| Title | Metalloporphyrins-modified carbon nanotubes networked films-based chemical sensors for enhanced gas sensitivity |
|---|---|
| Publication Type | Articolo su Rivista peer-reviewed |
| Year of Publication | 2010 |
| Authors | Penza, Michele, Rossi R., Alvisi Marco, Signore M.A., Serra Emanuele, Paolesse R., D'Amico A., and Di Natale C. |
| Journal | Sensors and Actuators, B: Chemical |
| Volume | 144 |
| Pagination | 387-394 |
| ISSN | 09254005 |
| Keywords | Adsorption, Adsorption properties, Carbon films, Carbon nanotubes, Chemical sensors, CNT films, Complex samples, Electrical resistances, Fingerprinting analysis, Functional units, Functionalizations, Gas detectors, Gas nanosensor, Gas sensing, Gas sensitivity, Gas sensors, Gases, Ketones, Metalloporphyrins, Modified carbon, Modified film, Porphyrins, Principal component analysis, Room temperature, Sensor arrays, Sensor signals, Surface Functionalization, VOC detection, Volatile compounds, Volatile organic compounds |
| Abstract | In this paper the effect of the surface functionalization of the carbon nanotubes (CNT) networked films with a metalloporphyrins layer is investigated for gas sensing. Modified film exhibits an increased sensitivity of the electrical resistance towards the concentrations of common volatile compounds (alcohols, amines, aromatic and ketones), at room temperature. Furthermore, a part of the adsorption properties of the functional units is transferred to the sensor signal and, as a consequence, the selectivity of the sensor is also modified. Principal Component Analysis (PCA) demonstrates that the functionalization provides enough selectivity change to turn a triplicate of the same CNT film into an effective sensor array capable of the compounds recognition. These findings are then promising for the development of arrays of CNT-based gas nanosensors with broad selectivities for fingerprinting analysis of complex samples. © 2009 Elsevier B.V. All rights reserved. |
| Notes | cited By 33 |
| URL | https://www.scopus.com/inward/record.uri?eid=2-s2.0-75749095236&doi=10.1016%2fj.snb.2008.12.060&partnerID=40&md5=bf91e3b09c90c9a87ca25ce422f85cc1 |
| DOI | 10.1016/j.snb.2008.12.060 |
| Citation Key | Penza2010387 |
