Journal
APPLIED SURFACE SCIENCE
Volume 439, Issue -, Pages 852-858Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2018.01.092
Keywords
Surface-enhanced Raman scattering; Photocatalyst; ZnO nanowires; Silicon nanotubes; Textured substrate; Atomic layer deposition
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Funding
- Ministry of Science and Technology, Taiwan [MOST 103-2221-E-002-076-MY3]
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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. (C) 2018 Elsevier B.V. All rights reserved.
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