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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/044/0045

    • Keywords

       

      Washing; strain; gas sensor; hydrogen; palladium; nanoparticle.

    • Abstract

       

      Hydrogen sensor response of palladium (Pd) nanoparticles changes when the nanoparticles are washed with different solvents prior to device formation. This study presents the effect of washing Pd nanoparticles with distilled wateror ethanol on their hydrogen response. The change induced in the surface characteristics of the Pd nanoparticles after washing is analysed with the help of UV–Vis absorption spectroscopy and glancing angle X-ray diffraction (GAXRD)studies. The nature of strain in nanoparticles after washing is particularly analysed from GAXRD data to understand the hydrogen response mechanism. The performance of the nanoparticle-based devices in humid ambient was also studied and the results were correlated to the consequence of sample washing. A suitable sensing mechanism within the purview of Langmuir model is discussed to understand the role of washing of the palladium nanoparticle yield.

    • Author Affiliations

       

      POOJA BHARDWAJ1 PARTHA BIR BARMAN1 SURAJIT KUMAR HAZRA1

      1. Department of Physics and Materials Science, Jaypee University of Information Technology, Waknaghat, Solan 173234, India

    • Dates

       
      Published
      20 February 2021
      Manuscript received
      12 June 2020
      Accepted
      11 September 2020
      Final version published online
      20 February 2021

    • Supplementary Material

       

  • 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

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