Advances in modification of metal and noble metal nanomaterials for metal oxide gas sensors: a review

IF 9.6 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Rare Metals Pub Date : 2025-02-11 DOI:10.1007/s12598-024-03027-7

Dan-Hong Gao, Qiu-Chen Yu, Mesfin A. Kebeded, Yu-Yan Zhuang, Sheng Huang, Ming-Zhi Jiao, Xin-Jian He

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引用次数: 0

Abstract

Highly sensitive gas sensors play an important role in applications, such as environmental monitoring, medical diagnostics and food testing. This paper reviews recent advances in metal-doped and noble metal-decorated chemo-resistive gas sensors with different nanostructures (ZnO, SnO₂, In₂O₃ and Fe₂O₃). It mainly includes the doping of metals such as Al, Fe and Cu, and the modification of noble metals such as Pd, Pt and Au, and introduces the bimetallic-modified materials possessing greater advantages than single metals in enhancing gas-sensitive performance. The results and problems of room-temperature detection of perovskite and metal oxide composite structural materials are also discussed. In addition, the potential applications of micro-electro-mechanical system (MEMS) gas sensing arrays and electronic nose smart sensing devices in disease diagnosis and environmental monitoring are presented through their limitations and development trends in areas such as smart homes. Finally, the main challenges and future prospects of metal oxide gas sensors are presented.

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金属氧化物气体传感器用金属及贵金属纳米材料改性研究进展

高灵敏度的气体传感器在环境监测、医疗诊断和食品检测等应用中发挥着重要作用。本文综述了不同纳米结构（ZnO、SnO2、In2O3和Fe2O3）的金属掺杂和贵金属修饰化学电阻气体传感器的研究进展。主要包括Al、Fe、Cu等金属的掺杂和Pd、Pt、Au等贵金属的改性，并介绍了在提高气敏性能方面比单一金属具有更大优势的双金属改性材料。讨论了钙钛矿和金属氧化物复合结构材料室温检测的结果和存在的问题。此外，介绍了微机电系统（MEMS）气敏阵列和电子鼻智能传感设备在疾病诊断和环境监测方面的潜在应用，以及它们在智能家居等领域的局限性和发展趋势。最后，提出了金属氧化物气体传感器的主要挑战和未来的发展前景。

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来源期刊

Rare Metals 工程技术-材料科学：综合

CiteScore

12.10

自引率

12.50%

发文量

2919

审稿时长

2.7 months

期刊介绍： Rare Metals is a monthly peer-reviewed journal published by the Nonferrous Metals Society of China. It serves as a platform for engineers and scientists to communicate and disseminate original research articles in the field of rare metals. The journal focuses on a wide range of topics including metallurgy, processing, and determination of rare metals. Additionally, it showcases the application of rare metals in advanced materials such as superconductors, semiconductors, composites, and ceramics.