Trace Hydrogen Sulfide Sensing Inspired by Polyoxometalate-Mediated Aerobic Oxidation.

ABSTRACT: A high-performance chemiresistive gas sensor is described for the detection of hydrogen sulfide (H₂S), an acutely toxic and corrosive gas. The chemiresistor operates at room temperature with low power requirements potentially suitable for wearable sensors or for rapid in-field detection of H₂S in settings such as pipelines and wastewater treatment plants. Specifically, we report chemiresistors based on single-walled carbon nanotubes (SWCNTs) containing highly oxidizing platinum-polyoxometalate (Pt-POM) selectors. We show that by tuning the vanadium content and thereby the oxidation reactivity of the constituent POMs, an efficient chemiresistive sensor is obtained that is proposed to operate by modulating CNT doping during aerobic H₂S oxidation. The sensor s

SUBMITTER: Bezdek MJ 

PROVIDER: S-EPMC8461779 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature