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We report the fabrication of a novel metal-organic framework (MOF)-polymer mixed-matrix flexible membrane for the detection of hydrogen sulfide (H 2 S) gas at room temperature. This high-performance gas sensor is based on MOF-5 microparticles embedded on a conductivity-controlled chitosan (CS) organic membrane. The conductivity of the organic membrane is controlled by blending it with a glycerol ionic liquid (IL) at different concentrations. The sensor showed a remarkable detection sensitivity for H 2 S gas at a concentrations level as low as 1 ppm at room temperature. The MOF-5/CS/IL gas sensor demonstrates a highly desirable detection selectivity, fast response time (&lt;8 s), recovery time of less than 30 s, and outstanding sensing stability averaging at 97% detection with 50 ppm of H 2 S gas. This composite having high sensitivity, low-power consumption, and flexibility holds great promise for addressing current challenges pertinent to environmental sustainability.

A Highly Sensitive and Flexible Metal–Organic Framework Polymer-Based H2S Gas Sensor

A Highly Sensitive and Flexible Metal–Organic Framework Polymer-Based H₂S Gas Sensor