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Penza M.,Technical Unit for Materials Technologies
Lecture Notes in Electrical Engineering | Year: 2014

This is a short overview of the COST Action TD1105 EuNetAir - European Network on New Sensing Technologies for Air-Pollution Control and Environmental Sustainability - funded in the framework European Cooperation in the Field of Scientific and Technical Research (COST) during the period 2012-2016. The main objective of the concerted action is to develop new sensing technologies for air-quality control at integrated and multidisciplinary scale by coordinated research on nanomaterials, sensor systems, air-quality modeling, and standardized methods for supporting environmental sustainability with a special focus on small and medium enterprises. © 2014 Springer International Publishing Switzerland. Source

Ferrara M.C.,Technical Unit for Materials Technologies | Piscopiello E.,Technical Unit for Materials Technologies | Laera A.M.,Technical Unit for Materials Technologies | Pilloni L.,ENEA | And 2 more authors.
Journal of Sol-Gel Science and Technology | Year: 2011

Polycrystalline, close-packed, homogeneous nanostructured ceria thin films were prepared by sol-gel process via dip-coating technique on soda-lime glass and (100)-oriented Si substrates. To produce the films, a sol was prepared using, as precursor, a home made cerium secbutoxide dissolved in secondary butanol. The chemical composition, the microstructural/morphological characteristics and the optical properties of the coatings were investigated in detail. The experimental results clearly demonstrate that the ceria films are nanocrystalline (CeO 2, cubic phase Fm̄3m) with an average grain size of about 2-3 nm for the samples grown on glass and of about 4-5 nm for the samples grown on silicon. The analyses of ceria layers grown on silicon show that the ceria coatings are free from organic residues and that a Si-oxide layer is formed at the film/substrate interface. The optical results evidence a red shift of the energy gap of about 0.5 eV that can be ascribed to conversion of relevant Ce 4+ sites to Ce 3+ sites and a consequent creation of oxygen vacancy at the surface of the ceria grains. © 2011 Springer Science+Business Media, LLC. Source

Suriano D.,Technical Unit for Materials Technologies | Cassano G.,Technical Unit for Materials Technologies | Penza M.,Technical Unit for Materials Technologies
Lecture Notes in Electrical Engineering | Year: 2014

In ENEA, at Brindisi Research Center, a portable gas sensor system called NASUS IV based on solid-state gas sensors was built. This system is the last result of our technology researches in the area of tiny and portable sensor systems for air quality control. The main goal of the system designed and built in our laboratory is the development of a handheld device for detecting some pollutant gases such as CO, SO2, NO2, and H2S. In order to test this machine in our laboratory under conditions similar to real situations, we employed a wide-volume gas chamber provided by an input and an output pipe. We put NASUS IV in the previously mentioned chamber, and we performed several tests with different kind of targeted gases. Future works concern about the employment of the NASUS IV in real environment by performing an experimental campaign in collaboration with the public regional environmental protection agency (ARPA-Puglia), which will provide in-field fixed stations in order to compare the performance of our machine with the conventional gas analyzers. © 2014 Springer International Publishing Switzerland. Source

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