Emerging single atom catalysts in gas sensors

Single atom catalysts (SACs) offer unprecedented opportunities for high-efficiency reactions taking place in many important fields of catalytic processes, electrochemistry, and photoreactions. Due to their maximized atomic utilization and unique electronic and chemical properties, SACs can provide h...

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Bibliographic Details
Published in:Chemical Society reviews 2022-08, Vol.51 (16), p.726-728
Main Authors: Lei, Guanglu, Pan, Hongyin, Mei, Houshan, Liu, Xianghong, Lu, Guocai, Lou, Chengming, Li, Zishuo, Zhang, Jun
Format: Article
Language:English
Subjects:
Chemical properties
Chemical sensors
Electrochemistry
Electron transport
Gas sensors
Gases
Gold
Palladium
Selectivity
Sensitivity enhancement
Sensors
Single atom catalysts
Zinc
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Summary:Single atom catalysts (SACs) offer unprecedented opportunities for high-efficiency reactions taking place in many important fields of catalytic processes, electrochemistry, and photoreactions. Due to their maximized atomic utilization and unique electronic and chemical properties, SACs can provide high activity and excellent selectivity for gas adsorption and electron transport, leveraging SACs that enhance the detection sensitivity and selectivity to target gases. In the past few years, SACs including both noble (Pt, Pd, Au, etc. ) and non-noble (Mn, Ni, Zn etc. ) metals have been demonstrated to be very useful in optimizing sensing performances. However, a comprehensive review on this topic is still missing. Herein, we summarize the synthesis technologies of SACs that are applicable to gas sensors. The electronic and chemical interactions between SACs and host sensing materials, which are crucial to sensor functions, are discussed. Then, we highlight the application progress of various SACs in gas sensors. Prospects in the creation of new sensing materials with emerging SACs and versatile supports are also present. Finally, the challenges and prospects of SACs in the future development of sensors are analyzed. Single atom catalysts offer unprecedented opportunities for the development of highly sensitive and selective gas sensors.
ISSN:0306-0012
1460-4744
DOI:10.1039/d2cs00257d