The University of Southampton
University of Southampton Institutional Repository

The preparation and characterisation of H-1-e palladium films with a regular hexagonal nanostructure formed by electrochemical deposition from lyotropic liquid crystalline phases

The preparation and characterisation of H-1-e palladium films with a regular hexagonal nanostructure formed by electrochemical deposition from lyotropic liquid crystalline phases
The preparation and characterisation of H-1-e palladium films with a regular hexagonal nanostructure formed by electrochemical deposition from lyotropic liquid crystalline phases
The hexagonal (H-1) lyotropic liquid crystalline phases of C16EO8 (octaethyleneglycol monohexadecyl ether) and Brij® 56 non-ionic surfactants have been used to template the electrochemical deposition of nanostructured palladium films. The resulting H-1-e palladium films were characterised by SEM, TEM and X-ray. The films contain regular hexagonal arrays of cylindrical pores separated by palladium walls with a centre to centre distance of 5.8 nm. Electrochemical studies show that these films have very high surface areas of the order of 91 m(2) g(-1). Studies of the hydrogen evolution reaction on these H-1-e palladium films in acid show that the formation of adsorbed hydrogen can be readily distinguished because of the high surface area to volume ratio of the films (of the order of 10(7) cm(2) cm(-3)). Hydrogen insertion into the palladium films is fast and the formation of both the alpha and beta-hydride phases is observed in the voltammetry at potentials which are similar to those reported for bulk palladium. The electrodes are stable towards repeated cycling to form the beta-hydride phase showing that the hydrogen insertion and concomitant lattice expansion does not destroy the H-1 nanostructure.
platinum films, hydrogen adsorption, acidic solutions, absorption, electrodes, deuterium, behavior, microelectrodes, templates, oxidation
1463-9076
3835-3842
Bartlett, P.N.
d99446db-a59d-4f89-96eb-f64b5d8bb075
Gollas, B.
d674793a-ae37-4004-824c-f499b4aef84a
Guerin, S.
e185e0c2-85c6-4d1c-a2cf-cd2f410d346f
Marwan, J.
0773b54a-4b3a-41ea-ab7d-e4507fd3407e
Bartlett, P.N.
d99446db-a59d-4f89-96eb-f64b5d8bb075
Gollas, B.
d674793a-ae37-4004-824c-f499b4aef84a
Guerin, S.
e185e0c2-85c6-4d1c-a2cf-cd2f410d346f
Marwan, J.
0773b54a-4b3a-41ea-ab7d-e4507fd3407e

Bartlett, P.N., Gollas, B., Guerin, S. and Marwan, J. (2002) The preparation and characterisation of H-1-e palladium films with a regular hexagonal nanostructure formed by electrochemical deposition from lyotropic liquid crystalline phases. Physical Chemistry Chemical Physics, 4 (15), 3835-3842. (doi:10.1039/b201845d).

Record type: Article

Abstract

The hexagonal (H-1) lyotropic liquid crystalline phases of C16EO8 (octaethyleneglycol monohexadecyl ether) and Brij® 56 non-ionic surfactants have been used to template the electrochemical deposition of nanostructured palladium films. The resulting H-1-e palladium films were characterised by SEM, TEM and X-ray. The films contain regular hexagonal arrays of cylindrical pores separated by palladium walls with a centre to centre distance of 5.8 nm. Electrochemical studies show that these films have very high surface areas of the order of 91 m(2) g(-1). Studies of the hydrogen evolution reaction on these H-1-e palladium films in acid show that the formation of adsorbed hydrogen can be readily distinguished because of the high surface area to volume ratio of the films (of the order of 10(7) cm(2) cm(-3)). Hydrogen insertion into the palladium films is fast and the formation of both the alpha and beta-hydride phases is observed in the voltammetry at potentials which are similar to those reported for bulk palladium. The electrodes are stable towards repeated cycling to form the beta-hydride phase showing that the hydrogen insertion and concomitant lattice expansion does not destroy the H-1 nanostructure.

Full text not available from this repository.

More information

Published date: 2002
Keywords: platinum films, hydrogen adsorption, acidic solutions, absorption, electrodes, deuterium, behavior, microelectrodes, templates, oxidation

Identifiers

Local EPrints ID: 19665
URI: http://eprints.soton.ac.uk/id/eprint/19665
ISSN: 1463-9076
PURE UUID: 1adb50b3-2dd7-45e1-89db-fc9ed7e02edf
ORCID for P.N. Bartlett: ORCID iD orcid.org/0000-0002-7300-6900

Catalogue record

Date deposited: 16 Feb 2006
Last modified: 03 Dec 2019 02:04

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×