News Column

Reports from Birla Institute of Technology and Science Provide New Insights into Photocatalytics

June 4, 2014

By a News Reporter-Staff News Editor at Electronics Newsweekly -- Current study results on Photocatalytics have been published. According to news originating from Rajasthan, India, by VerticalNews correspondents, research stated, "The present paper reports the development of semiconductor thin film by drop-casting Bi2O3 particles, prepared through chemical bath method using Bi(NO3)(3) as a precursor, followed by annealing at 600 degrees C. Band gap energy of 2.9 eV as calculated from the edge of the absorption spectra, indicates near visible absorptivity of the materials. Activity of the materials has been tested through linear sweep voltammetry under chopped illumination in 0.1 M Na2SO4 solution for water oxidation and in 0.1 M Na2SO3 solution for sacrificial oxidation."

Our news journalists obtained a quote from the research from the Birla Institute of Technology and Science, "Highest photo-current density of 320 mu Acm(-2) has been measured for water oxidation reaction at 0.8 V vs. Ag/AgCl, under illumination of 35mWcm(-2). Electrochemical impedance and action spectra suggest significant photon to current conversion efficiencies of the material under UV-vis as well as for visible illumination."

According to the news editors, the research concluded: "The efficacy of the semiconductor particles for decoloration of Rhodamine-B dye has been carried out spectrophotometrically, and it is observed that, within 40mins of exposure to light, the color of the dye faded significantly in presence of the photocatalyst."

For more information on this research see: Photocatalytic activity of Bi2O3 Nanocrystalline Semiconductor developed via Chemical-bath Synthesis. Electrochimica Acta, 2014;123():494-500. Electrochimica Acta can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England.

The news correspondents report that additional information may be obtained from P. Hajra, Birla Inst Technol & Sci, Dept. of Chem, Pilani, Rajasthan, India. Additional authors for this research include S. Shyamal, H. Mandal, P. Fageria, S. Pande and C. Bhattacharya.

Keywords for this news article include: Asia, India, Rajasthan, Electronics, Photocatalyst, Semiconductor, Nanotechnology, Nanocrystalline, Emerging Technologies

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Source: Electronics Newsweekly

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