Publications scientifiques

Publications récentes des membres du club CMC2

– Sandrine Bernardini de l’IM2NP vient de publier un article en collaboration avec des collègues de Sao Carlos (Brésil) sur la synthèse de nanorods à base de Fe2O3 pour la détection de traces d’ozone. Vous trouverez ci-dessous les références de l’article et le résumé.

In-Situ Hydrothermal Synthesis of Oriented Hematite Nanorods for Sub-ppm Level Detection of Ozone Gas

C. Catto, Sandrine Bernardini, Khalifa Aguir, Elson Longo and Luís F. da Silva

https://www.sciencedirect.com/science/article/abs/pii/S0925838823007478

The development of simple and reproducible synthesis techniques for obtaining one-dimensional semiconducting nanostructures is essential for the advancement of gas sensor devices. We report a facile and versatile approach for the in-situ growth of vertically oriented hematite nanorods to be applied as a resistive ozone gas sensor. The α-Fe2O3  were grown via a hydrothermal treatment directly onto an Al2O3 nanorods substrate with interdigitated Pt electrodes, thus facilitating the integration of nanorods into the sensing platform. At 150 °C, the gas-sensing experiments revealed a good sensitivity of these nanorods to different ozone concentrations (10 to 570 ppb), besides a fast response time and repeatable response–recovery cycles. The present study offers a promising way for designing high-performance gas sensors based on hematite nanorods.

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