NDLI: Ultra-thin Au tip structure: a novel SERS substrate for in situ observation of a p-aminothiophenol surface-catalytic reaction

Content Provider	Royal Society of Chemistry (RSC)
Author	You, Tingting Yin, Penggang Gao, Yukun Jiang, Li Yang, Nan
Copyright Year	2017
Abstract	A novel surface-enhanced Raman scattering (SERS) substrate based on an ultra-thin Au nano-tip structure was prepared using a simple and quick electrochemical etching method in this study. After decorating Au nanoparticles on the surface of the fabricated nanotip using an electrostatic absorption method, SERS measurement was performed on the substrate by using 4-mercaptobenzoic acid (4-MBA) as a Raman probing molecule, showing a good enhancement effect for the sample molecules adsorbed on the nanotip region. Furthermore, the Au tip structure Raman substrate was applied in monitoring and assessing the plasmon-driven surface-catalytic reaction of para-aminothiophenol (PATP) transforming to 4,4-dimercaptoazobenzene (DMAB), and the laser power-dependent and tip size dependent experiments were performed and discussed in this work. The results show high catalytic efficiency on the nanotip with about 40 nm apex diameter under definite laser power, providing a new application in pinpoint monitoring on surface-catalytic reaction within the nanotip region.
Starting Page	4541
Ending Page	4546
Page Count	6
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	7
Issue Number	8
Journal	RSC Advances
DOI	10.1039/c6ra27799c
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Chemical milling SERS Surface-enhanced Raman spectroscopy Laser Electrochemistry Raman Master of Business Administration Catalysis
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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