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Optical Absorption of Copper Nanoparticles Dispersed within Pores of Monolithic Mesoporous Silica

Published online by Cambridge University Press:  31 January 2011

Xiong Liu ,
Weiping Cai  and
Huijuan Bi
Xiong Liu
Affiliation:
Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
Weiping Cai*
Affiliation:
Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
Huijuan Bi
Affiliation:
Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Extract

Nano-sized copper particles are loaded into the pores of monolithic mesoporous silica by soaking and drying, followed by thermal reduction of copper nitrate [Cu(NO3)2]in a hydrogen atmosphere at 973 K for 90 min. It has been shown that copper nanoparticles are isolated from each other and highly uniformly dispersed inside the pores of silica. It is found that the surface plasmon resonance peak of the copper particles shows a significant red-shift with decreasing the particle size, which is in contrast to the corresponding fully embedded system. The peak decreases with exposure time to air and exhibits a linear relation with logarithmic exposure time. This red-shift phenomenon and decrease are explained on the basis of the structural features of this new composite or coexistence of local porosity and the nanoparticle's free surface in contact with air.

Type
Articles
Information
Journal of Materials Research , Volume 17 , Issue 5 , May 2002 , pp. 1125 - 1128
Copyright
Copyright © Materials Research Society 2002

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References

1.Cotter, J.L., Beauchamp, G., and Zerda, T.W., J. Non-Cryst. Solids 142, 208 (1992).Google Scholar
2.Chun-Guey, W. and Thomas, B., Science 264, 1758 (1994).Google Scholar
3.Cai, W. and Zhang, L., J. Phys.: Condens. Matter 9, 7257 (1997).Google Scholar
4.Judeinstein, P. and Schmidt, H., J. Sol-Gel. Sci. Technol. 3, 189 (1994).CrossRefGoogle Scholar
5.Kundu, K. and Chakravorty, D., Appl. Phys. Lett. 66, 3576 (1995).CrossRefGoogle Scholar
6.Cai, W., Tan, M., Wang, G., and Zhang, L., Appl. Phys. Lett. 69, 2980 (1996).CrossRefGoogle Scholar
7.Cai, W. and Zhang, L., Appl. Phys. A 66, 419 (1998).CrossRefGoogle Scholar
8.Cai, W., Hofmeister, H., Rainer, T., and Chen, W., J. Nanopart. Res. 3, 443 (2001).CrossRefGoogle Scholar
9.Ito, Y., Jain, H., and Williams, D.B., Appl. Phys. Lett. 75, 3793 (1999).CrossRefGoogle Scholar
10.Yasuda, T., Komiyama, H., and Tanaka, K., Jpn. J. Appl. Phys. 26, 818 (1987).CrossRefGoogle Scholar
11.Kreibig, U. and Genzel, L., Surf. Sci. 156, 678 (1985).CrossRefGoogle Scholar
12.Kreibig, U. and Vollmer, M., Optical Properties of Metal Clusters (Springer, New York, 1995).CrossRefGoogle Scholar
13.Brunauer, S., Emmett, P.H., and Teller, E., J. Am. Chem. Soc. 60, 309 (1938).CrossRefGoogle Scholar
14.Cai, W., Zhang, L., Zhong, H., and He, G., J. Mater. Res. 13, 2888 (1998).CrossRefGoogle Scholar
15.Kohler, M.A., Curry-Hyde, H.E., Hughes, A.E., Sexton, B.A., and Cant, N.W., J. Catal. 108, 323 (1987).CrossRefGoogle Scholar
16.Abe, H., Charle, K-P., Tesche, B., and Schulze, W., Chem. Phys. 68, 137 (1982).CrossRefGoogle Scholar
17.Eversole, J.D. and Broida, H.P., Phys. Rev. B 15, 1644 (1977).CrossRefGoogle Scholar
18.Hosono, H., Phys. Rev. Lett. 74, 110 (1995).CrossRefGoogle Scholar
19.De, G., Gusso, M., and Tapfer, L., J. Appl. Phys. 80, 6734 (1996).CrossRefGoogle Scholar
20.Presson, B.N.J., Surf. Sci. 281, 153 (1993).CrossRefGoogle Scholar
21.Charle, K.P., Frank, F., and Schulzer, W., Ber. Bunsen-Ges. Phys. Chem. 88, 350 (1984).CrossRefGoogle Scholar
22.Bailar, J.C. Jr., Comprehensive Inorganic Chemistry (Pergamon Press, Oxford, United Kingdom, 1973).Google Scholar
23.Yanase, A., Matsui, H., Tanaka, K., and Komiyama, H., Surf. Sci. 219, L601 (1989).CrossRefGoogle Scholar
24.Weast, R.C., in CRC Handbook of Chemistry and Physics, 80th ed., edited by Lide, D.R. (CRC, Boca Raton, FL, 1998–2000), pp. 12–54.Google Scholar
25.Hapase, M.G., Gharpurey, M.K., and Biswas, A.B., Surf. Sci. 9, 87 (1968).CrossRefGoogle Scholar