以乙炔(C2H2)为碳源,N2为载气,二茂铁为催化前驱物,采用浮动催化法,在碳纤维衬底上制备了垂直定向的碳纳米片阵列.利用SEM,EDX和Raman光谱对所得产物进行了表征.结果表明经十二烷基磺酸钠(SDS)和二茂铁的丙酮溶液煮沸和浸泡处理后的碳纤维表面所生长的碳纳米片长度约为600 nm,宽度约为50 nm.Raman光谱分析表明所制备的碳纳米片为石墨结构.碳纤维的预处理不仅活化了表面,而且避免了催化剂向其内部的渗透和吸收.基于以上结果,碳纤维/碳纳米片在场发射领域很可能有重要的应用.
参考文献
| [1] | Bonard J M;Croci M;Klinke C et al.Carbon nanotubes films as electron field emitters[J].Carbon,2002,40:1715-1728. |
| [2] | Jiayu Wang;Toshimichi Ito .CVD growth and field emission characteristics of nano-structured films composed of vertically standing and mutually intersecting nano-carbon sheets[J].Diamond and Related Materials,2007(3):589-593. |
| [3] | Mingyao Zhu;Jianjun Wang;Ronald A. Outlaw;Kun Hou;Dennis M. Manos;Brian C. Holloway .Synthesis of carbon nanosheets and carbon nanotubes by radio frequency plasma enhanced chemical vapor deposition[J].Diamond and Related Materials,2007(2):196-201. |
| [4] | Li QY;Zhang X;Wu GZ;Xu S;Wu CF .Sonochemical preparation of carbon nanosheet from carbon black[J].Ultrasonics sonochemistry,2007(2):225-228. |
| [5] | French BL;Wang JJ;Zhu MY;Holloway BC .Evolution of structure and morphology during plasma-enhanced chemical vapor deposition of carbon nanosheets[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,2006(1/2):105-109. |
| [6] | Wang JJ;Zhu MY;Outlaw RA;Zhao X;Manos DM;Holloway BC .Synthesis of carbon nanosheets by inductively coupled radio-frequency plasma enhanced chemical vapor deposition[J].Carbon: An International Journal Sponsored by the American Carbon Society,2004(14):2867-2872. |
| [7] | Weiser PS;Praoer S;Hoffman A et al.Carbon diffusion in uncoated and titanium nitride coated iron substrates during microwave plasma assisted chemical vapor deposition of diamond[J].Journal of Applied Physics,1992,72:4643-4647. |
| [8] | Zhu S.;White HW.;Shahedipour F. .Low-temperature synthesis of diamond-like carbon films on steel substrates by electron-cyclotron-resonance plasma-enhanced chemical vapor deposition[J].Journal of the American Ceramic Society,1998(4):1041-1044. |
| [9] | Zhu S;Su C H;Lehoczky SL et al.Carbon nanotubes growth on carbon fibers[J].Diamond and Related Materials,2003,34(12):1825-1828. |
| [10] | Zhi-Gang Zhao;Li-Jie Ci;Hui-Ming Cheng .The growth of multi-walled carbon nanotubes with different morphologies on carbon fibers[J].Carbon: An International Journal Sponsored by the American Carbon Society,2005(3):663-665. |
| [11] | Nozomu Sonoyama;Mikio Ohshita;Akio Nijubu .Synthesis of carbon nanotubes on carbon fibers by means of two-step thermochemical vapor deposition[J].Carbon: An International Journal Sponsored by the American Carbon Society,2006(9):1754-1761. |
| [12] | Li WZ.;Yang SX.;Wen JG.;Ren ZF.;Wang DZ. .Controlled growth of carbon nanotubes on graphite foil by chemical vapor deposition[J].Chemical Physics Letters,2001(3-4):141-149. |
| [13] | Reznik D;Olk C H;Neumann D A et al.X -ray powder diffraction from carbon nanotubes and nanoparticles[J].Physical Review B,1995,52:116-124. |
| [14] | Shanmugam S;Gedanken A .Generation of hydrophilie,bamboo-shaped multiwalled carbon nanotubes by solid-state pyrolysis and its electrochemical studies[J].Journal of Physical Chemistry B,2006,110:2037-2044. |
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%