be removed from the products through simple washing with water and the nanocarbon materials can be harvested undamaged in high purity. The approach is simple, inexpensive, and environment-friendly; it can be adopted for controlled production of high-purity CNFs or CNTs. © 2012 Elsevier B.V. All rights reserved.
Carbon nanomaterials, Carbon nanotubes, Chemical vapor decomposition
Source Publication Title
Qi, Xiaosi, Qian Ding, Han Zhang, Wei Zhong, Chaktong Au, and Youwei Du. "Large-scale and controllable synthesis of metal-free carbon nanofibers and carbon nanotubes over water-soluble Na2CO3." Materials Letters 81 (2012): 135-137.