Quantitative fluctuation-enhanced sensing in amperometric NO2 sensors

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F15%3A43923214" target="_blank" >RIV/49777513:23220/15:43923214 - isvavai.cz</a>
Alternative codes found
RIV/00216275:25310/14:39898561 RIV/00216305:26220/15:PU114494
Result on the web
<a href="http://www.sciencedirect.com/science/article/pii/S0301010414002900" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0301010414002900</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.chemphys.2014.10.021" target="_blank" >10.1016/j.chemphys.2014.10.021</a>

Result language
angličtina
Original language name
Quantitative fluctuation-enhanced sensing in amperometric NO2 sensors
Original language description
Nitrogen dioxide represents threat to human health even at low concentrations. A new amperometric sensor with three-electrode topology (platinum/solid polymer electrolytes/carbon) was developed to overcome limitations of standard solid NO2 sensors based on inorganic materials. The paper aims to the study of fluctuation phenomena in amperometric sensor and presents preparation technology. The sensor has been exposed to NO2 concentration from 0 to 3 ppm. Experimental results show that thermal noise is only apparent for zero concentration. For higher NO2 concentrations, adsorption-desorption (A-D) noise and diffusion noise become main components of current fluctuations, and the noise spectra exhibit Lorentzian-like shape. The spectral density of current noise at frequency 0.2 Hz depends linearly on NO2 concentration. This linear behavior can be described by adsorption-desorption model for the interaction for two reservoirs. Thus, considering adsorption-desorption noise as a dominant noise source, the noise model is introduced based on Langmuir theory.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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