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Au-coated ZnO nanorods on stainless steel fiber for self-cleaning solid phase microextraction-surface enhanced Raman spectroscopy
- Source :
- Analytica chimica acta. 923
- Publication Year :
- 2016
-
Abstract
- Solid phase microextraction-surface enhanced Raman spectroscopy (SPME–SERS), combining the pretreatment and determination functions, has been successfully used in environmental analysis. In this work, Au-coated ZnO nanorods were fabricated on stainless steel fiber as a self-cleaning SERS-active SPME fiber. The ZnO nanorods grown on stainless steel fiber were prepared via a simple hydrothermal approach. Then the obtained nanostructures were decorated with Au nanoparticles through ion-sputtering at room temperature. The obtained SERS-active SPME fiber is a reproducible sensitivity sensor. Taking p-aminothiophenol as the probe molecule, the RSD value of the SERS-active SPME fiber was 8.9%, indicating the fiber owned good uniformity. The qualitative and quantitative detection of crystal violet and malachite green was also achieved. The log–log plot of SERS intensity to crystal violet and malachite green concentration showed a good linear relationship. Meanwhile, this SERS-active SPME fiber can achieve self-cleaning owning to the excellent photocatalytic performance of ZnO nanorods. Crystal violet was still successfully detected even after five cycles, which indicated the high reproducibility of this SERS-active SPME fiber.
- Subjects :
- Stainless steel fiber
010401 analytical chemistry
Analytical chemistry
Nanoparticle
02 engineering and technology
Surface-enhanced Raman spectroscopy
engineering.material
021001 nanoscience & nanotechnology
Solid-phase microextraction
01 natural sciences
Biochemistry
0104 chemical sciences
Analytical Chemistry
symbols.namesake
chemistry.chemical_compound
chemistry
symbols
engineering
Environmental Chemistry
Nanorod
Crystal violet
Fiber
0210 nano-technology
Raman spectroscopy
Spectroscopy
Subjects
Details
- ISSN :
- 18734324
- Volume :
- 923
- Database :
- OpenAIRE
- Journal :
- Analytica chimica acta
- Accession number :
- edsair.doi.dedup.....4a15cf980ff2b343be186da57eec47de