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      https://www.ias.ac.in/article/fulltext/pram/090/04/0044

    • Keywords

       

      Hydrothermal method; structural properties; photocatalytic degradation; gas sensor

    • Abstract

       

      $TiO_{2}$ nanoparticles were synthesised by hydrothermal method. The degree of crystallinity and phase purity were confirmed from the Raman spectra and X-ray diffraction. By increasing the hydrothermal temperature,crystallinity and AC conductivity of the $TiO_{2}$ nanoparticles increase. Nitrogen adsorption–desorption measurements confirmed that the samples were mesoporous with an average pore diameter of 4.4–7.45 nm. Photocatalytic activity of $TiO_{2}$ nanoparticles was evaluated and the sample hydrothermally treated at 160$^\circ$C has the highest photocatalytic activity. In gas sensing measurements, sensitivity increases as a function of concentration and the response to ethanol vapour was better compared to other gases for the sample synthesised at 160$^\circ$C.

    • Author Affiliations

       

      M MALLIGAVATHY1 S IYYAPUSHPAM2 S T NISHANTHI3 D PATHINETTAM PADIYAN1

      1. Department of Physics, Manonmaniam Sundaranar University, Tirunelveli 627 012, India
      2. Department of Physics, Thanthai Hans Roever Arts and Science College, Perambalur 621 212, India
      3. Electrochemical Materials Division, Central Electro Chemical Research Institute, Karaikudi 630 003, India
    • Dates

       
  • Pramana – Journal of Physics | News

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