Selectively encapsulating Ag nanoparticles on the surface of two-dimensional graphene for surface-enhanced Raman scattering
| Autor: | Weifeng Chen, Dai Zhongxu, Shaona Chen, Jiacheng Dan, Chenghua Sun, Yingshuang Ha, Ya Zhang, Shan Zuo, Kailimai Su, Xiaotao Shi |
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| Rok vydání: | 2019 |
| Předmět: |
Detection limit
Materials science Graphene Molecularly imprinted polymer General Physics and Astronomy Substrate (chemistry) 02 engineering and technology Surfaces and Interfaces General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films law.invention symbols.namesake Chemical engineering law symbols 0210 nano-technology Selectivity Hybrid material Layer (electronics) Raman scattering |
| Zdroj: | Applied Surface Science. 492:108-115 |
| ISSN: | 0169-4332 |
| Popis: | For preparation of surface-enhanced Raman scattering (SERS) substrate with high stability, reproducibility, and sensitivity performances, graphene/Ag nanoparticles were chosen to make further improvement by introducing molecularly imprinted polymer (MIP) film to protect Ag nanoparticles. The thickness of the resulting ultra-thin MIP layer is 2 nm on the surface of Ag nanoparticles. The preparation of two-dimensional/core-shell structure SERS substrate (G/Ag@MIP) possesses high SERS activity toward the probe of bovine serum albumin (BSA) target molecule, which exhibits a 10 −12 M detection limit. The G/Ag@MIP shows good selectivity and recycle rate in the detecting process. These results show that the hybrid material as a SERS sensor is potential for medical diagnosis in life sciences. |
| Databáze: | OpenAIRE |
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