Functionalization of Carbon Nanotubes Using Nitric Acid Oxidation and DBD Plasma
作者： M. Vesali Naseh , F. Pourfayaz , Y. Mortazavi , O. Alizadeh Sahraei , S. Mosadegh Sedghi
DOI:
关键词: Carbon nanotube 、 Nitric acid 、 Amorphous carbon 、 Catalysis 、 Chemistry 、 Oxygen 、 Chemical engineering 、 Dielectric barrier discharge 、 Hydrochloric acid 、 Inorganic chemistry 、 Surface modification
摘要: In this study, multiwall carbon nanotubes (MWNTs) were modified with nitric acid chemically and by dielectric barrier discharge (DBD) plasma in an oxygen-based atmosphere. Used (CNTs) prepared chemical vapour deposition (CVD) floating catalyst method. For removing amorphous metal catalyst, MWNTs exposed to dry air washed hydrochloric acid. Heating purified CNTs under helium atmosphere caused elimination of acidic functional groups. Fourier transformed infrared spectroscopy (FTIR) shows formation oxygen containing groups such as C=O COOH. Brunauer, Emmett, Teller (BET) analysis revealed that functionalization causes generation defects on the sidewalls opening ends CNTs. Results temperature-programmed desorption (TPD) gas chromatography(GC) indicate treatment create more than treatment. Keywords—Carbon (CNTs), treatment, functionalization, plasma.
参考文章(18)
S. Banerjee, T. Hemraj-Benny, S. S. Wong, Covalent Surface Chemistry of Single‐Walled Carbon Nanotubes Advanced Materials. ,vol. 17, pp. 17- 29 ,(2005) , 10.1002/ADMA.200401340
Takashi Kyotani, Susumu Nakazaki, Wei-Hua Xu, Akira Tomita, Chemical modification of the inner walls of carbon nanotubes by HNO3 oxidation Carbon. ,vol. 39, pp. 782- 785 ,(2001) , 10.1016/S0008-6223(01)00013-6
Yan-Hui Li, Shuguang Wang, Zhaokun Luan, Jun Ding, Cailu Xu, Dehai Wu, Adsorption of cadmium(II) from aqueous solution by surface oxidized carbon nanotubes Carbon. ,vol. 41, pp. 1057- 1062 ,(2003) , 10.1016/S0008-6223(02)00440-2
R. Ionescu, E.H. Espinosa, E. Sotter, E. Llobet, X. Vilanova, X. Correig, A. Felten, C. Bittencourt, G. Van Lier, J.-C. Charlier, J.J. Pireaux, Oxygen functionalisation of MWNT and their use as gas sensitive thick-film layers Sensors and Actuators B-chemical. ,vol. 113, pp. 36- 46 ,(2006) , 10.1016/J.SNB.2005.02.020
M. Fleischer, H. Meixner, Selectivity in high-temperature operated semiconductor gas-sensors Sensors and Actuators B-chemical. ,vol. 52, pp. 179- 187 ,(1998) , 10.1016/S0925-4005(98)00271-8
Philippe Serp, Massimiliano Corrias, Philippe Kalck, Carbon nanotubes and nanofibers in catalysis Applied Catalysis A-general. ,vol. 253, pp. 337- 358 ,(2003) , 10.1016/S0926-860X(03)00549-0
Tao Xu, Jinghui Yang, Jiwei Liu, Qiang Fu, Surface modification of multi-walled carbon nanotubes by O2 plasma Applied Surface Science. ,vol. 253, pp. 8945- 8951 ,(2007) , 10.1016/J.APSUSC.2007.05.028
Sumio Iijima, Helical microtubules of graphitic carbon Nature. ,vol. 354, pp. 56- 58 ,(1991) , 10.1038/354056A0
P. Chingombe, B. Saha, R.J. Wakeman, Surface modification and characterisation of a coal-based activated carbon Carbon. ,vol. 43, pp. 3132- 3143 ,(2005) , 10.1016/J.CARBON.2005.06.021
H.P Boehm, Surface oxides on carbon and their analysis: a critical assessment Carbon. ,vol. 40, pp. 145- 149 ,(2002) , 10.1016/S0008-6223(01)00165-8