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SnO2based nanostructures for gas sensor application: a review
Goda Vasantharao1, Jay Chandra Dhar1
1Department of Electronics and Communication Engineering, National Institute of Technology, Chumukedima 797103, Nagaland, India.
Nanotechnology
|November 4, 2025
Summary
Rising atmospheric pollution necessitates effective monitoring. Tin dioxide (SnO2) metal oxide semiconductor gas sensors offer a promising solution for detecting harmful gases due to their stability and cost-effectiveness.
Area of Science:
- Environmental Science
- Materials Science
- Chemical Engineering
Background:
- Increasing industrialization and urbanization lead to elevated atmospheric pollution.
- Harmful gases like nitrogen dioxide (NO2) and ammonia (NH3) pose risks to human health.
- Gas sensors are vital for monitoring environmental pollutant levels.
Purpose of the Study:
- To review the application of tin dioxide (SnO2) in gas sensing.
- To summarize synthesis methods and modifications of SnO2 for gas detection.
- To identify future research directions for SnO2-based gas sensors.
Main Methods:
- Literature review of SnO2 gas sensor research.
- Analysis of synthesis techniques for structural and morphological modifications.
- Evaluation of SnO2 performance in detecting various toxic gases.
Main Results:
- SnO2 is a widely used material for detecting toxic gases due to its excellent properties.
- Various synthesis methods and modifications enhance SnO2 gas sensing capabilities.
- SnO2 sensors demonstrate good stability, reliability, and fast response times.
Conclusions:
- SnO2-based gas sensors are effective for monitoring hazardous atmospheric pollutants.
- Further research into synthesis and modifications can optimize sensor performance.
- SnO2 sensors represent a cost-effective and reliable solution for environmental safety.
