K.D. Mandal

Indian Institute of Technology (Banaras Hindu University), India

Title: Efficient Photocatalytic Properties of Bismuth based Selenite Synthesized by Chemical method

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Biography

Abstract

Bi36Fe2O57 (BFO) polycrystalline ceramic was synthesized by economical chemical method.

The single phase formation of BFO ceramic was confirmed by powder X-ray diffraction studies. Nanosized formation of BFO ceramics estbalised by XRD and TEM analysis.. The photodegradation of Rhodamine B (RhB) was performed to evaluate the photocatalytic activity of the synthesized material. The experiment was done in a homemade photocatalytic chamber using four cool white LED bulbs. Diffuse reflectance spectra of nanoparticle showing strong light absorption in the UV-Visible region as compared to NIR region. It is observed that the Bi25FeO40 photocatalyst exhibited higher catalytic activity for the degradation of methylene blue (MB) under visible-light irradiation due to low band gap (1.8eV) of the material. The oxidation state of Fe(III) was confirmed by XPS studies in the BFO ceramic. The Psedocapcetive nature of BFO ceramic was observed by cyclic voltammetry. The dielectric constant of BFO ceramic was found 300 at 1 KHz at 300 K.