The present work shows the synthesis of a graphene-based nanocomposite with titania nanoparticles through a simple one-step, microwave assisted method. The GR/TiO2 nanocomposite was used for the fabrication of a chemiresistor device and characterized towards oxidizing and reducing gases under controlled environment. The results show how the addiction of titania nanoparticles to graphene nanosheets enables the sensing of ethanol at room temperature. A sensitivity curve to ethanol was recorded in the range 15–50 ppm. The interaction with water, the main interferent in ethanol sensing, was also investigated and the findings disclose a weaker interaction respect to ethanol, thus suggesting that steric factors can play a role in the sensing mechanism.
Titanium Dioxide Doped Graphene for Ethanol Detection at Room Temperature
Alfano B.;Miglietta M. L.;Polichetti T.;Massera E.;Delli Veneri P.
2021-01-01
Abstract
The present work shows the synthesis of a graphene-based nanocomposite with titania nanoparticles through a simple one-step, microwave assisted method. The GR/TiO2 nanocomposite was used for the fabrication of a chemiresistor device and characterized towards oxidizing and reducing gases under controlled environment. The results show how the addiction of titania nanoparticles to graphene nanosheets enables the sensing of ethanol at room temperature. A sensitivity curve to ethanol was recorded in the range 15–50 ppm. The interaction with water, the main interferent in ethanol sensing, was also investigated and the findings disclose a weaker interaction respect to ethanol, thus suggesting that steric factors can play a role in the sensing mechanism.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
