Development of low-temperature SnO 2 –Au gas sensors for H 2 S detection in food freshness monitoring

Tin Oxide (SnO 2 ) is widely used in chemiresistive applications due to its favorable electrical properties, high reliability, and enhanced sensitivity towards various gases. However, its high operating temperature limits its application in energy-efficient and compact modules. This study presents a...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2024-10, Vol.12 (39), p.15895-15902
Main Authors: Park, Kee-Ryung, Kwon, Jinhyeong, Choi, Hyeunseok
Format: Article
Language:English
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Tin Oxide (SnO 2 ) is widely used in chemiresistive applications due to its favorable electrical properties, high reliability, and enhanced sensitivity towards various gases. However, its high operating temperature limits its application in energy-efficient and compact modules. This study presents a novel SnO 2 –Au 0.5 wt% chemiresistive gas sensor, optimized to operate at a low temperature of 200 °C, with high sensitivity (270.231, R a / R g ) for 10 ppm H 2 S gas. The sensor has been integrated into a handheld device to evaluate beef freshness by detecting H 2 S gas emissions. The results demonstrate the sensor's potential to revolutionize the food industry by providing a quick, reliable, and non-invasive method for assessing meat quality, ensuring food safety, and reducing waste.
ISSN:2050-7526
2050-7534
DOI:10.1039/D4TC02901A