Current Applied Physics

Korean Physical Society (한국물리학회)
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Enhanced photocatalytic performance of novel self-assembled floral ${\beta}-Ga_2O_3$ nanorods

Girija, K.;Thirumalairajan, S.;Patra, Astam K.;Mangalaraj, D.;Ponpandian, N.;Viswanathan, C.

  • Published : 20130600
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Abstract

Self-assembled monoclinic phase of novel floral ${\beta}-Ga_2O_3$ nanorods were prepared using reflux condensation method by controlled precipitation of metal cations with urea. The structural and morphological properties were investigated by X-ray powder diffraction, Raman spectroscopy and Scanning electron microscope. Single-crystalline nanorods with size 100 nm involved in the selfassembly process to form flowery pattern have diameter ${\sim}1{\mu}m$ with surface area $40.8m^2/g$ confirmed from transmission electron microscope and Brunauer-Emmett-Teller analysis. The band gap energy of 4.59 eV was evaluated from the UV-vis diffuse reflectance spectrum and the photoluminescence spectrum displayed the characteristic luminescence and blue-light emission peaks. Further, the photocatalytic activity of novel ${\beta}-Ga_2O_3$ floral nanorods towards the photodegradation of Rhodamine B in aqueous solution under ultra violet light irradiation showed better photocatalytic activity than the commercial photocatalyst Degussa P25 $TiO_2$.

Keywords

References

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