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Issue 99, 2014
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Synthesis and photocatalytic performance of quasi-fibrous ZnO

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Abstract

The combustion of oxidizer zinc nitrate and fuel oxalic acid results in quasi-fibrous zinc oxide. The processing parameters including oxidizer to fuel ratio, time and temperature were optimized for the resultant crystal structure and morphology. Pure hexagonal phase formation does not depend on the fuel ratio, but a stoichiometric ratio of oxidizer to fuel at 450 °C and 30 min results in highly crystalline ZnO with 3 μm length and 0.5 μm width. This quasi-fiber originates from partial fusion of near spherical, ∼60 nm particles during the rapid rate of reaction in the combustion process. Transmission electron microscopic analysis confirms the anisotropic primary particle orientation and pore distribution within the developed quasi-fibrous particles. The degradation of methyl orange was assessed by degrading the dye in the presence of the synthesized ZnO (2.95 eV) under both UV and visible light. Quasi-fibrous zinc oxide exhibits effective photocatalytic efficiency under visible light irradiation.

Graphical abstract: Synthesis and photocatalytic performance of quasi-fibrous ZnO

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Publication details

The article was received on 28 Aug 2014, accepted on 22 Oct 2014 and first published on 23 Oct 2014


Article type: Paper
DOI: 10.1039/C4RA09376C
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Citation: RSC Adv., 2014,4, 55807-55814
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    Synthesis and photocatalytic performance of quasi-fibrous ZnO

    S. Adhikari, D. Sarkar and G. Madras, RSC Adv., 2014, 4, 55807
    DOI: 10.1039/C4RA09376C

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