Modification of SiO₂ Nanowires with Metallic Nanocrystals from Supercritical CO₂

Authors: Xiang-Rong Ye; Hai-Feng Zhang; Yuehe Lin; Lai-Sheng Wang; Chien M. Wai

Source: Journal of Nanoscience and Nanotechnology, Volume 4, Numbers 1-2, January 2004 , pp. 82-85(4)

Publisher: American Scientific Publishers

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Abstract:

Through hydrogen reduction of metal precursors in supercritical CO₂, Cu, and Pd, nanocrystals were deposited onto SiO₂ nanowires to form different types of nanostructured materials, including nanocrystal-nanowire, spherical aggregation-nanowire, shell-nanowire composites, and "mesoporous" metals supported by the framework of nanowires. This supercritical fluid deposition technique is an attractive approach for modifying nanowires because of its generality and simplicity; the modified nanowires could be useful as catalysts and for further fabrication of multifunctional composites.

Keywords: SIO2 NANOWIRES; METALLIC NANOCRYSTALS; SUPERCRITICAL FLUID DEPOSITION; CARBON NANOTUBES; NANOCRYSTALS; CATALYSTS

Document Type: Short communication

DOI: http://dx.doi.org/10.1166/jnn.2004.042

Publication date: 2004-01-01

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Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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