Abstract
Synthesis of hybrid aerogel materials that contain both selectively reactive nanoparticles and nanoparticles with appreciable magnetic susceptibilities will be reported. This has been achieved by a two stages process. First silica-bioderived polymer hybrid aerogels with incorporated metal ions were synthesized and then reduced by photolytically induced chemical reductions or decompositions. For example, silica-chitosan hybrid gels were prepared, Au(III) ions were coordinated to the chitosan, and, after forming the Au(III)-silica-chitosan aerogel by SCL extraction, UV photolysis afforded gold nanoparticles of controlled size in the aerogel. Second, an iron-containing organometallic compound, such as iron carbonyl itself, was absorbed into the aerogel, and then heating or photolysis afforded reduced metal decomposition products. Ferromagnetic organic/inorganic hybrid products containing Au(0) nanoparticles were obtained. Their size (TEM), crystallographic, optical and magnetic properties are discussed. Reactions of thiol compound with the metal nanoparticles in the aerogels were studied.
Similar content being viewed by others
References
Berry, C. C and Custins, A.S.G., Phys.D: Appl. Phys 36 (13) R198 (2003)
P. Gould, Mataerials Today, Feb 36 (2004)
X. Liu, Y.Zhu, C. Yao and W. M. Risen, Jr, Mat. Res. Soc. Symp.Proc. Vol 788, L2.1.1, (2003)
M. Wang, X. Liu S. Ji and W. M. Risen, Jr. Mat.Res.Soc. Symp. Proc. Vol 702 U3.5 (2001)
X. Liu, M. Wang and W.M. Risen, Jr. Mat.Res.Soc.Symp.Proc. Vol 740, I12.24 (2002)
W. M. Risen, Jr., S. Ji, X. Hu, and R. Zhang, U.S. Patent 6,303,046 B1
X. Hu, K. Littrell, S. Ji, D. Pickles and W. M. Risen, Jr., J. Non-cryst. Solids 288 184(2001)
K.S. Suslick, M. Fang and T. Hyeon, J. Am. Chem. Soc 118, 11960 (1996)
S. Veintemillas-Verdagure, O. Bomati, M.P. Morakes, P.E. DiNumzio and S. Martelli, Materials Letter 57, 1184 (2003)
M. S. Lund, W.A. A. Macedo, K, Liu, J. Nogues, I. K. Schuller and C. Leighton, Physical Review B, 66, 054422 (2002)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Yao, C., Risen, W.M. Formation and Reaction of Metal-containing Nanoparticles in Organic/Inorganic Hybrid Aerogels. MRS Online Proceedings Library 847, 351–356 (2004). https://doi.org/10.1557/PROC-847-EE5.10
Published:
Issue Date:
DOI: https://doi.org/10.1557/PROC-847-EE5.10