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用于增强丙酮气体传感器的α-FeO-TiO-MXene异质结的简便合成

Facile synthesis of an α-FeO-TiO-MXene heterojunction for enhanced acetone gas sensors.

作者信息

Yang Zhenyuan, Chen Ying

机构信息

School of Science, Hubei University of Technology Wuhan 430068 China

Hubei Engineering Technology Research Center of Energy Photoelectric Device and System, Hubei University of Technology Wuhan 430068 China.

出版信息

RSC Adv. 2025 Jan 29;15(4):3040-3046. doi: 10.1039/d4ra08407a. eCollection 2025 Jan 23.

DOI:10.1039/d4ra08407a
PMID:39882001
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11777313/
Abstract

Acetone is harmful to the environment and human health. Therefore, research on acetone sensors for its high-efficiency detection is necessary. Herein, an α-FeO-TiO-MXene heterojunction was synthesized using a simple precipitation method, and its sensitivity towards acetone was systematically investigated. The response value of the sensor based on the α-FeO-TiO-MXene heterojunction to 50 ppm acetone was 24 at 150 °C, which was more than one-quarter of that of pure α-FeO (5.3). The best response and recovery time were 10 s and 6 s, respectively. The sensors also showed good stability and selectivity. The excellent gas sensitivity was mainly attributed to the formation of heterojunctions, which improved the carrier-transport efficiency and the specific surface area for gas molecular adsorption.

摘要

丙酮对环境和人体健康有害。因此，开展用于高效检测丙酮的传感器研究很有必要。在此，采用简单沉淀法合成了α-FeO-TiO-MXene异质结，并系统研究了其对丙酮的灵敏度。基于α-FeO-TiO-MXene异质结的传感器在150℃时对50 ppm丙酮的响应值为24，是纯α-FeO（5.3）的四分之一以上。最佳响应时间和恢复时间分别为10秒和6秒。该传感器还表现出良好的稳定性和选择性。优异的气敏性能主要归因于异质结的形成，这提高了载流子传输效率和气体分子吸附的比表面积。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50c9/11777313/7ae799dd9284/d4ra08407a-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50c9/11777313/0fe38d795f75/d4ra08407a-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50c9/11777313/cdfdc172f7c3/d4ra08407a-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50c9/11777313/d7949b44c874/d4ra08407a-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50c9/11777313/853ec90fde08/d4ra08407a-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50c9/11777313/041202c54b8c/d4ra08407a-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50c9/11777313/455242d8131a/d4ra08407a-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50c9/11777313/28c8e66d8c11/d4ra08407a-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50c9/11777313/63cdefcb4b5c/d4ra08407a-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50c9/11777313/7ae799dd9284/d4ra08407a-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50c9/11777313/0fe38d795f75/d4ra08407a-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50c9/11777313/cdfdc172f7c3/d4ra08407a-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50c9/11777313/d7949b44c874/d4ra08407a-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50c9/11777313/853ec90fde08/d4ra08407a-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50c9/11777313/041202c54b8c/d4ra08407a-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50c9/11777313/455242d8131a/d4ra08407a-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50c9/11777313/28c8e66d8c11/d4ra08407a-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50c9/11777313/63cdefcb4b5c/d4ra08407a-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50c9/11777313/7ae799dd9284/d4ra08407a-f9.jpg

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本文引用的文献

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2
Quasicrystal Nanosheet/α-FeO Heterostructure-Based Low Power NO Sensors: Experimental and DFT Studies.基于准晶纳米片/α-FeO异质结构的低功耗NO传感器：实验与密度泛函理论研究
ACS Appl Mater Interfaces. 2024 Apr 3;16(13):16687-16698. doi: 10.1021/acsami.4c00201. Epub 2024 Mar 22.
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Application of Polyoxometalates in Chemiresistive Gas Sensors: A Review.
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ACS Sens. 2022 Dec 23;7(12):3634-3643. doi: 10.1021/acssensors.2c02341. Epub 2022 Dec 12.
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Origin of the complex main and satellite features in Fe 2p XPS of FeO.FeO的Fe 2p X射线光电子能谱中复杂主峰和卫星峰特征的起源。
Phys Chem Chem Phys. 2022 Feb 16;24(7):4562-4575. doi: 10.1039/d1cp04886d.