Thermal CVD synthesis of carbon nanotubes filled with single-crystalline Cu nanoneedles at tips

被引：31

作者：

Tao, X. Y. ^{[1
]}

Zhang, X. B. ^{[1
]}

Cheng, J. P. ^{[1
]}

Luo, Z. Q. ^{[1
]}

Zhou, S. M. ^{[1
]}

Liu, F. ^{[1
]}

机构：

[1] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China

来源：

基金：

中国国家自然科学基金;

关键词：

carbon nanotube; chemical vapor deposition; transmission electron microscopy; catalyst;

D O I：

10.1016/j.diamond.2005.09.043

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Carbon nanotubes (CNTs) filled with Cu nanoneedles at tips have been synthesized using alkali-element doped Cu catalyst by a simple thermal chemical vapor deposition method. X-ray diffraction analysis reveals that Cu nanoneedles have perfect face-centered cubic structure. The carbon shells provide an effective barrier against oxidation and consequently ensure a long-term stability of the Cu core. Selected area electron diffraction indicates that these Cu nanoneedles are single crystalline with fine quality. Transmission electron microscopy and high-resolution transmission electron microscopy were employed to analyze the microstructure of Cu filled CNTs. On the basis of experimental results, a simple growth model is proposed in this paper. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：1271 / 1275

页数：5

共 38 条

[1] CAPILLARITY-INDUCED FILLING OF CARBON NANOTUBES [J].

AJAYAN, PM ;

IIJIMA, S .

NATURE, 1993, 361 (6410) :333-334

[2] GROWTH OF MANGANESE FILLED CARBON NANOFIBERS IN THE VAPOR-PHASE [J].

AJAYAN, PM ;

COLLIEX, C ;

LAMBERT, JM ;

BERNIER, P ;

BARBEDETTE, L ;

TENCE, M ;

STEPHAN, O .

PHYSICAL REVIEW LETTERS, 1994, 72 (11) :1722-1725

[3] CARBON NANOTUBES AS REMOVABLE TEMPLATES FOR METAL-OXIDE NANOCOMPOSITES AND NANOSTRUCTURES [J].

AJAYAN, PM ;

STEPHAN, O ;

REDLICH, P ;

COLLIEX, C .

NATURE, 1995, 375 (6532) :564-567

[4]

AMELINCKX S, 1994, SCIENCE, V265, P636

[5] Alkali promotion of Ni/MgO catalysts [J].

Arena, F ;

Frusteri, F ;

Parmaliana, A .

APPLIED CATALYSIS A-GENERAL, 1999, 187 (01) :127-140

[6] Influence of alkali coadsorption on hydrogen recombination at Cu(111) [J].

Burke, K ;

Hodgson, A .

SURFACE SCIENCE, 2004, 566 :186-191

[7] Metal-nanocluster-filled carbon nanotubes: Catalytic properties and possible applications in electrochemical energy storage and production [J].

Che, GL ;

Lakshmi, BB ;

Martin, CR ;

Fisher, ER .

LANGMUIR, 1999, 15 (03) :750-758

[8] Promotion of Cu/Cr/Mn catalyst by alkali additives in methanol decomposition [J].

Cheng, WH ;

Shiau, CY ;

Liu, TH ;

Tung, HL ;

Lu, JF ;

Hsu, CC .

APPLIED CATALYSIS A-GENERAL, 1998, 170 (02) :215-224

[9] Structures of ultrathin copper nanowires encapsulated in carbon nanotubes [J].

Choi, WY ;

Kang, JW ;

Hwang, HJ .

PHYSICAL REVIEW B, 2003, 68 (19)

[10] Interpretation of Raman spectra of disordered and amorphous carbon [J].

Ferrari, AC ;

Robertson, J .

PHYSICAL REVIEW B, 2000, 61 (20) :14095-14107

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