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 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.
King
Nicola C
NC
Department of Chemistry, University of Exeter, Stocker Road, Exeter EX4 4QD, UK.
Dickinson
Calum
C
Zhou
Wuzong
W
Bruce
Duncan W
DW
D015082:2,2'-Dipyridyl / Q000031:analogs & derivatives / Q000737:chemistry; D002384:Catalysis; D002563:Cerium / Q000737:chemistry*; D008968:Molecular Conformation; D053758:Nanoparticles / Q000737:chemistry*; D010084:Oxidation-Reduction; D010316:Particle Size; D016062:Porosity; D017975:Ruthenium Compounds / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry*; D013499:Surface Properties; D013501:Surface-Active Agents / Q000737:chemistry; D013997:Time Factors; D014867:Water / Q000737:chemistry*
D017975:Ruthenium Compounds; D013501:Surface-Active Agents; D014867:Water; C029017:ruthenium dioxide; D002563:Cerium; D015082:2,2'-Dipyridyl; D012822:Silicon Dioxide