Davies, Robert J., Bowker, Michael  ORCID: https://orcid.org/0000-0001-5075-1089, Davies, Philip Rosser ORCID: https://orcid.org/0000-0003-4394-766X and Morgan, David John ORCID: https://orcid.org/0000-0002-6571-5731
2013.
A facile route to model catalysts: the synthesis of Au@Pd core-shell nanoparticles on y-Fe2O3 (0001).
Nanoscale
5
, pp. 9018-9022.
10.1039/c3nr03047d
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Abstract
A straightforward method of synthesising Au@Pd core–shell particles on a well characterised γ-Fe2O3 (0001) substrate has been developed which will enable fundamental studies into the surface chemistry of these catalytically interesting systems. Au and Pd were sequentially deposited onto a γ-Fe2O3 (0001) substrate in ultra high vacuum by metal vapour deposition and probed by LEIS and STM. Deposition of Au followed by heating at 573 K formed nanoparticles of 5 to 10 nm in diameter whereas subsequent deposition of Pd produced smaller nanoparticles of 2 to 4 nm diameter. At this stage, LEIS shows both metals to be present but heating the combined system to 573 K resulted in the loss of the Au signal in the LEIS and disappearance of the smaller particles from the STM images indicating the formation of Au@Pd core–shell structures.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Research Institutes & Centres > Cardiff Catalysis Institute (CCI) Schools > Chemistry |
| Subjects: | Q Science > QD Chemistry |
| Publisher: | Royal Society of Chemistry |
| ISSN: | 2040-3372 |
| Funders: | EPSRC |
| Date of First Compliant Deposit: | 30 March 2016 |
| Last Modified: | 10 Apr 2024 07:03 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/49984 |
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