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Novel Silica-Sol Mediated Synthesis of Nanoporous Carbons

Published online by Cambridge University Press:  10 February 2011

Taeghwan Hyeon
Affiliation:
School of Chemical Engineering and Institute of Chemical Processes, Seoul National University, Seoul 151-742, Korea, e-mail: thyeon@plaza.snu.ac.kr
Sangjin Han
Affiliation:
School of Chemical Engineering and Institute of Chemical Processes, Seoul National University, Seoul 151-742, Korea, e-mail: thyeon@plaza.snu.ac.kr
Kwonnam Sohn
Affiliation:
School of Chemical Engineering and Institute of Chemical Processes, Seoul National University, Seoul 151-742, Korea, e-mail: thyeon@plaza.snu.ac.kr
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Abstract

New preparative methods for the synthesis of nanoporous carbons using silica particles as templates will be presented. Gellation of resorcinol and formaldehyde in the presence of silica sol particles generated RF gel-silica nanocomposite. Carbonization followed by HF etching of silica templates generated nanoporous carbons with pore size ranging 10 ∼ 100 nm. When silica particles stabilized with surfactant were used as templates, uniform ∼ 10 nm pore-sized carbons have been formed. These nanoporous carbons exhibited excellent adsorption capacity for dyes.

Type
Research Article
Copyright
Copyright © Materials Research Society 2000

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References

REFERENCES

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