Nanomaterials, Journal Year: 2024, Volume and Issue: 14(21), P. 1725 - 1725

Published: Oct. 29, 2024

Hydrogen sulfide (H2S) is a highly toxic and corrosive gas commonly found in industrial emissions natural processing, posing serious risks to human health environmental safety even at low concentrations. The early detection of H2S therefore critical for preventing accidents ensuring compliance with regulations. This study presents the development porous ZnO/SnO2-nanocomposite sensors tailored ultrasensitive sub-ppb levels. Utilizing screen-printing method, we fabricated five different sensor compositions—ranging from pure SnO2 ZnO—and characterized their structural morphological properties through X-ray diffraction (XRD) scanning electron microscopy (SEM). Among these, SnO2/ZnO composition-weight ratio 3:4 demonstrated highest response 325 °C, achieving limit 0.14 ppb. was evaluated detecting concentrations ranging 5 ppb 500 under dry, humid air N2 conditions. relative concentration error carefully calculated based on analytical sensitivity, confirming sensor’s precision measuring Our findings underscore significant advantages mixture nanocomposites enhancing offering promising applications monitoring safety. research paves way advancement effective capable operating diverse conditions high accuracy.

Language: Английский