| Title | Metalloporphyrins-functionalized carbon nanotube networked films for room-temperature VOCs sensing applications |
|---|---|
| Publication Type | Presentazione a Congresso |
| Year of Publication | 2009 |
| Authors | Penza, Michele, Rossi R., Alvisi Marco, Valerini D., Serra Emanuele, Paolesse R., Martinelli E., D'Amico A., and Di Natale C. |
| Conference Name | Procedia Chemistry |
| Conference Location | Lausanne |
| Keywords | Adsorption, Alumina substrates, Carbon films, Carbon nanotubes, Central metals, Chemical interactions, Chemical vapor deposition, Chemiresistors, cobalt, Electrical conductance, Enhanced sensitivity, Esters, Film growth, Functionalizations, Functionalized, Functionalized carbon nanotubes, Gas detectors, Gas sensors, Ketones, Langmuirs, Manganese, Manganese compounds, Metalloporphyrins, Nano-catalyst, P-type, Porphyrins, Room temperature, Sensing applications, Sensing characteristics, Sensing performance, Sensor networks, Sensor response, Sensors, Spray coating, Surface-modification, Tetraphenyl porphyrins, VOCs detection, Volatile organic compounds, Zinc |
| Abstract | Networked films of carbon nanotubes (CNTs) have been grown by Chemical Vapor Deposition (CVD) technology onto cost-effective alumina substrate, coated by Cobalt nanocatalyst for growing the CNTs. The sidewalls of the CNTs films have been functionalized by spray-coating with two different metalloporphyrins (MPP), consisting of a Tetraphenylporphyrin coordinated by a central metal of zinc (Zn-TPP) and manganese (Mn-TPP). The surface-modification of the CNTs with layers of Zn-TPP and Mn-TPP provides enhanced sensitivity and broad selectivity to volatile organic compounds (VOCs). The chemical interactions of these MPP-modified CNTs films with different tested VOCs (alcohols, esters, aromatics, ketones) have been investigated using the miniaturized two-pole chemiresistors technique. The sensor response in terms of p-type electrical conductance in the MPP-modified CNTs-chemiresistors exhibits a good sensing performance, at room temperature. The findings show a VOC adsorption occuring by sensing characteristics of response-concentration relationships as a combined Langmuir-Henry behaviour. © 2009. |
| URL | https://www.scopus.com/inward/record.uri?eid=2-s2.0-71549160019&doi=10.1016%2fj.proche.2009.07.243&partnerID=40&md5=82a4613c3943a6799909914dc8d9fa98 |
| DOI | 10.1016/j.proche.2009.07.243 |
| Citation Key | Penza2009975 |
