BTEX Gas Sensor Based on Hematite Microrhombuses
| Autor: | Tomas Fiorido, Luís F. da Silva, João V.N. de Palma, Khalifa Aguir, Waldir Avansi, Sandrine Bernardini, Ariadne C. Catto, Marc Bendahan |
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| Přispěvatelé: | Universidade Federal de São Carlos [São Carlos] (UFSCar), Institut des Matériaux, de Microélectronique et des Nanosciences de Provence (IM2NP), Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Diffraction
hematitegas sensor Materials science Absorption spectroscopy Analytical chemistry 02 engineering and technology BTEX 010402 general chemistry 01 natural sciences Hydrothermal circulation Metal benzene Phase (matter) Materials Chemistry toluene Electrical measurements Electrical and Electronic Engineering [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics Instrumentation xylenes Metals and Alloys Hematite 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials ethylbenzene visual_art visual_art.visual_art_medium Fe2O3 0210 nano-technology |
| Zdroj: | Sensors and Actuators B: Chemical Sensors and Actuators B: Chemical, Elsevier, 2020, pp.128817. ⟨10.1016/j.snb.2020.128817⟩ Sensors and Actuators B: Chemical, 2021, 326, pp.128817. ⟨10.1016/j.snb.2020.128817⟩ |
| ISSN: | 0925-4005 |
| Popis: | International audience; Over the past fifty years, gas sensors based on metal semiconducting oxides (MOXs) have drawn attention due to their performance in detecting various gases. Thus, we report herein on a BTEX gases sensor based on hematite (α-Fe2O3) microrhombuses synthesized via the hydrothermal method. X-ray diffraction and X-ray absorption spectroscopy analyses indicated the presence of a pristine hematite phase after hydrothermal treatment. Electron microscopy analyses revealed that the hematite sample consists of single-crystals with a rhombus-like shape and an average size of 140 nm. Electrical measurements pointed out that hematite microrhombuses were sensitive towards sub-ppm BTEX levels, in which the minimum detected level was 3 ppb and the long-term stability was 1 month. The results presented here demonstrate the potential of hematite microrhombuses as a sensing material to manufacture BTEX gas sensor devices. |
| Databáze: | OpenAIRE |
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