The oxidation of water by cerium(IV) catalysed by nanoparticulate RuO2 on mesoporous silica

Mesoporous silicates are prepared by templating on the hexagonal (H1) mesophase of surfactant bipyridine complexes of ruthenium(II) using a true liquid-crystal templating approach. On calcination, the surfactant template is removed except for the central metal ion that is oxidised, forming nanoparti...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2005-01, Vol.2005 (6), p.1027-NP
Main Authors: King, Nicola C, Dickinson, Calum, Zhou, Wuzong, Bruce, Duncan W
Format: Article
Language:English
Subjects:
2,2'-Dipyridyl - analogs & derivatives
2,2'-Dipyridyl - chemistry
Catalysis
Cerium - chemistry
Molecular Conformation
Nanoparticles - chemistry
Oxidation-Reduction
Particle Size
Porosity
Ruthenium Compounds - chemistry
Silicon Dioxide - chemistry
Surface Properties
Surface-Active Agents - chemistry
Time Factors
Water - chemistry
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Summary:Mesoporous silicates are prepared by templating on the hexagonal (H1) mesophase of surfactant bipyridine complexes of ruthenium(II) using a true liquid-crystal templating approach. On calcination, the surfactant template is removed except for the central metal ion that is oxidised, forming nanoparticles of RuO2 that deposit within the pores. RuO2 is a known oxidation catalyst and, despite its anhydrous nature in these silicates, is found to be very active in catalyzing the oxidation of water by acidic CeIV.
ISSN:1477-9226
0300-9246
1477-9234
DOI:10.1039/b415288c