Cu/C核/壳纳米结构的气相合成、形成机理及其光学性能研究

黄小林; 侯丽珍; 喻博闻; 陈国良; 王世良; 马亮; 刘新利; 贺跃辉

doi:10.7498/aps.62.108102

摘要

采用乙酰丙酮铜为原料, 通过化学气相沉积大批量制备出Cu/C核/壳纳米颗粒和纳米线. 研究结果表明, 通过控制沉积温度可对Cu/C核/壳纳米材料的形貌和结构进行很好的控制. 比如, 沉积温度为400 ℃时可获得直径约200 nm的Cu/C核/壳纳米线, 沉积温度为450 ℃ 时可获得直径约200 nm的Cu/C核/壳纳米颗粒和纳米棒的混合产物, 沉积温度为600 ℃时可获得直径约22 nm的Cu/C核/壳纳米颗粒. 获得的Cu/C核/壳纳米结构是由一个新颖的凝聚机理形成的, 而这种机理不同于著名的溶解-析出机理. 紫外-可见光谱和荧光光谱分析结果表明: Cu/C核/壳纳米线和纳米颗粒均在225 nm处出现Cu的吸收峰, 同时在620 和616 nm处分别出现了纳米线和纳米颗粒的表面等离子共振吸收峰. Cu/C核/壳纳米线在312 和348 nm处、 Cu/C核/壳纳米颗粒在304 和345 nm处出现荧光发射谱峰.

关键词:

Abstract

Copper/carbon core/shell structure nanoparticles and nanowires are successfully synthesized by using a one-step low-temperature metal-organic chemical vapor with copper (II) acetylacetonate powders as precursor. Morphology and structure of copper/carbon core/shell nanomaterial can be well controlled by deposition temperature For instance, copper/carbon core/shell nanowires about 200 nm in diameter can be produced at 400 ℃. The mixture of nanowires and nanoparticles can be produced at 450 ℃. At 600 ℃ the production is the copper/carbon core/shell nanoparticles about 22 nm in diameter. The obtained copper/carbon core/shell nanostucture is found to be formed by a novel coalescence mechanism that is quite different from the well-known dissolution-precipitation mechanism The optical property of copper/carbon core/shell nanostructure is investigated Uv-vis spectrometer and the fluorescence spectrometer (PL). The results show that the surface plasma resonance peaks of copper/carbon core/shell nanowire and nanoparticle are located at 620 nm and 616 nm respectively. At 225 nm, copper absorbing peak can be found. The PL peaks of copper/carbon core/shell nanowires are located at 312 nm and 348 nm, and the PL peaks of copper/carbon core/shell nanoparticles are observed at 304 nm and 345 nm.

Keywords:

作者及机构信息

1.
中南大学物理与电子学院, 长沙 410083;

2.
湖南师范大学物理与信息学院, 长沙 410081;

3.
中南大学, 粉末冶金国家重点实验室, 长沙 410083

基金项目: 国家自然科学基金(批准号: 50804057, 51074188)、中南大学博士后基金和湖南省教育厅自然科学基金(批准号: 08C580)资助的课题.

Authors and contacts

1.
School of Physics and Electron, Central South University, Changsha 410083, China;

2.
Institute of Physics and Information Science, Hunan Normal University, Changsha 410081, China;

3.
State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China

Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 50804057, 51074188), the Central South University Postdoctoral Fundation and the Natural Science Foundation of Hunan Province, China (Grant No. 08C580).

参考文献

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施引文献

[1]	Lu L, Chen X, Huang X, Lu K 2009 Science 323 607
[2]	Zhang H L, Lei H L, Tang Y J, Luo J S, Li K, Deng X C 2010 Acta Phys. Sin. 59 471 (in Chinese) [张洪亮, 雷海乐, 唐永建, 罗江山, 李恺, 邓晓臣 2010 59 471]
[3]	Zhang G Y, Wang E G 2003 Appl. Phys. Lett. 82 1926
[4]	Wang G C, Yuan J M 2005 Acta Phys. Sin. 52 970 (in Chinese) [王贵春, 袁建民2005 52 970]
[5]	Rathmell A R, Wiley B J 2011 Adv. Mater. 23 4798
[6]	Huaman J L C, Sato K, Kurita S, Matsumoto T, Jeyadevan B 2011 J. Mat. Chem. 21 7062
[7]	Zhang B S, Xu B S, Xu Y, Gao F, Shi P J, Wu Y X 2011 Tribol. Int. 44 878
[8]	Wang S L, Huang X L, He Y H, Huang H, Wu Y Q, Hou L Z, Liu X L, Yang T M, Zou J Huang B Y 2012 Carbon 50 2119
[9]	Wang S L, He Y H, Liu X L, Huang H, Zou J, Song M, Huang B Y, Liu C T 2011 Nanotechnology 22 405704
[10]	Luechinger N A, Athanassiou E K, Stark W J 2008 Nanotechnology 19 445201
[11]	Xu W, Zhang Y, Guo Z, Chen X, Liu J, Huang X, Yu S H 2012 Small 8 53
[12]	Athanassiou E K, Grass R N, Stark W J 2006 Nanotechnology 17 1668
[13]	Yen M Y, Chiu C W, Hsia C H, Chen F R, Kai J J, Lee C Y, Chiu H T 2003 Adv. Mater. 15 235
[14]	Chen X H, Wu G T, Deng F M, Wang J X, Yang H S, Wang M, Lu X N, Peng J C, Li W Z 2001 Acta Phys. Sin. 50 1264 (in Chinese) [陈小华, 吴国涛, 邓福铭, 王健雄, 杨杭生, 王淼, 卢筱楠, 彭景翠, 李文铸2001 50 1264]
[15]	Zhang X F, Dong X L, Huang H, Wang D K, Lü B, Lei J 2007 Nanotechnology 18 275701
[16]	Li H, Kang W, Xi B, Yan Y, Bi H, Zhu Y, Qian Y 2010 Carbon 48 464
[17]	Schaper A K, Hou H, Greiner A, Schneider R, Phillipp F 2004 Appl. Phys. A: Mater. Sci. Process. 78 73
[18]	Vertoprakhov V N, Krupoder S A 2000 Russ. Chem. Rev. 69 1057
[19]	Li X, Cai W, An J, Kim S, Nah J, Yang D, Piner R, Velamakanni A, Jung I, Tutuc E 2009 Science 324 1312
[20]	Khatouri J, Mostafavi M, Amblard J, Belloni J 1992 Chem. Phys. Lett. 191 351
[21]	Lisiecki I, Pileni M P 1993 J. Am. Chem. Soc. 115 3887
[22]	Mulvaney P 1996 Langmuir 12 788
[23]	Siwach O P, Sen P 2008 J. Nanopart. Res. 10 107
[24]	O'connell M J, Bachilo S M, Huffman C B, Moore V C, Strano M S, Haroz E H, Rialon K L, Boul P J, Noon W H, Kittrell C 2002 Science 297 593
[25]	Huang T, Murray R W 2001 J. Phys. Chem. B 105 12498
[26]	Garuthara R, Siripala W 2006 J. Lumin. 121 173

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