Ultrasensitive Ethanol Response of Hydrothermally Synthesized α-Fe2O3 and SnO2 Nanosphere Heterojunctions.
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| Title: | Ultrasensitive Ethanol Response of Hydrothermally Synthesized α-Fe |
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| Authors: | Zhang, Ke1 (AUTHOR) Zkwy2004@126.com, Zhang, Wenrui1 (AUTHOR), Zhu, Pengdang1 (AUTHOR), Zhang, Ruiyu2 (AUTHOR), Chen, Tianfeng1 (AUTHOR) 1070369072@qq.com |
| Source: | JOM: The Journal of The Minerals, Metals & Materials Society (TMS). Mar2026, Vol. 78 Issue 3, p2115-2125. 11p. |
| Subjects: | Heterojunctions, Gas detectors, Microspheres, Stannic oxide, Nanocomposite materials, Ferric oxide, Hydrothermal synthesis |
| Abstract: | A simple and low-cost hydrothermal method has been used to construct heterojunction nanocomposites with α-Fe2O3 and SnO2 nanospheres, and the optimal preparation conditions were determined by orthogonal experimental design. X-ray diffraction, specific surface area testing, scanning electron microscopy, and other characterization methods have been used to characterize the nanocomposites. The results show that, by attaching α-Fe2O3 particles to SnO2 nanospheres, the specific surface area of the material can reach 112.4603 m2/g. After a systematic gas sensitivity test, the sensitivity of the gas sensor prepared by composite nanomaterials for 100 ppm ethanol reached 33.08 at 220 °C, and the response time (3 s) and recovery time (6 s) were short, and were greatly improved compared with pure SnO2. In addition, the gas sensor fabricated by this composite nanomaterial had excellent stability, and its sensitivity remained basically unchanged after 60 days. Therefore, SnO2/α-Fe2O3 heterojunction nanocomposites can be an ideal material. [ABSTRACT FROM AUTHOR] |
| Copyright of JOM: The Journal of The Minerals, Metals & Materials Society (TMS) is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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