以CO为碳源,通过氧炔焰形成热解火焰合成了碳纳米管.为了详细研究催化剂与合成环境对合成产物的影响,实验分别应用不同催化剂在不同合成环境中进行取样分析.结果表明:催化剂颗粒尺寸直接决定合成产物的种类,不同产物对合成温度也有不同要求,过高温火焰环境会遏制碳纳米管的合成.最终得出,Fe/Mo/Al2O3载体催化剂适合在热解腔内部830℃无氧的环境下催化合成小直径的单壁、双壁和三壁碳纳米管,而由Fe(CO)5热解-附着-聚合产生的Fe催化剂颗粒适合在600℃的V型体火焰中催化合成大直径多壁碳纳米管.
参考文献
| [1] | Iijima S .Helical Microtubes of Graphite Carbon[J].Nature,1991,354:56-58. |
| [2] | Lee YH;Yoo JM;Lee JA;Ahn SY;Joo J;Lee S;Kim DH;Ju BK;Song KJ .Integration of carbon nanotubes into diluted magnetic semiconductor[J].Applied physics letters,2005(12):1915-1-1915-3-0. |
| [3] | Li Shi;Jianhua Zhou;Philip Kim;Adrian Bachtold;Arun Majumdar;Paul L. McEuen .Thermal probing of energy dissipation in current-carrying carbon nanotubes[J].Journal of Applied Physics,2009(10):104306.1-104306.5. |
| [4] | 杜招红,曾效舒.碳纳米管聚合物复合膜的等离子刻蚀研究[J].人工晶体学报,2008(05):1233-1236. |
| [5] | Iijima S;Ajayan P M;Ichihashi T et al.Growth Model for Carbon Nanotubes[J].Physical Review Letters,1992,69(21):3100-3103. |
| [6] | Yudasaka M.;Ichihashi T.;Iijima S.;Komatsu T. .SINGLE-WALL CARBON NANOTUBE FORMATION BY LASER ABLATION USING DOUBLE-TARGETS OF CARBON AND METAL[J].Chemical Physics Letters,1997(1/3):102-106. |
| [7] | Su Ming .A scalable CVD method for the synthesis of single-walled carbon nanotubes with high catalyst productivity[J].Chemical Physics Letters,2000(5):321-326. |
| [8] | Michael D. Diener;Noah Nichelson;John M. Alford .Synthesis of Single-Walled Carbon Nanotubes in Flames[J].The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical,2000(41):9615-9620. |
| [9] | 刘远超,孙保民,赵惠富,丁兆勇,贾斌.V型热解火焰合成碳纳米管的影响因素研究与分析[J].人工晶体学报,2009(06):1506-1510. |
| [10] | Vander Wal Randall L. .Flame synthesis of substrate-supported metal-catalyzed carbon nanotubes[J].Chemical Physics Letters,2000(1/3):217-223. |
| [11] | M.J. Height;J.B. Howard;J.W. Tester .Flame synthesis of single-walled carbon nanotubes[J].Carbon,2004(11):2295-2307. |
| [12] | Randall L;Vander W;Lee J H .Flame Synthesis of Fe Catalyzed Single-walled Carbon Nanotubes and Ni Catalyzed Nanofibers:Growth Mechanisms and Consequences[J].Chemical Physics Letters,2001,349:178-184. |
| [13] | Emmanuel Lamouroux;Philippe Serp;Yolande Kihn;Philippe Kalck .Identification of key parameters for the selective growth of single or double wall carbon nanotubes on FeMo/Al2O3 CVD catalysts[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2007(0):162-173. |
| [14] | Dal HJ.;Nikolaev P.;Thess A.;Colbert DT.;Smalley RE.;Rinzler AG. .SINGLE-WALL NANOTUBES PRODUCED BY METAL-CATALYZED DISPROPORTIONATION OF CARBON MONOXIDE[J].Chemical Physics Letters,1996(3-4):471-475. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%