The luminescence properties of the mesoporous silica skeleton of different diatoms are employed to achieve sensing of gas at a low concentration level. Sub-ppm detection of adsorbed NO2 with a detection limit of the orderof 50 ppb for Thalassiosira Rotula is demonstrated; this effect is interpreted as the result of a local interaction between gas molecules and surface oxygen vacancies leading to static suppression of light-emission centres.
The gas-detection properties of light-emitting diatoms / Lettieri, S.; Setaro, Antonio; De Stefano, L.; De Stefano, M.; Maddalena, Pasqualino. - In: ADVANCED FUNCTIONAL MATERIALS. - ISSN 1616-301X. - STAMPA. - 18:(2008), pp. 1257-1264. [10.1002/adfm.200701124]
The gas-detection properties of light-emitting diatoms
S. Lettieri
;SETARO, ANTONIO;MADDALENA, PASQUALINO
2008
Abstract
The luminescence properties of the mesoporous silica skeleton of different diatoms are employed to achieve sensing of gas at a low concentration level. Sub-ppm detection of adsorbed NO2 with a detection limit of the orderof 50 ppb for Thalassiosira Rotula is demonstrated; this effect is interpreted as the result of a local interaction between gas molecules and surface oxygen vacancies leading to static suppression of light-emission centres.| File | Dimensione | Formato | |
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