TY - JOUR
T1 - Large-scale and controllable synthesis of metal-free carbon nanofibers and carbon nanotubes over water-soluble Na 2CO 3
AU - Qi, Xiaosi
AU - Ding, Qian
AU - Zhang, Han
AU - Zhong, Wei
AU - Au, Chaktong
AU - Du, Youwei
N1 - Funding Information:
We would like to thank the Doctorial Start-up Fund of Guizhou University , the international cooperation project of Guizhou Province ( 2012-7002 ) and the Foundation of the National Natural Science Foundation of China (grant no. 11174132 ), the National Key Project for Basic Research (grant nos. 2010CB923402 and 2012CB932304 ), the National Laboratory of Solid State Microstructures, Nanjing University (grant no. 2010ZZ18 ) and the PAPD, People's Republic of China , for financial support.
PY - 2012/8/15
Y1 - 2012/8/15
N2 - 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.
AB - 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.
KW - Carbon nanomaterials
KW - Carbon nanotubes
KW - Chemical vapor decomposition
UR - http://www.scopus.com/inward/record.url?scp=84862180941&partnerID=8YFLogxK
U2 - 10.1016/j.matlet.2012.04.106
DO - 10.1016/j.matlet.2012.04.106
M3 - Journal article
AN - SCOPUS:84862180941
SN - 0167-577X
VL - 81
SP - 135
EP - 137
JO - Materials Letters
JF - Materials Letters
ER -