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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/045/0068

    • Keywords

       

      SILAR method; XRD; TEM; porous network-like structure; ethanol sensor.

    • Abstract

       

      SnO$_2$–ZnO nanocomposite is synthesized at room temperature using the successive ionic layer adsorption and reaction (SILAR) method. The X-ray diffraction (XRD) patterns of annealed films confirms the formation of SnO$_2$–ZnO nanocomposite. Scanning electron microscopy depicts the porous agglomerated nanoparticle network-like structure of the SnO$_2$–ZnO nanocomposite. On the other hand, ZnO has a cauliflower shape, while SnO$_2$ has a distributed agglomerated nanoparticle-like morphology. Energy dispersive X-ray spectroscopy (EDS) confirms the elemental compositions of composite films. The reducing gases such as liquefied petroleum gas, ethanol, hydrogen sulphide and ammonia weredetected using a SnO$_2$–ZnO nanocomposite sensor. Ethanol has a maximum sensitivity of 56.93% at a temperature of 275°C and a concentration of 24 ppm. In addition, as compared to a bare sensor, a composite sensor responds quickly. The n–n heterojunction at intergrain boundaries is responsible for better composite performance over bare sensors. Even at low gas concentrations, the SnO$_2$–ZnO nanocomposite sensor is found selective towards ethanol.

    • Author Affiliations

       

      K S PAKHARE1 2 B M SARGAR1 S S POTDAR3 U M PATIL4 R D MANE5

      1. DIST-FIST Sponsored Material Research Laboratory, Department of Chemistry, Jaysingpur College, Kolhapur 416101, India
      2. Department of Chemistry, Anandibai Raorane Arts, Commerce and Science College, Sindhudurg 416810, India
      3. Department of Physics, Sanjeevan Engineering and Technology Institute, Kolhapur 416201, India
      4. DST-INSPIRE Faculty, D. Y. Patil University, Kolhapur 416006, India
      5. Department of Physics, Jaysingpur College, Kolhapur 416101, India

    • Dates

       
      Published
      7 April 2022
      Manuscript received
      30 August 2021
      Accepted
      5 December 2021
      Final version published online
      7 April 2022

  • Bulletin of Materials Science | News

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    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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