A non-invasive approach for H2S gas sensing under stimulated breathing conditions: a kag-MOF based gas sensor as a case study

Mostafa Zeama, Jiangtao Jia, Sheng Zhou, Murilo Calil Faleiros, Usman Yaqoob, Osama Shekhah, Khaled N. Salama*, Mohamed Eddaoudi*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Herein we report the deployment of kag-MOF as a sensing layer on a capacitive IDE sensor for detecting H2S at room temperature. Compared to other gases such as nitrogen dioxide, ammonia, carbon dioxide, and carbon monoxide, kag-MOF exhibited a unique and selective response to H2S, making it a promising candidate for H2S sensing applications. In particular, the kag-MOF layer demonstrated a particularly good response and selectivity to H2S in stimulated human breath and could detect concentrations as low as 500 ppb, even under humid conditions. These results clearly demonstrate that kag-MOF has immense potential as a candidate for H2S sensing, and its sensing behaviour opens possibilities for developing gas/vapor sensors that could potentially diagnose uremia at an early stage by monitoring H2S levels in the breath, giving it a potential application in the field of healthcare.

Original languageEnglish (US)
Pages (from-to)8432-8438
Number of pages7
JournalMaterials Advances
Volume5
Issue number21
DOIs
StatePublished - Jul 11 2024

ASJC Scopus subject areas

  • Chemistry (miscellaneous)
  • General Materials Science

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