Loading…

Tungsten oxide by non-hydrolytic sol-gel: effect of molecular precursor on morphology, phase and photocatalytic performance

A practical gram-scale synthesis of high surface area blue tungsten oxide via a non-hydrolytic sol-gel method is reported. The use of diisopropyl ether in 1,2-dichloroethane at 180 °C transforms W( vi ) and W( iv ) chloride precursors into WO x materials of cube or rod-like morphology respectively....

Full description

Saved in:
Bibliographic Details
Published in:New journal of chemistry 2016-01, Vol.4 (1), p.217-222
Main Authors: Oakton, Emma, Siddiqi, Georges, Fedorov, Alexey, Copéret, Christophe
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A practical gram-scale synthesis of high surface area blue tungsten oxide via a non-hydrolytic sol-gel method is reported. The use of diisopropyl ether in 1,2-dichloroethane at 180 °C transforms W( vi ) and W( iv ) chloride precursors into WO x materials of cube or rod-like morphology respectively. These oxides are characterised by a range of methods including TEM, N 2 adsorption-desorption, XRD, XAS, EPR, UV-Vis DRS, elemental analysis and conductivity measurements. Treatment of WO x under N 2 causes a decrease in surface area and increase in electrical conductivity. Prepared materials are investigated as catalysts for oxygen evolution by photocatalytic water splitting. The synthesis, characterisation and photocatalytic water splitting activity of blue tungsten oxide materials prepared from W( vi ) and W( iv ) precursors is reported.
ISSN:1144-0546
1369-9261
DOI:10.1039/c5nj01973g