• Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      Ethanol sensing; sol–gel method; zinc oxide-based sensor; graphene and copper doping.

    • Abstract


      Pure zinc oxide, graphene-, copper- and copper/graphene-doped zinc oxide samples were synthesized by the sol–gel technique. The sol–gel prepared samples have been studied by X-ray diffraction, field-emission scanning electron microscopy and Fourier transform infrared spectroscopy. The gas-sensing performance of the samples was examined through an electric circuit towards different vapours (i.e., ethanol, methanol, acetone and isopropanol). It was observed that the sensitivity was affected by graphene and copper. The main ethanol sensing features of the samples were measured and compared with each other. The sensitivity and the time of response and recovery of the sensing material were commonly improved after doping. Based on the results, the doped samples had a more acceptable status than the ZnO sample and particularly, the sample with both graphene and copper had a peculiar attitude due to sensitivity enhancement and response/recovery time reduction. The copper/graphene-doped zinc oxide can be a good replacement for a pure zinc oxide gas sensor.

    • Author Affiliations



      1. Nano Research Lab, Lahijan Branch, Islamic Azad University, P.O. Box 1616, Lahijan, Iran
    • Dates

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2022-2023 Indian Academy of Sciences, Bengaluru.