期刊
CHEMICAL SOCIETY REVIEWS
卷 50, 期 2, 页码 750-765出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0cs00367k
关键词
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资金
- Fundamental Research Funds for the Central Universities [CCNU20TS013]
- Program of Introducing Talents of Discipline to Universities of China (111 program) [B17019]
- Washington State University, USA
The development of highly sensitive biosensors has been a focus in recent years. Single-atom catalysts show promise in enhancing signal amplification in biosensing, offering improved sensitivity and selectivity through tunable metal-support interactions and the structural features of active sites.
Development of highly sensitive biosensors has received ever-increasing attention over the years. Due to the unique physicochemical properties, the functional nanomaterial-enabled signal amplification strategy has made some great breakthroughs in biosensing. However, the sensitivity and selectivity still need further improvement. Single-atom catalysts (SACs) containing atomically dispersed metal active sites demonstrate distinctive advantages in catalytic activity and selectivity for various catalytic reactions. As a consequence, the SAC-enabled signal amplification strategy holds great promise in biosensors, demonstrating satisfactory sensitivity and selectivity with the assistance of tunable metal-support interactions, coordination environments and geometric/electronic structures of active sites. In this tutorial review, we briefly discuss the structural advantages of SACs. Then, the catalytic mechanism at the atomic scale and signal amplification effects of SACs in the colorimetric, electrochemical, chemiluminescence, electrochemiluminescence, and photoelectrochemical biosensing applications are highlighted in detail. Finally, opportunities and challenges to be faced in the future development of the SAC-enabled signal amplification strategy for biosensing are discussed and outlooked.
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