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Synthesis of Metal Carbides Using Biological Templates

Published online by Cambridge University Press:  15 February 2011

Yongsoon Shin ,
Xiaohong S. Li ,
William D. Samuels ,
Yong Wang ,
Larry R. Pederson  and
Greg J. Exarhos
Yongsoon Shin
Affiliation:
Pacific Northwest National Laboratory, 902 Battelle Blvd, MS K2-44,Richland, WA 99354
Xiaohong S. Li
Affiliation:
Pacific Northwest National Laboratory, 902 Battelle Blvd, MS K2-44,Richland, WA 99354
William D. Samuels
Affiliation:
Pacific Northwest National Laboratory, 902 Battelle Blvd, MS K2-44,Richland, WA 99354
Yong Wang
Affiliation:
Pacific Northwest National Laboratory, 902 Battelle Blvd, MS K2-44,Richland, WA 99354
Larry R. Pederson
Affiliation:
Pacific Northwest National Laboratory, 902 Battelle Blvd, MS K2-44,Richland, WA 99354
Greg J. Exarhos
Affiliation:
Pacific Northwest National Laboratory, 902 Battelle Blvd, MS K2-44,Richland, WA 99354
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Abstract

Nanocrystalline metal carbides (MC: M=Si, Ti) have been prepared using cellulose network mineralized with silica and titania by carbothermal reduction at high temperature in Ar. Hierarchical biological structures indigenous to the cellulose precursor were completely replicated after the reaction. Cubic phase MC composites show relative low oxygen content 0.24 wt% and a high lattice parameter of 4.327Å in TiC. The particle sizes of the MC composites are 200-700nm for SiC and 10-50nm for TiC, and high BET surface area, up to 150m2/g.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 879: Symposium Z – Chemistry of Nanomaterial Synthesis and Processing , 2005 , Z10.25
Copyright
Copyright © Materials Research Society 2005

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