期刊
BIOSENSORS & BIOELECTRONICS
卷 106, 期 -, 页码 29-36出版社
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2018.01.041
关键词
Ag nanosheets; Nonenzymatic biosensor; Hydrogen peroxide; Electrochemical sensor; Living cells
类别
资金
- National Natural Science Foundation of China (NSFC) [51501140]
- Shaanxi Province Science Foundation for Youth [2016JQ5028]
- China Postdoctoral Science Foundation [2016M602808]
- Natural Science Foundation of Jiangsu Province [BK20161250, BK20171235]
- Public Welfare Technology Application Research Project of Zhejiang Province [2016C31G4181807]
- Fundamental Research Funds for the Central Universities
Facile synthesis of ultrathin two-dimensional metallic nanosheets with special physical and chemical properties is still challenging. In this work, ultrathin silver nanosheets were synthesized through the galvanic replacement reaction between silver nitrate and Cu microcages without using any surfactant at room temperature. The as prepared Ag nanosheets (NSs) were concave and had a thickness of sub-10 nm. And the nanosheets exhibited excellent H2O2 detection property with a high sensitivity of about 320.3 uA mM(-1) cm(-2) and a low detection limit of 0.17 mu M in a wide linear range of 5-6000 mu A, and a fast response time (less than 2 s). Besides, the real-time detection of H2O2 induced from living HeLa and SH-SY5Y cells were also achieved, indicating the potential application of as-prepared Ag NSs in monitoring physiological and dynamic in-clinic pathological processes.
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