TY - JOUR
T1 - Controllable and large-scale synthesis of carbon nanofibers, bamboo-like nanotubes, and chains of nanospheres over Fe/SnO2 and their microwave-absorption properties
AU - Qi, Xiaosi
AU - Deng, Yu
AU - Zhong, Wei
AU - Yang, Yi
AU - Qin, Chuan
AU - AU, Chak Tong
AU - Du, Youwei
N1 - This work was supported by the National Natural Science Foundation of China (Grant no. 10674059), the National High Technology Research and Development Program of China (Grant no. 2007AA021805), and the National Key Project for Basic Research (Grants no. 2005CB623605 and 2010CB923402), People’s Republic of China.
PY - 2010/1/21
Y1 - 2010/1/21
N2 - Carbon nanofibers (CNFs), bamboo-like carbon nanotubes (CNTs), and chains of carbon nanospheres (CNSs) were produced selectively in large quantities in the pyrolysis of acetylene at 500, 600, and 700 °C, respectively, over Fe/SnO2 nanoparticles generated by means of a combined sol-gel and hydrogen-reduction method. One advantage of this approach is that there is no need of using a dilute gas such as argon or nitrogen. It is found that the pyrolysis temperature has considerable effect on the yield, morphology, and microwaveabsorption properties of the obtained materials. The corresponding yields of CNFs, bamboo-like CNTs, and chains of CNSs are high, up to 25595, 36791, and 37039%, respectively. Thus, a simple and environmentfriendly approach has been proposed for mass production of CNFs, bamboo-like CNTs, and chain of CNSs in a controllable manner. In addition, the as-prepared carbon materials are demonstrated to show good microwave-absorption properties. On the basis of the results, we propose a possible formation mechanism.
AB - Carbon nanofibers (CNFs), bamboo-like carbon nanotubes (CNTs), and chains of carbon nanospheres (CNSs) were produced selectively in large quantities in the pyrolysis of acetylene at 500, 600, and 700 °C, respectively, over Fe/SnO2 nanoparticles generated by means of a combined sol-gel and hydrogen-reduction method. One advantage of this approach is that there is no need of using a dilute gas such as argon or nitrogen. It is found that the pyrolysis temperature has considerable effect on the yield, morphology, and microwaveabsorption properties of the obtained materials. The corresponding yields of CNFs, bamboo-like CNTs, and chains of CNSs are high, up to 25595, 36791, and 37039%, respectively. Thus, a simple and environmentfriendly approach has been proposed for mass production of CNFs, bamboo-like CNTs, and chain of CNSs in a controllable manner. In addition, the as-prepared carbon materials are demonstrated to show good microwave-absorption properties. On the basis of the results, we propose a possible formation mechanism.
UR - http://www.scopus.com/inward/record.url?scp=75449094431&partnerID=8YFLogxK
U2 - 10.1021/jp9090393
DO - 10.1021/jp9090393
M3 - Journal article
AN - SCOPUS:75449094431
SN - 1932-7447
VL - 114
SP - 808
EP - 814
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 2
ER -