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Band-gap engineering in novel delafossite-type multicomponent oxides for photocatalytic degradation of methylene blue

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dc.contributor.authorKarati, Anirudha
dc.contributor.authorParida, Tripta
dc.contributor.authorGupta, Jyoti
dc.contributor.authorAdigilli, Harish Kumar
dc.contributor.authorBorse, Pramod H.
dc.contributor.authorJoardar, Joydip
dc.date.accessioned2023-09-19T14:50:42Z
dc.date.available2023-09-19T14:50:42Z
dc.date.issued01-05-2021
dc.description.abstractA series of novel mixed oxides with honeycomb layered structure viz. delafossite-type Na3M2SbO6 (where M = Cu; Ni; Cu, Ni; Cu, Ni, Co; Cu, Ni Co, Fe; Cu, Ni Co, Fe, Mn) were synthesized by a facile method. The synthesis involved heating of the metal precursors at 1100 °C followed by air quenching. The structure was analogous to that of Na3Ni2SbO6 (space group: C2/m). The effect of increased entropy on the Jahn-Teller distortion effect, as previously reported in M = Cu system, was evident from the X-ray diffraction (XRD)/Rietveld structural analysis. The as-synthesized oxides showed photocatalytic activity as confirmed by the degradation of methylene blue. This was correlated to a drop in the optical band-gap from 2.41 to 1.96 eV on increasing the number of elements as well as its effect on the band energies are proposed here.
dc.identifier.doi10.1016/j.materresbull.2020.111181
dc.identifier.issn255408
dc.identifier.scopus2-s2.0-85098229922
dc.identifier.urihttps://apicris.irins.org/handle/IITM2023/31155
dc.relation.ispartofseriesMaterials Research Bulletin
dc.sourceMaterials Research Bulletin
dc.subjectOptical absorption
dc.subjectOxides
dc.subjectTransition metals
dc.titleBand-gap engineering in novel delafossite-type multicomponent oxides for photocatalytic degradation of methylene blue
dc.typeJournal
dspace.entity.typePublication
oaire.citation.volume137
person.affiliation.cityHyderabad
person.affiliation.cityChennai
person.affiliation.cityWarangal
person.affiliation.id60076056
person.affiliation.id60025757
person.affiliation.id60007886
person.affiliation.nameInternational Advanced Research Centre for Powder Metallurgy and New Materials, Hyderabad
person.affiliation.nameIndian Institute of Technology Madras
person.affiliation.nameNational Institute of Technology, Warangal
person.identifier.scopus-author-id57194570176
person.identifier.scopus-author-id57194212620
person.identifier.scopus-author-id57220713048
person.identifier.scopus-author-id57212020591
person.identifier.scopus-author-id6602932803
person.identifier.scopus-author-id6602938143
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