Magnetically separable core-shell ZnFe2O4@ZnO nanoparticles for visible light photodegradation of methyl orange

Suresh D. Kulkarni, Sagar Kumbar, Samvit G. Menon, K. S. Choudhari, C. Santhosh

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Visible light photodegradation of aqueous methyl orange using magnetically separable core-shell ZnFe2O4@ZnO nanoparticles is reported. A combination of low temperature (190 °C) microwave synthesis and hydrothermal method were used to prepare phase pure material with excellent yield (95%). The magnetic separability, surface area of 41 m2/g and visible light absorption make ZnFe2O4@ZnO nanoparticles a good solar photocatalyst. ZnFe2O4@ZnO displayed greater UV photocatalytic efficiency than ZnO owing to the generation of large number of electron-hole pairs. Visible light photodegradation of MO using ZnFe2O4@ZnO nanoparticles is reported for the first time. Higher first order rate constants under both UV and visible light for core-shell nanoparticles suggested their superiority over its individual oxides. The ZnFe2O4@ZnO showed excellent reusability with high photocatalytic efficiencies suggesting its suitability for solar photocatalytic applications.

Original languageEnglish
Pages (from-to)70-77
Number of pages8
JournalMaterials Research Bulletin
Volume77
DOIs
Publication statusPublished - 01-05-2016

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Photodegradation
Nanoparticles
nanoparticles
Reusability
Photocatalysts
electromagnetic absorption
Oxides
Light absorption
Rate constants
Microwaves
microwaves
oxides
methyl orange
Electrons
synthesis
Temperature

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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abstract = "Visible light photodegradation of aqueous methyl orange using magnetically separable core-shell ZnFe2O4@ZnO nanoparticles is reported. A combination of low temperature (190 °C) microwave synthesis and hydrothermal method were used to prepare phase pure material with excellent yield (95{\%}). The magnetic separability, surface area of 41 m2/g and visible light absorption make ZnFe2O4@ZnO nanoparticles a good solar photocatalyst. ZnFe2O4@ZnO displayed greater UV photocatalytic efficiency than ZnO owing to the generation of large number of electron-hole pairs. Visible light photodegradation of MO using ZnFe2O4@ZnO nanoparticles is reported for the first time. Higher first order rate constants under both UV and visible light for core-shell nanoparticles suggested their superiority over its individual oxides. The ZnFe2O4@ZnO showed excellent reusability with high photocatalytic efficiencies suggesting its suitability for solar photocatalytic applications.",
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AU - Kulkarni, Suresh D.

AU - Kumbar, Sagar

AU - Menon, Samvit G.

AU - Choudhari, K. S.

AU - Santhosh, C.

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