Sorption of hydrogen onto titanate nanotubes decorated with a nanostructured Cd3[Fe(CN)6]2 Prussian Blue analogue


Al-Hajjaj, A.A., Zamora, B., Bavykin, D.V., Shah, A.A., Walsh, F.C. and Reguera, E. (2012) Sorption of hydrogen onto titanate nanotubes decorated with a nanostructured Cd3[Fe(CN)6]2 Prussian Blue analogue. International Journal of Hydrogen Energy, 37, (1), 318-326. (doi:10.1016/j.ijhydene.2011.09.094).

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Description/Abstract

Nanostructured films of cadmium hexacyanoferrate (III), Cd3[Fe(CN)6]2 have been deposited on the surface of titanate nanotubes (TiNT) by ion exchange with CdSO4, followed by reaction with K3[Fe(CN)6] in an aqueous suspension. The composite demonstrates a significantly higher hydrogen storage uptake than pure Cd3[Fe(CN)6]2 and TiNT. At a temperature of 77 K and a pressure 100 bar, the hydrogen uptake for the composite is approximately 12.5 wt %, whereas only 4.5 wt % and 4 wt % are achieved for the TiNT and Cd3[Fe(CN)6]2 respectively. Electron microscopy and infrared spectroscopy show that Cd3[Fe(CN)6]2 is uniformly distributed on the surface of the nanotubes forming a discontinuous nanostructured film with a well developed interface, which allows efficient interaction with the support. The possible reasons for the high uptake of hydrogen in the composite are discussed

Item Type: Article
ISSNs: 0360-3199 (print)
0360-3199 (electronic)
Keywords: ferricyanide, titanate nanotubes, cadmium hexacyanoferrate, hydrogen storage, high pressure
Subjects: Q Science > QC Physics
Q Science > QD Chemistry
T Technology > TP Chemical technology
Divisions: Faculty of Engineering and the Environment > Engineering Sciences > Engineering Materials Surface Engineering
ePrint ID: 207415
Date Deposited: 12 Jan 2012 11:07
Last Modified: 27 Mar 2014 19:49
URI: http://eprints.soton.ac.uk/id/eprint/207415

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