Effects of Gold Addition on Thermal Electronic Noses
Author Information
Author(s): Tonezzer Matteo, Ueda Taro, Torai Soichiro, Fujita Koki, Shimizu Yasuhiro, Hyodo Takeo
Primary Institution: Department of Chemical and Geological Sciences, University of Cagliari
Hypothesis
How does the addition of different amounts of gold affect the performance of thermal electronic noses based on porous Cu2O–SnO2 nanospheres?
Conclusion
The sensor with 4 wt% of gold achieved perfect classification of gases and an average concentration estimation error of about 16%.
Supporting Evidence
- The best performance was achieved with the sensor containing 4 wt% of gold.
- The sensor with 3 wt% of gold had the highest intrinsic selectivity.
- The electronic nose can classify gases with high accuracy using a single material at different temperatures.
- The mean absolute percentage error for gas concentration estimation was around 16%.
Takeaway
Adding gold to certain sensors helps them detect gases better, making them useful for things like checking air quality or food freshness.
Methodology
The study involved synthesizing porous Cu2O–SnO2 nanospheres with varying amounts of gold and testing their performance in detecting gases at different temperatures.
Limitations
The performance may vary with different gas concentrations and temperatures, and the study focused on a limited range of materials.
Digital Object Identifier (DOI)
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