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Octahedral rhenium K4 [Re6S8 (CN) 6] and Cu (OH) 2 cluster modified TiO2 for the photoreduction of CO2 under visible light irradiation

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dc.contributor.authorPawan Kumar
dc.date.accessioned2025-05-01T20:52:12Z
dc.date.available2025-05-01T20:52:12Z
dc.date.issued2015-09-08
dc.descriptionOctahedralhexacyano rheniumK4[Re6S8(CN)6] cluster complexes were graftedontophotoactiveCu(OH)2 cluster modified TiO2 {Cu(OH)2/TiO2} support. The rhenium and copper cluster modified TiO2 photocatalyst combines the advantages of heterogeneous catalyst (facile recovery, recycling ability of the catalyst) with the reactivity, selectivity of the soluble molecular catalyst. The synthesized heterogeneous catalyst was found to be highly efficient photoredox catalyst for the reduction of CO2 under visible light irradiation. Methanol was found to be the major liquid product with the formation of hydrogen as a by product as determined with GC-FID and GC-TCD, respectively. The methanol yield after 24 h irradiation was found to be 149 mol/0.1 g cat. for Re-cluster@Cu(OH)2/TiO2 photocatalyst that is much higher than 35 mol/0.1 g cat. for Cu(OH)2/TiO2 and 75 mol/0.1 g cat. for equimolar rhenium cluster in the presence of triethanolamine (TEOA) as a sacrificial donor. The quantum yields (MeOH) of Re-cluster@Cu(OH)2/TiO2 and Cu(OH)2/TiO2 were found to be 0.018 and 0.004 mol einstein−1, respectively. These values are much higher than those reported for other heterogeneous catalysts for six electron transfer reaction.
dc.identifier.doihttps://doi.org/10.7939/r3-9zw7-kt10
dc.language.isoen
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.subjectPhotocatalysis
dc.subjectCO2 Reduction
dc.subjectmetal clusters
dc.titleOctahedral rhenium K4 [Re6S8 (CN) 6] and Cu (OH) 2 cluster modified TiO2 for the photoreduction of CO2 under visible light irradiation
dc.typehttp://purl.org/coar/resource_type/c_6501 http://purl.org/coar/version/c_970fb48d4fbd8a85
ual.jupiterAccesshttp://terms.library.ualberta.ca/public

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