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SERS at structured palladium and platinum surfaces

SERS at structured palladium and platinum surfaces
SERS at structured palladium and platinum surfaces
Palladium and platinum are important catalytic metals, and it would be highly advantageous to be able to use surface enhanced Raman spectroscopy (SERS) to study reactive species and intermediates on their surfaces. In this paper we describe the use of templated electrodeposition through colloidal templates to produce thin (<1 m) films of palladium and platinum containing close packed hexagonal arrays of uniform sphere segment voids. We show that, even though these films are not rough, when the appropriate film thickness and sphere diameter are employed these surfaces give stable, reproducible surface enhancements for Raman scattering from molecules adsorbed at the metal surface. We report SERS spectra for benzenethiol adsorbed on the structured palladium and platinum surfaces of different thicknesses and void diameters and show that, for 633 nm radiation, enhancements of 1800 and 550 can be obtained for palladium and platinum, respectively.
coated gold electrodes, scattering, silver electrode, electrochemical interfaces, films, transition-metals, nanoparticles, adsorption, carbon-monoxide, enhanced raman-spectroscopy
0002-7863
7399-7406
Abdelsalam, Mamdouh E.
d1cbddcb-9f5c-46d5-b774-1bbaee26e115
Mahajan, Sumeet
b131f40a-479e-4432-b662-19d60d4069e9
Bartlett, Philip N.
d99446db-a59d-4f89-96eb-f64b5d8bb075
Baumberg, Jeremy J.
51423b5f-bdb8-4851-8d50-472253ceb12c
Russell, Andrea E.
b6b7c748-efc1-4d5d-8a7a-8e4b69396169
Abdelsalam, Mamdouh E.
d1cbddcb-9f5c-46d5-b774-1bbaee26e115
Mahajan, Sumeet
b131f40a-479e-4432-b662-19d60d4069e9
Bartlett, Philip N.
d99446db-a59d-4f89-96eb-f64b5d8bb075
Baumberg, Jeremy J.
51423b5f-bdb8-4851-8d50-472253ceb12c
Russell, Andrea E.
b6b7c748-efc1-4d5d-8a7a-8e4b69396169

Abdelsalam, Mamdouh E., Mahajan, Sumeet, Bartlett, Philip N., Baumberg, Jeremy J. and Russell, Andrea E. (2007) SERS at structured palladium and platinum surfaces. Journal of the American Chemical Society, 129 (23), 7399-7406. (doi:10.1021/ja071269m).

Record type: Article

Abstract

Palladium and platinum are important catalytic metals, and it would be highly advantageous to be able to use surface enhanced Raman spectroscopy (SERS) to study reactive species and intermediates on their surfaces. In this paper we describe the use of templated electrodeposition through colloidal templates to produce thin (<1 m) films of palladium and platinum containing close packed hexagonal arrays of uniform sphere segment voids. We show that, even though these films are not rough, when the appropriate film thickness and sphere diameter are employed these surfaces give stable, reproducible surface enhancements for Raman scattering from molecules adsorbed at the metal surface. We report SERS spectra for benzenethiol adsorbed on the structured palladium and platinum surfaces of different thicknesses and void diameters and show that, for 633 nm radiation, enhancements of 1800 and 550 can be obtained for palladium and platinum, respectively.

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More information

Published date: 13 June 2007
Keywords: coated gold electrodes, scattering, silver electrode, electrochemical interfaces, films, transition-metals, nanoparticles, adsorption, carbon-monoxide, enhanced raman-spectroscopy
Organisations: Chemistry, Institute for Life Sciences

Identifiers

Local EPrints ID: 54228
URI: http://eprints.soton.ac.uk/id/eprint/54228
ISSN: 0002-7863
PURE UUID: d5da7581-5875-4b68-a783-ed6cccd6961a
ORCID for Sumeet Mahajan: ORCID iD orcid.org/0000-0001-8923-6666
ORCID for Philip N. Bartlett: ORCID iD orcid.org/0000-0002-7300-6900
ORCID for Andrea E. Russell: ORCID iD orcid.org/0000-0002-8382-6443

Catalogue record

Date deposited: 29 Jul 2008
Last modified: 10 Nov 2021 03:18

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Contributors

Author: Mamdouh E. Abdelsalam
Author: Sumeet Mahajan ORCID iD
Author: Jeremy J. Baumberg

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