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Enhanced sunlight photocatalytic activity of Ag3PO4 decorated novel combustion synthesis derived TiO2 nanobelts for dye and bacterial degradation

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  • Published: 01 July 2015
  • Volume 14, pages 1227–1237, (2015)
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Photochemical & Photobiological Sciences Aims and scope Submit manuscript
Enhanced sunlight photocatalytic activity of Ag3PO4 decorated novel combustion synthesis derived TiO2 nanobelts for dye and bacterial degradation
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  • Neerugatti KrishnaRao Eswar1,
  • Praveen Chandrashekarapura Ramamurthy1,2 &
  • Giridhar Madras3 

  • 204 Accesses

  • 52 Citations

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Abstract

This study demonstrates the synthesis of TiO2 nanobelts using solution combustion derived TiO2 with enhanced photocatalytic activity for dye degradation and bacterial inactivation. Hydrothermal treatment of combustion synthesized TiO2 resulted in unique partially etched TiO2 nanobelts and Ag3PO4 was decorated using the co-precipitation method. The catalyst particles were characterized using X-ray diffraction analysis, BET surface area analysis, diffuse reflectance and electron microscopy. The photocatalytic properties of the composites of Ag3PO4 with pristine combustion synthesized TiO2 and commercial TiO2 under sunlight were compared. Therefore the studies conducted proved that the novel Ag3PO4/unique combustion synthesis derived TiO2 nanobelt composites exhibited extended light absorption, better charge transfer mechanism and higher generation of hydroxyl and hole radicals. These properties resulted in enhanced photodegradation of dyes and bacteria when compared to the commercial TiO2 nanocomposite. These findings have important implications in designing new photocatalysts for water purification.

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Authors and Affiliations

  1. Centre for Nanoscience and Engineering, Indian Institute of Science, Bangalore-, 560012, India

    Neerugatti KrishnaRao Eswar & Praveen Chandrashekarapura Ramamurthy

  2. Department of Materials Engineering, Indian Institute of Science, Bangalore-, 560012, India

    Praveen Chandrashekarapura Ramamurthy

  3. Department of Chemical Engineering, Indian Institute of Science, Bangalore, 560012, India

    Giridhar Madras

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  1. Neerugatti KrishnaRao Eswar
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  2. Praveen Chandrashekarapura Ramamurthy
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  3. Giridhar Madras
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Correspondence to Giridhar Madras.

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Eswar, N.K., Ramamurthy, P.C. & Madras, G. Enhanced sunlight photocatalytic activity of Ag3PO4 decorated novel combustion synthesis derived TiO2 nanobelts for dye and bacterial degradation. Photochem Photobiol Sci 14, 1227–1237 (2015). https://doi.org/10.1039/c5pp00092k

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  • Received: 04 March 2015

  • Accepted: 20 May 2015

  • Published: 01 July 2015

  • Issue Date: July 2015

  • DOI: https://doi.org/10.1039/c5pp00092k

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