以脱油沥青(deoiled asphalt)为碳源,采用化学气相沉积法(CVD)制备碳微球,其裂解后的残渣经真空热处理制得单分散镍碳复合纳米球.用场发射扫描电镜(FESEM)、高分辨透射电镜(HRTEM)和X射线衍射仪(XRD)对产物进行表征.结果表明,碳微球高纯,属无定型碳结构,大小分布在1～2μm范围内;镍碳复合纳米球为准球形核壳结构,核为镍,壳为碳,尺寸在10～30nm范围,晶化程度较高,结构较完善.
参考文献
| [1] | Dravid V P;Host J J;Teng M H et al.[J].NATURE,1995,374(6523):602. |
| [2] | Subramoney S. .Novel nanocarbons - Structure, properties, and potential applications [Review][J].Advanced Materials,1998(15):1157-1171. |
| [3] | Jiao J.;Wang XK.;Withers JC.;Seraphin S. .PREPARATION AND PROPERTIES OF FERROMAGNETIC CARBON-COATED FE, CO, AND NI NANOPARTICLES[J].Journal of Applied Physics,1996(1):103-108. |
| [4] | Host JJ.;Parvin K.;Dravid VP.;Alpers JL.;Sezen T.;LaDuca R.;Block JA. .Effect of annealing on the structure and magnetic properties of graphite encapsulated nickel and cobalt nanocrystals[J].Journal of Applied Physics,1998(2):793-801. |
| [5] | Tomita S.;Fujii M.;Hayashi S.;Yamamoto K.;Hikita M. .A new and simple method for thin graphitic coating of magnetic-metal nanoparticles[J].Chemical Physics Letters,2000(5-6):361-364. |
| [6] | Yang G H;Wang R A .[J].Journal of Petroleum Science and Engineering,1999,22:47-52. |
| [7] | Zhao S Q;Xu Z M;Xu C M et al.[J].Journal of Petroleum Science and Engineering,2004,41:233-242. |
| [8] | Marsh H.;Martinez-Escandell M.;Rodriguez-Reinoso F. .Semicokes from pitch pyrolysis:mechanisms and kinetics[J].Carbon: An International Journal Sponsored by the American Carbon Society,1999(3):363-390. |
| [9] | Xu B S;Guo J J;Wang X M et al.[J].Carbon,2006,44:2631-2634. |
| [10] | 许并社,闫小琴,王晓敏,市野濑英喜,解思深.电弧放电中纳米洋葱状富勒烯生成机理的研究[J].材料热处理学报,2001(04):9-12. |
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%