| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1243225 | Talanta | 2016 | 6 Pages |
•An organically-functionalized gold nanoparticles gas sensor was developed.•The resistive gas sensor is selectively sensitive to formaldehyde.•Fluctuation enhanced sensing was applied to detect formaldehyde.
Detection of volatile organic compounds is a useful approach to non-invasive diagnosis of diseases through breath analysis. Our experimental study presents a newly developed prototype gas sensor, based on organically-functionalized gold nanoparticles, and results on formaldehyde detection using fluctuation-enhanced gas sensing. Formaldehyde was easily detected via intense fluctuations of the gas sensor's resistance, while the cross-influence of ethanol vapor (a confounding factor in exhaled breath, related to alcohol consumption) was negligible.
Graphical abstractAn organically-functionalized gold nanoparticles gas sensor is selectively sensitive to volatile organic compounds detected by fluctuation enhanced method (e.g. voltage fluctuations).Figure optionsDownload full-size imageDownload as PowerPoint slide
