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Microchimica Acta

, 186:62 | Cite as

Resistive room temperature LPG sensor based on a graphene/CdO nanocomposite

  • Solleti Goutham
  • Naradala Jayarambabu
  • Chinta Sandeep
  • Kishor Kumar Sadasivuni
  • Devarai Santhosh Kumar
  • Kalagadda Venkateswara Rao
Original Paper
  • 15 Downloads

Abstract

The authors decribe an ultra-sensitive, room temperature, flexible transparent LPG sensor based on the use of a CdO/graphene nanocomposite. The graphene prevents the accumulation of CdO, enhances the surface area, and acts as a gas sensing material. FESEM images show a uniform decoration of CdO nanoparticles on graphene. The CdO/graphene composite was deposited as a film on interdigitated electrodes (IDEs) which then were used for chemiresistive sensing of liquid petroleum gas (LPG) by using a four probe technique. A Resistivity decreases significantly upon exposure to a LPG. The electrical resistance measurement at a constant bias voltage of 0.5 V. The sensor of type CdO/graphene (1 wt.%) exhibits a sensitivity of 600 ppm of LPG at 27 °C. It is a highly selective, stable and sensitive to low concentration of LPG even at room temperature.

Graphical abstract

The gas sensing properties of CdO/graphene nanocomposite with different weight percentages were studied using chemiresistive technique.

Keywords

Liquefied petroleum gas Graphene CdO Gas sensor Flexible 

Notes

Acknowledgments

The author (KVR) is thankful to Science and Engineering Research Board (SERB) - Department of Science and Technology (DST), Government of India, [Project No. SB/EMEQ-183/2013] for the generous financial support.

Compliance with ethical standards

The author(s) declare that they have no competing interests.

Supplementary material

604_2018_3170_MOESM1_ESM.docx (444 kb)
ESM 1 (DOCX 444 kb)

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Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2019

Authors and Affiliations

  • Solleti Goutham
    • 1
  • Naradala Jayarambabu
    • 1
  • Chinta Sandeep
    • 2
  • Kishor Kumar Sadasivuni
    • 3
  • Devarai Santhosh Kumar
    • 4
  • Kalagadda Venkateswara Rao
    • 1
  1. 1.Nano Electronics Laboratory, Centre for Nano Science and TechnologyJNT University HyderabadKukatpallyIndia
  2. 2.Department of Mechanical EngineeringInstitute of Aeronautical EngineeringHyderabadIndia
  3. 3.Department of Mechanical and Industrial EngineeringQatar UniversityDohaQatar
  4. 4.Department of Chemical EngineeringIIT-HyderabadHyderabadIndia

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