Design, fabrication, and characterization of portable gas sensors based on spinel ferrite nanoparticles embedded in organic membranes

Ayah F.S. Abu-Hani, Saleh T. Mahmoud, Falah Awwad, Ahmad I. Ayesh

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)

Abstract

Two types of H2S gas sensors were fabricated based on zinc and copper ferrites’ nanoparticles (NPs) in organic polymer. The ferrite nanoparticles were synthesized using the co-precipitation method. Polymer solutions of poly-vinyl-alcohol (PVA) and glycerol ionic liquid (IL) were prepared and doped with the ferrite NPs, and then a solution casting method was used to convert these solutions into membranes. These membranes (PVA + IL + ZnFe2O4and PVA + IL + CuFe2O4) were tested against H2S gas with reference to time at different temperatures and H2S gas concentrations. Their conductance response showed high sensitivity towards H2S gas at low temperature of 40 °C, and H2S concentrations of 10 ppm and 25 ppm for ZnFe2O4and CuFe2O4based sensors, respectively. Both sensors showed a fast response time around 20 s. Moreover, ZnFe2O4NPs based sensor showed more reversible behavior compared with CuFe2O4NPs based sensor, and both sensors were selective toward H2S gas. Overall, the sensors were easy and cheap to manufacture, thus, they have potential to be used in industrial fields.

Original languageEnglish
Pages (from-to)1179-1187
Number of pages9
JournalSensors and Actuators, B: Chemical
Volume241
DOIs
Publication statusPublished - 2017

Keywords

  • CuFeOnanoparticles
  • HS sensor
  • Organic polymer
  • ZnFeOnanoparticles

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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