High performance and reusable SERS substrates using Ag/ZnO heterostructure on periodic silicon nanotube substrate
| Autor: | Yi-Chen Lai, Bo-Wei Shih, Feng-Yu Tsai, Chun-Hway Hsueh, Hsin-Chia Ho |
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| Rok vydání: | 2018 |
| Předmět: |
Silicon nanotube
Nanostructure Materials science business.industry Nanowire General Physics and Astronomy Nanoparticle 02 engineering and technology Surfaces and Interfaces General Chemistry Substrate (electronics) 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films symbols.namesake symbols Photocatalysis Optoelectronics 0210 nano-technology Raman spectroscopy business Raman scattering |
| Zdroj: | Applied Surface Science. 439:852-858 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2018.01.092 |
| Popis: | Surface-enhanced Raman scattering (SERS) substrate with a higher surface area, enhanced light harvesting, multiple hot spots and strong electromagnetic field enhancements would exhibit enhanced Raman signals. Herein, the Ag nanoparticle/ZnO nanowire heterostructure decorated periodic silicon nanotube (Ag@ZnO@SiNT) substrate was proposed and fabricated. The proposed structure employed as SERS-active substrate was examined, and the results showed both the high performance in terms of high sensitivity and good reproducibility. Furthermore, the Ag@ZnO@SiNT substrate demonstrated the self-cleaning performance through the photocatalytic degradation of probed molecules upon UV-irradiation. The results showed that the proposed nanostructure had high performance, good reproducibility and reusability, and it is a promising SERS-active substrate for molecular sensing and cleaning. |
| Databáze: | OpenAIRE |
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