ZIF-8-Based Surface Plasmon Resonance and Fabry-Pérot Sensors for Volatile Organic Compounds

Anna Estany-Macià*, Ignasi Fort-Grandas, Nirav Joshi, Winnie E Svendsen, Maria Dimaki, Albert Romano-Rodríguez*, Mauricio Moreno-Sereno*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

This work explores the use of ZIF-8, a metal-organic framework (MOF) material, for its use in the optical detection of volatile organic compounds (VOCs) in Fabry-Pérot and surface plasmon resonance (SPR)-based sensors. The experiments have been carried out with ethanol (EtOH) and show response times as low as 30 s under VOC-saturated atmospheres, and the estimated limit of detection is below 4000 ppm for both sensor types. The selectivity towards other VOCs is relatively poor, although the dynamics of adsorption/desorption differ for each VOC and could be used for selectivity purposes. Furthermore, the hydrophobicity of ZIF-8 has been confirmed and the fabricated sensors are insensitive to this compound, which is a very attractive result for its practical use in gas sensing devices.
Original languageEnglish
Article number4381
JournalSensors
Volume24
Issue number13
Number of pages13
ISSN1424-3210
DOIs
Publication statusPublished - 2024

Keywords

  • Gas ssensor
  • MOFs
  • ZIF-8
  • Optical detection
  • Fabry-Pérot interferometer
  • Surface plasmon resonance
  • VOCs
  • Ethanol

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