The influence of porosity on nanoparticle formation in hierarchical aluminophosphates

Matthew E. Potter; Lauren N. Riley; Alice E. Oakley; Panashe M. Mhembere; June Callison; Robert Raja

doi:10.3762/bjnano.10.191

The influence of porosity on nanoparticle formation in hierarchical aluminophosphates

Matthew E. Potter, Lauren N. Riley, Alice E. Oakley, Panashe M. Mhembere, June Callison, Robert Raja

Department of Chemistry

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

4 Citations (SciVal)

Abstract

In this work we explore the deposition of gold onto a silicoaluminophosphate, using a variety of known nanoparticle deposition techniques. By comparing the gold particles deposited on a traditional microporous aluminophosphate, with an analogous hierarchical species, containing both micropores and mesopores, we explore the influence of this dual porosity on nanoparticle deposition. We show that the presence of mesopores has limited influence on the nanoparticle properties, but allows the system to maintain porosity after nanoparticle deposition. This will aid diffusion of reagents through the system, allowing continued access to the active sites in hierarchical systems, which offers significant potential in catalytic oxidation/reduction reactions.

Original language	English
Pages (from-to)	1952-1957
Number of pages	6
Journal	Beilstein Journal of Nanotechnology
Volume	10
DOIs	https://doi.org/10.3762/bjnano.10.191
Publication status	Published - 25 Sept 2019

Funding

Panashe Mhembere acknowledges AdvanSix and Honeywell LLC for financial support. Dr. Matthew Cooper and the Geochemistry group at the National Oceanography Centre, University of Southampton are thanked for their help performing and analysing the ICP-MS data. The UK Catalysis Hub is kindly thanked for resources and support provided via our membership of the UK Catalysis Hub Consortium and funded by EPSRC grant: EP/R026815/1. The authors wish to acknowledge the Diamond Light Source and the UK Catalysis Hub for provision of beamtime (proposal number SP19850-2). Dr. Mark Isaacs and HarwellXPS are thanked for their assistance collecting the XPS data for this work.

Funders	Funder number
UOP LLC
Engineering and Physical Sciences Research Council	SP19850-2, EP/R026815/1
University of Southampton

Keywords

Aluminophosphate
Catalysis
Hierarchical catalysts
Nanoparticles
Porosity

ASJC Scopus subject areas

General Materials Science
General Physics and Astronomy
Electrical and Electronic Engineering

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10.3762/bjnano.10.191Licence: CC BY

Cite this

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AU - Raja, Robert

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AB - In this work we explore the deposition of gold onto a silicoaluminophosphate, using a variety of known nanoparticle deposition techniques. By comparing the gold particles deposited on a traditional microporous aluminophosphate, with an analogous hierarchical species, containing both micropores and mesopores, we explore the influence of this dual porosity on nanoparticle deposition. We show that the presence of mesopores has limited influence on the nanoparticle properties, but allows the system to maintain porosity after nanoparticle deposition. This will aid diffusion of reagents through the system, allowing continued access to the active sites in hierarchical systems, which offers significant potential in catalytic oxidation/reduction reactions.

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The influence of porosity on nanoparticle formation in hierarchical aluminophosphates

Abstract

Funding

Keywords

ASJC Scopus subject areas

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