Embedding colloidal nanoparticles inside mesoporous silica using gas expanded liquids for high loading recyclable catalysts

Gillian Collins; Kamil Rahme; John O'Connell; Justin D. Holmes

doi:10.1039/c6cy00584e

Embedding colloidal nanoparticles inside mesoporous silica using gas expanded liquids for high loading recyclable catalysts

Gillian Collins
, Kamil Rahme
, John O'Connell
, Justin D. Holmes

School of Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

The ability to tune the structural and chemical properties of colloidal nanoparticles (NPs) makes them highly advantageous for studying activity and selectivity dependent catalytic behaviour. Incorporating pre-synthesised colloidal NPs into porous support materials remains a challenge due to poor pore wetting and permeability. In this report, monodisperse, composition-controlled AgPd alloy NPs were synthesised and embedded into mesoporous silica SBA-15 using carbon dioxide and expanded hexane. 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.

Original language	English
Pages (from-to)	7212-7219
Number of pages	8
Journal	Catalysis Science and Technology
Volume	6
Issue number	19
DOIs	https://doi.org/10.1039/c6cy00584e
Publication status	Published - 2016

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10.1039/c6cy00584e

https://hdl.handle.net/10468/3141Licence: CC BY-NC-ND

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title = "Embedding colloidal nanoparticles inside mesoporous silica using gas expanded liquids for high loading recyclable catalysts",

abstract = "The ability to tune the structural and chemical properties of colloidal nanoparticles (NPs) makes them highly advantageous for studying activity and selectivity dependent catalytic behaviour. Incorporating pre-synthesised colloidal NPs into porous support materials remains a challenge due to poor pore wetting and permeability. In this report, monodisperse, composition-controlled AgPd alloy NPs were synthesised and embedded into mesoporous silica SBA-15 using carbon dioxide and expanded hexane. 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.",

author = "Gillian Collins and Kamil Rahme and John O'Connell and Holmes, \{Justin D.\}",

note = "Publisher Copyright: {\textcopyright} 2016 The Royal Society of Chemistry.",

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AU - Holmes, Justin D.

PY - 2016

Y1 - 2016

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AB - The ability to tune the structural and chemical properties of colloidal nanoparticles (NPs) makes them highly advantageous for studying activity and selectivity dependent catalytic behaviour. Incorporating pre-synthesised colloidal NPs into porous support materials remains a challenge due to poor pore wetting and permeability. In this report, monodisperse, composition-controlled AgPd alloy NPs were synthesised and embedded into mesoporous silica SBA-15 using carbon dioxide and expanded hexane. 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.

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DO - 10.1039/c6cy00584e

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JO - Catalysis Science and Technology

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Embedding colloidal nanoparticles inside mesoporous silica using gas expanded liquids for high loading recyclable catalysts

Abstract

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