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Nickel Manganese Oxide Nanoparticles Based Humidity Sensors

  • Yasir Farooq
  • S. Fareed
  • M. A. RafiqEmail author
  • F. Sher
Article
  • 7 Downloads

Abstract

In the present work (0–20%) Mn doped NiO, (10–20%) Ni doped Mn3O4, and composite NiO/Mn3O4 nanoparticles were synthesized using the solid state reaction method. The purity of the nanoparticles was confirmed using x-ray diffraction (XRD) study. Scanning electron microscope (SEM) images confirmed the formation of irregularly shaped nanoparticles with an average diameter of 50–100 nm. Then humidity sensors based on these nanoparticles were fabricated and tested. The doping up to certain content enhanced the sensitivity, and the maximum sensitivity of 70% was observed for 10% Ni doped Mn3O4. These sensors exhibited reasonably fast response and recovery times and were better or comparable to those of similar materials. Therefore nickel/manganese oxide nanoparticles are suitable for use in fabrication of humidity sensors.

Keywords

Nickel oxide manganese oxide humidity sensor nanoparticles solid state reaction method 

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Notes

Acknowledgments

M. A. Rafiq acknowledges the financial support from the Higher Education Commission of Pakistan under the National Research Program for Universities (Project No. 3662).

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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  1. 1.Micro and Nano Devices Group, Department of Metallurgy and Materials EngineeringPakistan Institute of Engineering and Applied Sciences (PIEAS)P.O. Nilore, IslamabadPakistan
  2. 2.Department of Physics and Applied MathematicsPakistan Institute of Engineering and Applied Sciences (PIEAS)P.O. Nilore, IslamabadPakistan
  3. 3.Department of Chemistry, SSELahore University of Management SciencesLahorePakistan

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