Assembly Nanoparticle Arrays Decorated with Ultrathin AAO Nanopores for Highly Sensitive SERS Substrate
Source abstract
Abstract
Surface-enhanced Raman scattering (SERS) is widely employed because it offers quick, microscopic, and traceless detection. This study used high-voltage and low-voltage ultrasonic oscillation to embed gold-silver nanoparticles (Au-Ag NPs) into the pores of chemically modified ultrathin anodic alumina (AAO) films, resulting in a highly sensitive three-dimensional SERS substrate. We improved the substrate’s stability and Raman activity by adjusting the particle alloy ratio. For the substrate in this alloy ratio, the Raman signal of probe molecules (Rh6G) adsorbed on the substrate surface is enhanced. the enhancement factor (EF) was as high as 1.40 × 107, the relative standard deviation (RSD) of 10.6%, and the concentration of Rh6G shows a linear relationship with Raman intensity, with a linear correlation coefficient of 0.961. In addition, we evaluated the substrate’s detection effect on thiram molecules. It has been proven that this structure has good practicality and high sensitivity as a Raman enhanced substrate.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Anodic Oxide Films and Nanostructures · Gold and Silver Nanoparticles Synthesis and Applications · Advanced biosensing and bioanalysis techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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