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        Enhanced photocatalytic performance of novel self-assembled floral β-Ga2O3 nanorods

        K. Girija,S. Thirumalairajan,Astam K. Patra,D. Mangalaraj,N. Ponpandian,C. Viswanathan 한국물리학회 2013 Current Applied Physics Vol.13 No.4

        Self-assembled monoclinic phase of novel floral b-Ga2O3 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 w1 mm with surface area 40.8 m2/g confirmed from transmission electron microscope and BrunauereEmmetteTeller analysis. The band gap energy of 4.59 eV was evaluated from the UVevis diffuse reflectance spectrum and the photoluminescence spectrum displayed the characteristic luminescence and blue-light emission peaks. Further, the photocatalytic activity of novel b-Ga2O3 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 TiO2.

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