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Embedding colloidal nanoparticles inside mesoporous silica using gas expanded liquids for high loading recyclable catalysts
Holmes, Justin D.
Royal Society of Chemistry
The ability to tune the structural and chemical properties of colloidal nanoparticles (NPs), make them highly advantageous for studying activity and selectivity dependent catalytic behaviour. Incorporating pre-synthesized colloidal NPs into porous supports materials remains a challenge due to poor wetting and pore permeability. In this report monodisperse, composition controlled AgPd alloy NPs were synthesised and embedded into SBA-15 using supercritical carbon dioxide and hexane. Supercritical fluid impregnation resulted in high metal loading without the requirement for surface pre-treatments. The catalytic activity, reaction profiles and recyclability of the alloy NPs embedded in SBA-15 and immobilised on non-porous SiO2 are evaluated. The NPs incorporated within the SBA-15 porous network showed significantly greater recyclability performance compared to non-porous SiO2.
Colloidal nanoparticles , Porous supports materials , Pore permeability , High metal loading , Catalysis
Collins, G., Rahme, K., O’Connell, J., and Holmes, Justin D. (2016) ‘Embedding colloidal nanoparticles inside mesoporous silica using gas expanded liquids for high loading recyclable catalysts’, Catalysis Science and Technology, 6(19), pp 7212-7219. doi: 10.1039/C6CY00584E
© 2016, The Authors. Reproduced from Catalysis Science & Technology with permission from the Royal Society of Chemistry.