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Keggin type of cesium phosphomolybdate synthesized via solid-state reaction as an efficient catalyst for the photodegradation of a dye pollutant in aqueous phase

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dc.contributor.authorGhalebi, H.R.
dc.contributor.authorAber, S.
dc.contributor.authorKarimi, A.
dc.date.issued2016
dc.descriptionData source: Supplementary data, https://doi.org/10.1016/j.molcata.2016.01.031
dc.description.abstractHere the potential use of cesium phosphomolybdate salt as a photocatalyst for the photodegradation of dye pollutants was studied. Polyoxometalates salts, having Keggin structure with large cations like Cs+, are porous materials. Cs₃PMo₁₂O₄₀ salt was prepared by solid-state method with a much higher surface area than the original Keggin-type heteropolyacids (H₃PMo₁₂2O₄₀). The morphological and structural studies of synthesized nanoclusters were carried out using field emission scanning electron microscopy and transmission electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, energy dispersive analysis by X-ray and Brunauer–Emmett–Teller. UV–vis diffuse reflectance spectroscopy determined the absorption edge and band gap energies of the prepared salt as a direct semiconductor. The optical energy gap was calculated equal to 2.35 eV. The cesium phosphomolybdate nanocluster exhibited high photodegradation ability for basic red 46 (BR46) under the simulated sunlight. The trapping experiments indicated that the photogenerated hydroxyl radicals and holes were the main responsible for the BR46 photodegradation. The presence of H₂O₂ significantly improved the photocatalytic activity of cesium phosphomolybdate. The Cs₃PMo₁₂2O₄₀ catalyst was very stable and easily separated from the reaction media for reuse.
dc.identifier.citationMolecular Catalysis, 2016; 415:96-103
dc.identifier.doi10.1016/j.molcata.2016.01.031
dc.identifier.issn1381-1169
dc.identifier.issn1873-314X
dc.identifier.urihttps://hdl.handle.net/11541.2/33915
dc.language.isoen
dc.publisherElsevier
dc.relation.fundingUniversity of Tabriz
dc.rightsCopyright 2016 Elsevier
dc.source.urihttps://doi.org/10.1016/j.molcata.2016.01.031
dc.subjectcesium phosphomolybdate nanoclusters
dc.subjectphotocatalysis
dc.subjectphotocatalytic degradation
dc.subjectpolyoxometalate
dc.titleKeggin type of cesium phosphomolybdate synthesized via solid-state reaction as an efficient catalyst for the photodegradation of a dye pollutant in aqueous phase
dc.typeJournal article
pubs.publication-statusPublished
ror.mmsid9916734430901831

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