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Bismuth-Based Metal-Organic Framework As a Chemiresistive Sensor for Acetone Gas Detection

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Date 2023 Dec 8
PMID 38063737
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Abstract

Analyzing acetone in the exhaled breath as a biomarker has proved to be a non-invasive method to detect diabetes in humans with good accuracy. In this work, a Bi-gallate MOF doped into a chitosan (CS) matrix containing an ionic liquid (IL) was fabricated to detect acetone gas with a low detection limit of 10 ppm at an operating temperature of 60 °C and 5 V operating bias. The sensor recorded the highest response to acetone in comparison to other test gases, proving its high selectivity along with long-term stability and repeatability. The sensor also exhibited ultra-fast response and recovery times of 15 ± 0.25 s and 3 ± 0.1 s, respectively. Moreover, the sensor membrane also exhibited flexibility and ease of fabrication, making it ideal to be employed as a real-time breath analyzer.

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Zhang M, Han Y, Liu T, Jia H Sensors (Basel). 2024; 24(13).

PMID: 39001099 PMC: 11244280. DOI: 10.3390/s24134320.

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