News Reader.info

ABSTRACT SEVERAL techniques have been developed recently for fabricating nanocomposite structures by filling1–3 carbon nanotubes4,5. Here we show that surface-tension effects can induce the

growth of uniform, thin metal oxide filmsá€"sometimes only a monolayer thická€"on the outside of nanotubes, along with oxide fillings in the internal cavities and thin oxide layers

between the concentric shells of the tubes. We report the preparation of such nanotube–oxide composites by annealing a mixture of partially oxidized nanotubes and V2O5 powder in air above

the melting point of the oxide. The external coatings of the tubes are crystalline sheets of the V2O5 layer-like structure, which grow with the c axis parallel to that of the nanotube

layers. Intercalation of the oxide occurs where there are missing shells in the nanotubes. We also show that the nanotubes can be partially removed by oxidation, leaving behind layered oxide

fibres. Given the importance of vanadium oxides as catalysts and functional ceramics, this role of nanotubes as removable templates might lead to useful new kinds of nanostructured

materials. Access through your institution Buy or subscribe This is a preview of subscription content, access via your institution ACCESS OPTIONS Access through your institution Subscribe to

this journal Receive 51 print issues and online access $199.00 per year only $3.90 per issue Learn more Buy this article * Purchase on SpringerLink * Instant access to full article PDF Buy

now Prices may be subject to local taxes which are calculated during checkout ADDITIONAL ACCESS OPTIONS: * Log in * Learn about institutional subscriptions * Read our FAQs * Contact customer

support SIMILAR CONTENT BEING VIEWED BY OTHERS ZNO NUCLEATION INTO TRITITANATE NANOTUBES BY ALD EQUIPMENT TECHNIQUES, A NEW WAY TO FUNCTIONALIZE LAYERED METAL OXIDES Article Open access 08

April 2021 ENHANCED MECHANICAL AND WEAR PROPERTIES OF AL6061 ALLOY NANOCOMPOSITE REINFORCED BY CNT-TEMPLATE-GROWN CORE–SHELL CNT/SIC NANOTUBES Article Open access 30 July 2020 POROUS

COVALENT ORGANIC NANOTUBES AND THEIR ASSEMBLY IN LOOPS AND TOROIDS Article 14 March 2022 REFERENCES * Ajayan, P. M. & Iijima, S. _Nature_ 361, 333–334 (1993). Article  ADS  CAS  Google

Scholar  * Tsang, S. C., Chen, Y. K., Harris, P. J. F. & Green, M. L. H. _Nature_ 372, 159–162 (1994). Article  ADS  CAS  Google Scholar  * Guerret-Plécourt, C., Le Bouar, Y., Loiseau,

A. & Pascard, H. _Nature_ 372, 761–765 (1994). Article  ADS  Google Scholar  * Iijima, S. _Nature_ 354, 56–58 (1991). Article  ADS  CAS  Google Scholar  * Ebbesen, T. W. & Ajayan, P.

M. _Nature_ 358, 220–222 (1992). Article  ADS  CAS  Google Scholar  * Ajayan, P. M. _et al._ _Nature_ 362, 522–525 (1993). Article  ADS  CAS  Google Scholar  * Prasad, R. & Lele, S.

_Phil. Mag. Lett._ 70, 357–361 (1994). Article  ADS  CAS  Google Scholar  * Dujardin, E., Ebbesen, T. W., Hiura, H. & Tanigaki, K. _Science_ 265, 1850–1852 (1994). Article  ADS  CAS 

Google Scholar  * Ikemiya, N., Umemoto, J., Hara, S. & Ogino, K. _ISU Int._ 33, 156–165 (1993). Article  CAS  Google Scholar  * Amelinckx, S. _et al._ _Science_ 267, 1334–1338 (1995).

Article  ADS  CAS  Google Scholar  * Galy, J. _J. Solid St. Chem._ 100, 229–245 (1992). Article  ADS  CAS  Google Scholar  * Cava, R. J. _et al._ _J. Solid St. Chem._ 65, 63–71 (1986).

Article  ADS  CAS  Google Scholar  * Oshio, T., Sakai, Y. & Ehara, S. _J. Vac. Sci. Technol._ B12, 2055–2059 (1994). Article  Google Scholar  * Smith, R. L., Lu, W. & Rohrer, S.

_Surf. Sci._ 322, 293–300 (1995). Article  ADS  CAS  Google Scholar  * Cullen, S. L., Boothroyd, C. B. & Humphreys, C. J. _Ultramicroscopy_ 56, 127–134 (1994). Article  CAS  Google

Scholar  * Ajayan, P. M. _et al._ _Phys. Rev. Lett._ 72, 1722–1725 (1994). Article  ADS  CAS  Google Scholar  * Lin, X. W. _et al._ _Phys. Rev._ B47, 3477–3481 (1993). Article  CAS  Google

Scholar  * Smith, D. J., McCartney, M. R. & Bursill, L. A. _Ultramicroscopy_ 23, 299–304 (1987). Article  CAS  Google Scholar  * Fan, H. J. & Marks, L. D. _Ultramicroscopy_ 31,

357–364 (1989). Article  CAS  Google Scholar  * Zasadzinski, J. A. _et al._ _Science_ 263, 1726–1733 (1994). Article  ADS  CAS  Google Scholar  * Ohuchi, F. S., Parkinson, B. A., Ueno, K.

& Koma, A. _J. appl. Phys._ 68, 2168–2175 (1990). Article  ADS  CAS  Google Scholar  * Gai, P. L. & Kourtakis, K. _Science_ 267, 661–664 (1994). Article  ADS  Google Scholar  *

Dresselhaus, M. S. _et al._ _Graphite Fibers and Filaments_ (ed. Cardona, M.) 238–243 (Springer, Berlin, 1988). Book  Google Scholar  * Krylov, O. V. _Catalysis by Nonmetals_ (ed. Loebel, E.

M.) (Academic, New York, 1970). Google Scholar  * Scarminio, J. _et al._ _Electrochim. Acta_ 38, 1637–1642 (1993). Article  CAS  Google Scholar  * Kim, D. H. & Kwok, H. S. _Appl. Phys.

Lett._ 65, 3189–3191 (1994). ADS  Google Scholar  * Shimizu, Y., Nagase, K., Miura, N. & Yamazoe, N. _Jap. J. appl. Phys._ 29, L1708–L1711 (1990). Article  ADS  CAS  Google Scholar 

Download references AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Laboratoire de Physique des Solides associé en CNRS, Université Paris-Sud, Bâtiment 510, 91405, Orsay, France P. M. Ajayan, 

O. Stephan, Ph. Redlich & C. Colliex * Max-Planck-lnstitut für Metallforschung, Institut für Werkstoffwissenschaft, Seestrasse 92, D-70174, Stuttgart, Germany Ph. Redlich Authors * P. M.

Ajayan View author publications You can also search for this author inPubMed Google Scholar * O. Stephan View author publications You can also search for this author inPubMed Google Scholar

* Ph. Redlich View author publications You can also search for this author inPubMed Google Scholar * C. Colliex View author publications You can also search for this author inPubMed Google

Scholar RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE Ajayan, P., Stephan, O., Redlich, P. _et al._ Carbon nanotubes as removable templates for metal

oxide nanocomposites and nanostructures. _Nature_ 375, 564–567 (1995). https://doi.org/10.1038/375564a0 Download citation * Received: 20 April 1995 * Accepted: 22 May 1995 * Issue Date: 15

June 1995 * DOI: https://doi.org/10.1038/375564a0 SHARE THIS ARTICLE Anyone you share the following link with will be able to read this content: Get shareable link Sorry, a shareable link is

not currently available for this article. Copy to clipboard Provided by the Springer Nature SharedIt content-sharing initiative