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Laboratories of Biophysics and Nanobiotechnology, Department of Medical Science, University of Genova, Via Pastore 3, Genova 16132, Italy


Nanoworld Institute, Fondazione EL.B.A. Nicolini, Largo Redaelli 7, Pradalunga, Bergamo 24100, Italy


Author to whom correspondence should be addressed.

Abstract Homogeneous matrices of calcium oxide CaO were prepared by mixing this material with polyethylene glycol PEG acting as malleable inert support in order to obtain processable composites. Preliminary tests were carried out to assess the best concentration of CaO in the composite, individuated in the CaO-PEG weight ratio of 1-4. Experimental data highlighted that the composite was able to selectively detect carbon dioxide CO2 via a nanogravimetric method by performing the experiments inside an atmosphere-controlled chamber filled with CO2. Furthermore, the composite material showed a linear absorption of CO2 as a function of the gas concentration inside the atmosphere-controlled chamber, thus paving the way for the possible use of these matrices for applications in the field of sensor devices for long-term evaluation of accumulated environmental CO2. View Full-Text

Keywords: sensors; carbon dioxide; calcium oxide; composites; nanogravimetry sensors; carbon dioxide; calcium oxide; composites; nanogravimetry

Autor: Tercio Bezerra Correia Terencio 1, Valter Bavastrello 1 and Claudio Nicolini 1,2,*



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