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Synthesis of well-dispersed nanoparticles within porous solid structures using surface-tethered surfactants in supercritical CO2

Yu, K.M.K., Steele, A.M., Zhu, J., Fu, Q.J. and Tsang, S.C. (2003) Synthesis of well-dispersed nanoparticles within porous solid structures using surface-tethered surfactants in supercritical CO2. Journal of Materials Chemistry, 13 (1). pp. 130-134. ISSN 0959-9428

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To link to this item DOI: 10.1039/b207064b

Abstract/Summary

We have developed a new method for the synthesis of Pd nanoparticles with controllable sizes within a silica matrix using solid-supported surfactants in supercritical CO2. XRD, HRTEM and CO chemisorption data show that unformly sized Pd nanoparticles are evenly distributed within the porous silica and are chemically tethered by surfactant molecules [poly(oxyethylene stearyl ether) and fluorinated poly(oxyethylene)]. It is postulated that tiny solid-supported surfactant assemblies act as nano-reactors for the template synthesis of nanoparticles or clusters from the soluble precursors therein.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Life Sciences > School of Chemistry, Food and Pharmacy > Department of Chemistry
ID Code:11722
Uncontrolled Keywords:CATALYTIC-HYDROGENATION, PARTICLE-SIZE, SILVER, GOLD, 2,4-DINITROTOLUENE, MICROEMULSION, WATER

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