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Morphology-Controlled Synthesis of Nanostructured Silicon Carbide

Published online by Cambridge University Press:  15 March 2011

Xiang-Yun Guo ,
Guo-Qiang Jin  and
Ya-Juan Hao
Xiang-Yun Guo
Affiliation:
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China Email: [email protected]
Guo-Qiang Jin
Affiliation:
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
Ya-Juan Hao
Affiliation:
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
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Abstract

Phenolic resin and tetraethoxysilane were used to prepare a binary carbonaceous silicon xerogel, the precursor of silicon carbide (SiC). By employing different additives in the sol-gel process, a series of xerogel precursors with differently chemical composition were obtained. Heating these xerogels to 1250°C, nanostructured β-SiC with various morphologies including nanowires, nanofibers, nanoparticles and mesoporous SiC were produced via carbothermal reduction. The preparation method of the xerogels was presented and the influences of different additives on the sol-gel process and the SiC formation were discussed in this paper.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 815 , 2004 , J5.3
Copyright
Copyright © Materials Research Society 2004

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