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

  • Xiong Liu (a1), Weiping Cai (a1) and Huijuan Bi (a1)

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.

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a)Address all correspondence to this author. e-mail: wpcai@mail.issp.ac.cn

References

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1.Cotter, J.L., Beauchamp, G., and Zerda, T.W., J. Non-Cryst. Solids 142, 208 (1992).
2.Chun-Guey, W. and Thomas, B., Science 264, 1758 (1994).
3.Cai, W. and Zhang, L., J. Phys.: Condens. Matter 9, 7257 (1997).
4.Judeinstein, P. and Schmidt, H., J. Sol-Gel. Sci. Technol. 3, 189 (1994).
5.Kundu, K. and Chakravorty, D., Appl. Phys. Lett. 66, 3576 (1995).
6.Cai, W., Tan, M., Wang, G., and Zhang, L., Appl. Phys. Lett. 69, 2980 (1996).
7.Cai, W. and Zhang, L., Appl. Phys. A 66, 419 (1998).
8.Cai, W., Hofmeister, H., Rainer, T., and Chen, W., J. Nanopart. Res. 3, 443 (2001).
9.Ito, Y., Jain, H., and Williams, D.B., Appl. Phys. Lett. 75, 3793 (1999).
10.Yasuda, T., Komiyama, H., and Tanaka, K., Jpn. J. Appl. Phys. 26, 818 (1987).
11.Kreibig, U. and Genzel, L., Surf. Sci. 156, 678 (1985).
12.Kreibig, U. and Vollmer, M., Optical Properties of Metal Clusters (Springer, New York, 1995).
13.Brunauer, S., Emmett, P.H., and Teller, E., J. Am. Chem. Soc. 60, 309 (1938).
14.Cai, W., Zhang, L., Zhong, H., and He, G., J. Mater. Res. 13, 2888 (1998).
15.Kohler, M.A., Curry-Hyde, H.E., Hughes, A.E., Sexton, B.A., and Cant, N.W., J. Catal. 108, 323 (1987).
16.Abe, H., Charle, K-P., Tesche, B., and Schulze, W., Chem. Phys. 68, 137 (1982).
17.Eversole, J.D. and Broida, H.P., Phys. Rev. B 15, 1644 (1977).
18.Hosono, H., Phys. Rev. Lett. 74, 110 (1995).
19.De, G., Gusso, M., and Tapfer, L., J. Appl. Phys. 80, 6734 (1996).
20.Presson, B.N.J., Surf. Sci. 281, 153 (1993).
21.Charle, K.P., Frank, F., and Schulzer, W., Ber. Bunsen-Ges. Phys. Chem. 88, 350 (1984).
22.Bailar, J.C. Jr., Comprehensive Inorganic Chemistry (Pergamon Press, Oxford, United Kingdom, 1973).
23.Yanase, A., Matsui, H., Tanaka, K., and Komiyama, H., Surf. Sci. 219, L601 (1989).
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. 1254.
25.Hapase, M.G., Gharpurey, M.K., and Biswas, A.B., Surf. Sci. 9, 87 (1968).

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

  • Xiong Liu (a1), Weiping Cai (a1) and Huijuan Bi (a1)

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