A gold-coated titanium oxide nanotube array for the oxidation of borohydride ions
A gold-coated titanium oxide nanotube array for the oxidation of borohydride ions
Highly ordered titanium dioxide nanotube (?100 - 200 nm pore diameter) arrays, were formed on a titanium foil by anodising at a cell voltage of 60 V, in two stages. The nanotube arrays were over-coated with nanoparticulate gold using physical vapour deposition (PVD) sputtering resulting in a well dispersed coating. The electrodes were used to study the oxidation of 20 x 10-3 mol dm-3 borohydride ions in 3 mol dm-3 NaOH, at 298 K, by cyclic voltammetry. The gold-coated titanium oxide nanotube array electrodes provided higher electrical charge per unit mass of gold and unit area that a gold nanoparticle deposit on carbon and gold adsorbed on hydrothermally synthesised titanate nanotubes offering a reliable and low cost technique to produce a high surface area anode for a direct borohydride fuel cell.
166-169
Low, C.T.J.
e993d0ca-2b64-424b-9535-20bc8b78415f
Ponce de León, Carlos
508a312e-75ff-4bcb-9151-dacc424d755c
Walsh, F.C.
309528e7-062e-439b-af40-9309bc91efb2
Low, C.T.J.
e993d0ca-2b64-424b-9535-20bc8b78415f
Ponce de León, Carlos
508a312e-75ff-4bcb-9151-dacc424d755c
Walsh, F.C.
309528e7-062e-439b-af40-9309bc91efb2
Low, C.T.J., Ponce de León, Carlos and Walsh, F.C.
(2012)
A gold-coated titanium oxide nanotube array for the oxidation of borohydride ions.
Electrochemistry Communications, 22 (10), .
(doi:10.1016/j.elecom.2012.06.003).
Abstract
Highly ordered titanium dioxide nanotube (?100 - 200 nm pore diameter) arrays, were formed on a titanium foil by anodising at a cell voltage of 60 V, in two stages. The nanotube arrays were over-coated with nanoparticulate gold using physical vapour deposition (PVD) sputtering resulting in a well dispersed coating. The electrodes were used to study the oxidation of 20 x 10-3 mol dm-3 borohydride ions in 3 mol dm-3 NaOH, at 298 K, by cyclic voltammetry. The gold-coated titanium oxide nanotube array electrodes provided higher electrical charge per unit mass of gold and unit area that a gold nanoparticle deposit on carbon and gold adsorbed on hydrothermally synthesised titanate nanotubes offering a reliable and low cost technique to produce a high surface area anode for a direct borohydride fuel cell.
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e-pub ahead of print date: 15 June 2012
Organisations:
Engineering Science Unit
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Local EPrints ID: 348252
URI: http://eprints.soton.ac.uk/id/eprint/348252
ISSN: 1388-2481
PURE UUID: 9795bf11-634b-44b1-ba28-b8709b53cb9d
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Date deposited: 11 Feb 2013 11:12
Last modified: 15 Mar 2024 03:22
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C.T.J. Low
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