Single-walled carbon nanotubes synthesized by chemical vapor deposition of C2H2 over an Al2O3 supported mixture of Fe, Mo, Co catalysts
Tiếng Anh
Tóm tắt
Single-walled carbon nanotubes (SWCNTs) have been successfully synthesized by chemical
vapor deposition (CVD) using acetylene (C2H2) gas as a carbon source and a mixture of
Fe/Mo/Co on an Al2O3 support as a catalyst. The effects of the weight percentage (wt%) of
metals in the Fe/Mo/Co/Al2O3 catalysts, growth time, gas flow rate and growth temperature
on SWCNT growth were studied in detail. The optimum growth conditions were found to be a
growth time of 60 min, a growth temperature of 750 ◦C, Ar/H2/C2H2 flow rates of
420/100/14 sccm and a catalyst composition of Fe/Mo/Co/Al2O3 = 5/3/1/80 (wt%). The
morphologies and structures of the grown SWCNTs were characterized by scanning electron
microscopy (SEM), transmission electron microscopy (TEM) and Raman spectroscopy
techniques.
Tài liệu tham khảo
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[2] Ebbesen T W and Ajayan P M 1992 Nature 358 220
[3] Thess A et al 1996 Science 273 483
[4] Li W Z, Xie S S, Qian L X, Chang B H, Zou B S, Zhou W Y, Zhao R A and Wang G 1996 Science 274 1701
[5] Nguyen T A, Nguyen P T H, Dinh D H, Dang M C, Song W, Jung D, Kim S K and Park C 2010 Adv. Nat. Sci.: Nanosci. Nanotechnol. 1 015010
[6] Bethune D S, Kiang C H, Vries M S, Gorman G, Savoy R, Vazquez J and Beyers R 1993 Nature 363 605
[7] Guo T, Nikolaev P, Thess A, Colbert D T and Smalley R E 1995 Chem. Phys. Lett. 243 49
[8] Kibria A K M F, Mo Y H and Nahm K S 2001 Catal. Lett. 71 229
[9] Alvarez W E, Kitiyanan B, Borgna A and Resasco D E 2001 Carbon 39 547
[10] Kitiyanan B, Alvarez W E, Harwell J H and Resasco D E 2000 Chem. Phys. Lett. 317 497
[11] Herrera J E, Balzano L, Borgna A, Alvarez W E and Resasco D E 2001 J. Catal. 204 129
[12] Tang S, Zhong Z, Xiong Z, Sun L, Liu L, Lin J, Shen Z X and Tan K L 2001 Chem. Phys. Lett. 350 19
[13] Ning Y, Zhang X, Wang Y, Sun Y, Shen L, Yang X and Van Tendeloo G 2002 Chem. Phys. Lett. 366 555
[14] Colomer J F, Stephan C, Lefrant S, Tendeloo G V, Willems I, Konya Z, Fonseca A and Laurent Ch 2000 Chem. Phys. Lett. 317 83
[15] Hu P, Wang X, Liu Y, Wang B and Zhu D 2003 Synth. Met. 135 833
[16] Hafner J H, Bronikowski M J, Azamian B R, Nikolaev P, Rinzler A G, Colbert D T, Smith KA and Smalley R E 1998 Chem. Phys. Lett. 296 195
[17] Shajahan M, Mo Y H, Fazle Kibria A K M, Kim M J and Nahm K S 2004 Carbon 42 2245
[18] Dresselhaus M S, Dresselhaus G, Jorio A, Souza Filho A G and Saito R 2002 Carbon 40 2043