Loading...
Please wait, while we are loading the content...
Similar Documents
Nanomaterials and their Composites for Chemical Sensors Isoprene detection with Ti-doped ZnO nanoparticles
| Content Provider | Semantic Scholar |
|---|---|
| Author | Cerrejon, D. Klein Güntner, Andreas T. Pineau, Nicolay J. Chie, D. Krumeich, Frank Pratsinis, Sotiris E. |
| Copyright Year | 2018 |
| Abstract | Exhaled isoprene could enable non-invasive real-time monitoring of cholesterol-lowering therapies. Here, we report an isoprene-selective sensor at high relative humidity (RH). It is made of nanostructured, chemo-resistive Ti-doped ZnO nanoparticles produced by flame spray pyrolysis (FSP) and directly deposited onto sensor substrates forming highly porous films. The constituent particles consist of stable Ti-doped ZnO solid solutions for Ti levels up to 10 mol%. Ti doping strongly enhance the isoprene sensitivity (>15 times higher than pure ZnO) and turn ZnO isoprene-selective, while also improving its thermal stability. In fact, at an optimal Ti content of 2.5 mol%, this sensor shows superior isoprene responses compared to acetone, NH3 and ethanol at 90% RH. Most notably, breath-relevant isoprene concentrations are detected accurately down to 5 ppb. As a result, an inexpensive isoprene detector has been developed that could be easily incorporated into a portable breath analyzer for noninvasive monitoring of metabolic disorders (e.g. cholesterol). |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.ama-science.org/proceedings/download/ZmZjBN== |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
