Fabrication of silicon-based ceramic synthesized from mesoporous carbon-silica nanocomposites

Kun Wang, Yi Bing Cheng, Huanting Wang

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

Abstract

Mesoporous carbon-silica (C-SiO2) nanocomposites with different C/SiO2 molar ratios were used as precursor for fabricating silicon-based ceramics. Different silicon carbide nanostructures were synthesized by carbothermal reduction of mesoporous C-SiO2 nanocomposites via different heat treatments under argon. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and nitrogen adsorption-desorption analysis were used to characterize C-SiO2 nanocomposites and SiC products. The major morphologies formed from the mesoporous C-SiO2 nanocomposites were nanoparticles and nanofibers. With higher quantity of P123, which is the surfactant for the mesopores, the BET surface area and pore volume increased, inducing a decrease of nanofibers. The mesoporous precursors were also heated at 1200 °C for 15 hours to make a nearly dense structure and then heated to the final temperature. The products were almost nanoparticles which had a larger size than those heated directly to 1450 °C. Therefore carbothermal reduction of mesoporous C-SiO2 precursors appears to be an effective means of accelerating the reaction and controlling SiC nanostructures.

Original languageEnglish
Title of host publicationProcessing of Nanoparticle Structures and Composites - A Collection of Papers Presented at the 2008 Materials Science and Technology conference, MS and T08
Pages71-78
Number of pages8
Volume208
Publication statusPublished - 2009
EventProcessing of Nanoparticle Structures and Composites - 2008 Materials Science and Technology conference, MS and T08 - Pittsburgh, PA, United States
Duration: 5 Oct 20089 Oct 2008

Publication series

NameCeramic Transactions
Volume208
ISSN (Print)10421122

Conference

ConferenceProcessing of Nanoparticle Structures and Composites - 2008 Materials Science and Technology conference, MS and T08
CountryUnited States
CityPittsburgh, PA
Period5/10/089/10/08

Cite this

Wang, K., Cheng, Y. B., & Wang, H. (2009). Fabrication of silicon-based ceramic synthesized from mesoporous carbon-silica nanocomposites. In Processing of Nanoparticle Structures and Composites - A Collection of Papers Presented at the 2008 Materials Science and Technology conference, MS and T08 (Vol. 208, pp. 71-78). (Ceramic Transactions; Vol. 208).
Wang, Kun ; Cheng, Yi Bing ; Wang, Huanting. / Fabrication of silicon-based ceramic synthesized from mesoporous carbon-silica nanocomposites. Processing of Nanoparticle Structures and Composites - A Collection of Papers Presented at the 2008 Materials Science and Technology conference, MS and T08. Vol. 208 2009. pp. 71-78 (Ceramic Transactions).
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abstract = "Mesoporous carbon-silica (C-SiO2) nanocomposites with different C/SiO2 molar ratios were used as precursor for fabricating silicon-based ceramics. Different silicon carbide nanostructures were synthesized by carbothermal reduction of mesoporous C-SiO2 nanocomposites via different heat treatments under argon. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and nitrogen adsorption-desorption analysis were used to characterize C-SiO2 nanocomposites and SiC products. The major morphologies formed from the mesoporous C-SiO2 nanocomposites were nanoparticles and nanofibers. With higher quantity of P123, which is the surfactant for the mesopores, the BET surface area and pore volume increased, inducing a decrease of nanofibers. The mesoporous precursors were also heated at 1200 °C for 15 hours to make a nearly dense structure and then heated to the final temperature. The products were almost nanoparticles which had a larger size than those heated directly to 1450 °C. Therefore carbothermal reduction of mesoporous C-SiO2 precursors appears to be an effective means of accelerating the reaction and controlling SiC nanostructures.",
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Wang, K, Cheng, YB & Wang, H 2009, Fabrication of silicon-based ceramic synthesized from mesoporous carbon-silica nanocomposites. in Processing of Nanoparticle Structures and Composites - A Collection of Papers Presented at the 2008 Materials Science and Technology conference, MS and T08. vol. 208, Ceramic Transactions, vol. 208, pp. 71-78, Processing of Nanoparticle Structures and Composites - 2008 Materials Science and Technology conference, MS and T08, Pittsburgh, PA, United States, 5/10/08.

Fabrication of silicon-based ceramic synthesized from mesoporous carbon-silica nanocomposites. / Wang, Kun; Cheng, Yi Bing; Wang, Huanting.

Processing of Nanoparticle Structures and Composites - A Collection of Papers Presented at the 2008 Materials Science and Technology conference, MS and T08. Vol. 208 2009. p. 71-78 (Ceramic Transactions; Vol. 208).

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

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N2 - Mesoporous carbon-silica (C-SiO2) nanocomposites with different C/SiO2 molar ratios were used as precursor for fabricating silicon-based ceramics. Different silicon carbide nanostructures were synthesized by carbothermal reduction of mesoporous C-SiO2 nanocomposites via different heat treatments under argon. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and nitrogen adsorption-desorption analysis were used to characterize C-SiO2 nanocomposites and SiC products. The major morphologies formed from the mesoporous C-SiO2 nanocomposites were nanoparticles and nanofibers. With higher quantity of P123, which is the surfactant for the mesopores, the BET surface area and pore volume increased, inducing a decrease of nanofibers. The mesoporous precursors were also heated at 1200 °C for 15 hours to make a nearly dense structure and then heated to the final temperature. The products were almost nanoparticles which had a larger size than those heated directly to 1450 °C. Therefore carbothermal reduction of mesoporous C-SiO2 precursors appears to be an effective means of accelerating the reaction and controlling SiC nanostructures.

AB - Mesoporous carbon-silica (C-SiO2) nanocomposites with different C/SiO2 molar ratios were used as precursor for fabricating silicon-based ceramics. Different silicon carbide nanostructures were synthesized by carbothermal reduction of mesoporous C-SiO2 nanocomposites via different heat treatments under argon. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and nitrogen adsorption-desorption analysis were used to characterize C-SiO2 nanocomposites and SiC products. The major morphologies formed from the mesoporous C-SiO2 nanocomposites were nanoparticles and nanofibers. With higher quantity of P123, which is the surfactant for the mesopores, the BET surface area and pore volume increased, inducing a decrease of nanofibers. The mesoporous precursors were also heated at 1200 °C for 15 hours to make a nearly dense structure and then heated to the final temperature. The products were almost nanoparticles which had a larger size than those heated directly to 1450 °C. Therefore carbothermal reduction of mesoporous C-SiO2 precursors appears to be an effective means of accelerating the reaction and controlling SiC nanostructures.

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Wang K, Cheng YB, Wang H. Fabrication of silicon-based ceramic synthesized from mesoporous carbon-silica nanocomposites. In Processing of Nanoparticle Structures and Composites - A Collection of Papers Presented at the 2008 Materials Science and Technology conference, MS and T08. Vol. 208. 2009. p. 71-78. (Ceramic Transactions).