期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 947, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2023.169444
关键词
Resistive gas sensor; Ozone; Hydrothermal synthesis
The development of simple and reproducible synthesis techniques for obtaining one-dimensional semi-conducting nanostructures is crucial for gas sensor devices. This study presents a facile and versatile approach for the in-situ growth of vertically oriented hematite nanorods as a resistive ozone gas sensor. The grown alpha-Fe2O3 nanorods exhibited good sensitivity to different ozone concentrations, fast response time, and repeatable response-recovery cycles. This research provides a promising way for designing high-performance gas sensors based on hematite nanorods.
The development of simple and reproducible synthesis techniques for obtaining one-dimensional semi-conducting 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 re-sistive ozone gas sensor. The alpha-Fe2O3 nanorods were grown via a hydrothermal treatment directly onto an Al2O3 substrate with interdigitated Pt electrodes, thus facilitating the integration of nanorods into the sensing platform. At 150 degrees C, the gas-sensing experiments revealed a good sensitivity of these nanorods to different ozone concentrations (10-570 ppb), besides a fast response time and repeatable response-r-ecovery cycles. The present study offers a promising way for designing high-performance gas sensors based on hematite nanorods.(c) 2023 Elsevier B.V. All rights reserved.
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