Abstract
In this article we desribe the preparation of microparticles of platinum and cadmium sulphide in reverse micellar media. The equilibrium particle size is rationalised in terms of the kinetics of the rate determining step. In the case of platinum this is the reduction step PtIV → Pt0. For CdS semiconductor microparticles the kinetics of microparticle formation has been followed as a function of wavelength using stopped-flow kinetics. The important step is shown to be the inter-droplet reagent transfer.
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References
Boutonnet, M., Kizling, J., Stenius P., and Maire, G. (1982) The preparation of monodisperse colloidal metal particles from microemulsions’, Colloid Surf. 5, 209–225.
Khan-Lodhi, A., Robinson, B.H. and Towey, T. (1989) ‘Microparticle synthesis and characterisation in reverse micelles’, in M. P. Pileni (ed.) Structure and Reactivity in Reverse Micelles, Elsevier Science Publishers, pp. 198–220.
Meyer, M., Wallberg, C., Kurihara K and Fendler, J.H. (1984) ‘Photosensitized charge separation and hydrogen production in reversed micelle entrapped platinized colloidal cadmium sulphide’, J. Chem. Soc. Chem. Comm., 90–91.
Lianos, P. and Thomas, J.K. (1986) ‘Cadmium sulfide of small dimensions in inverted micelles’, Chem. Phys. Lett., 125, 299–302.
Petit C. and Pileni M.P. (1988) ‘Synthesis of cadmium sulfide in situ in reverse micelles and in hydrocarbon gels’, J. Phys. Chem., 92, 2282–2286.
Steigerwald, M.L., Alivisatos, A.P, Gibson, J.M., Harris, T.D., Kortan, R., Muller, A.J., Thayer, A.M., Duncan, T.M., Douglas, D.C. and Brus, L.E. (1988) ‘Surface derivatisation and isolation of semiconductor cluster molecules’. J. Am. Chem. Soc., 110, 3046–3050.
Rosetti, R., Nakahara, S. and Brus, L.E. (1983) ‘Quantum size effects in the redox potentials, resonance Raman spectra and electronic spectra of CdS crystallites in aqueous solution’, J. Chem. Phys., 79(2), 1085–1087.
Fojtik, A., Weiler, H., Koch, U. and Henglein, A. (1984) ‘Photochemistry of colloidal metal sulfides. Photophysics of extremely small CdS particles: Q-state CdS and magic agglomeration numbers’, Ber. Bunsenges, Phys. Chem., 1988, 969–977.
Atik, S.S. and Thomas, J.K. (1981) Transport of photoproduced ions in water in oil microemulsions: movement of ions from one water pool to another’, J. Am. Chem.Soc., 103, 3543–3550.
Fletcher, P.D.I., Howe, A.M. and Robinson B.H. (1987) ‘The kinetics of solubilizate exchange between water droplets of a water-in-oil microemulsion’, J. Chem.Soc., Faraday Trans. 1,83, 985–1006.
Eigen, M. (1963) ‘Fast elementary steps in chemical reaction mechanisms’, Pure Appl. Chem., 6, 97–115.
Fischer, Ch.-H., Weller, H., Fojtik, A., Lume-Pereira, C, Janata, E and Henglein A. (1986), ‘Photochemistry of colloidal semiconductors. Exclusion chromatography and stop flow experiments on formation of extremely small CdS particles’, Ber. Bunsenges, Phys. Chem., 90, 46–49.
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© 1990 Springer Science+Business Media Dordrecht
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Khan-Lodhi, A., Robinson, B.H., Towey, T., Herrmann, C., Knoche, W., Thesing, U. (1990). Microparticle Formation in Reverse Micelles. In: Bloor, D.M., Wyn-Jones, E. (eds) The Structure, Dynamics and Equilibrium Properties of Colloidal Systems. NATO ASI Series, vol 324. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-3746-1_25
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DOI: https://doi.org/10.1007/978-94-011-3746-1_25
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