Abstract
Plasmonic metal nanostructures possessing plentiful gaps or tips have attracted great attention in surface enhanced Raman scattering (SERS) due to their superior performance. Herein, we present an efficient fabrication strategy to construct a large-area and highly ordered 3D silver “urchin-like” array (SULA) based on the ultra-thin alumina membrane (UTAM) mask and the self-assembled polystyrene spheres template. Numerical simulations reveal that the proposed SULA possesses enormous hotspots at the tips of Ag nanocones and in the crevice gaps between the adjacent Ag nanocaps responsible for high sensitivity with an enhancement factor of 1.8 × 106 and excellent reproducibility with a relative standard deviation of 8.3% in SERS analysis. Furthermore, the SULA substrate exhibits great SERS performance for detecting the contaminant crystal violet and thiram in real water environments and excellent linear intensity-concentration dependence relationships. The results indicate the proposed SULAs are promising to be developed as high-performance SERS platforms in qualitative and quantitative trace contaminants in complex water environments.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
