Low Temperature Working Carbon Monoxide (CO) Sensor Based on Au/SnO2 Core-Shell Nanoparticles
Summary
SnO2-based CO sensors are widely used in domestic and industrial applications and belong to the class of metal-oxide semiconductor (MOS) sensors. This class of sensor is easy to manufacture and miniaturize, and sensitivity and selectivity are both tunable. Also, electrochemical measurements are easily realized, require simple electronics, and integration into electronic devices is straightforward. However, since sufficient oxygen vacancies are needed for conduction, MOS sensors typically operate at elevated temperatures, which requires energy consumption and reduces sensor lifetimes. Researchers at The Ohio State University have developed a MOS CO sensor based on Au/SnO2 core-shell nanoparticles that is operable in the 25 to 150 deg. C range. Sensor response is highly reproducible and recovery is fast in this temperature range, and high sensitivity was exhibited.
Main Advantages of Technical Approach
- A MOS electrochemical CO sensor that operates in the 25 to 150 deg. C range!
- Increased safety and sensor longevity as no heating device is needed
- Greatly reduced energy consumption
- Extremely low cost and easy manufacturing
- Simple electronics for easy device integration
Market Potential
- Home, office, and industrial CO monitoring for occupant and fire safety
- Low temperature and low power requirement makes it compatible with mobile devices
Inventor(s)
Prabir DuttaYeon Tae Yu
Contact Information
Demian Phillipsphillips.631@osu.edu | 614-688-5744
Technology Licensing & Commercialization
The Ohio State University
1216 Kinnear Road
Columbus, OH 43212-1154
