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Quantitative assessment of pores in oxidized carbon spheres using scanning tunneling microscopy

Published online by Cambridge University Press:  31 January 2011

V. Vignal ,
A. W. Morawski ,
H. Konno  and
M. Inagaki
V. Vignal
Affiliation:
Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan
A. W. Morawski
Affiliation:
Institute of Inorganic Chemical Technology, Technical University of Szczecin, ul. Pulaskiego 10, 70-322 Szczecin, Poland
H. Konno
Affiliation:
Graduate School of Engineering, Hokkaido University, Sapporo 060–8628, Japan
M. Inagaki
Affiliation:
Graduate School of Engineering, Hokkaido University, Sapporo 060–8628, Japan
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Abstract

Surface heterogeneity, particularly shape and size of pores on the surface of activated carbon spheres were studied by using scanning tunneling microscopy (STM) and field-emission type scanning electron microscopy (FE-SEM). Spheres were carbonized either in N2 or CO2 atmosphere and oxidized ones were used as samples. A new numerical method based on the determination of contour maps from STM images was proposed in order to determine the size distribution in micropores. These results were discussed with respect to the adsorption of gas and liquid molecules. A good correlation between Brunaner, Emmett, and Teller (BET) surface area determined from adsorption isotherms of N2 at 77 K and the number of pores with the size of 0.5–1.8 nm was observed, indicating that the proposed procedure to analyze the pore size distribution is effective.

Type
Articles
Information
Journal of Materials Research , Volume 14 , Issue 3 , March 1999 , pp. 1102 - 1112
Copyright
Copyright © Materials Research Society 1999

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References

REFERENCES

1.Reinoso, F. and Solano, A. L., Chemistry and Physics of Carbon, edited by Thrower, P. A. (Marcel Dekker, Inc., New York, 1988), Vol. 21.Google Scholar
2.Putyera, K., Jagiello, J., Bandosz, T. J., and Schwarz, J. A., Carbon 33, 1047–1052 (1995).CrossRefGoogle Scholar
3.Nakashima, M., Shimada, S., Inagaki, M., and Centeno, T. A., Carbon 39, 1301–1306 (1995).CrossRefGoogle Scholar
4.Gardner, M.A., North, A. N., and Dore, J.C., Surf. Sci. Catalysis 87, 273–281 (1994).CrossRefGoogle Scholar
5.Gierak, A., Mat. Chem. Phys. 41, 28–35 (1995).CrossRefGoogle Scholar
6.Douglas, D., Evrett, H., and Powl, J.C., J. Chem. Soc., Faraday Trans. I 72, 619–636 (1976).Google Scholar
7.Sing, K.S. W., Colloids Surf. 38, 113 (Edward Arnold, London, 1989).Google Scholar
8.Porosity in Carbons: Characterization and Applications, edited by Patrick, J. W. (Edward Arnold, London, 1995).Google Scholar
9.Donnet, J. B., Papirer, E., Wang, W., and Stoeckli, F., Carbon 32, 183–184 (1994).CrossRefGoogle Scholar
10.Donnet, J. B., Papirer, E., Wang, W., and Pusset, N., Water Supply 14, 271–280 (1996).Google Scholar
11.Stoeckli, F., Centeno, T. A., and Donnet, J.B., Fuel 74, 1582–1588 (1995).CrossRefGoogle Scholar
12.Hoffman, W.P., Fernandez, M.B., and Rao, M.B., Carbon 32, 1383–1384 (1994).CrossRefGoogle Scholar
13.Inagaki, M. and Nakashima, M., Carbon 30, 1135–1136 (1992).CrossRefGoogle Scholar
14.Inagaki, M. and Sunahara, M., Characterization of Porous Solids IV (Royal Soc. Chem., Cambridge, 1997), 156–162.Google Scholar
15.Inagaki, M. and Nakashima, M., Tanso 1994, 61–65 (1994).CrossRefGoogle Scholar
16.Inagaki, M. and Sunahara, M., Tanso 1998, 146–150 (1998).CrossRefGoogle Scholar
17.Morawski, A.W. and Inagaki, M., Desalination 114, 23–27 (1997).CrossRefGoogle Scholar