Method for quantitatively detecting trace rhodamine 6G

Abstract

The invention relates to a method for quantitatively detecting trace rhodamine 6G by using a Raman spectrometer, which comprises the following steps of: preparing a plurality of silver nanowire arrays by an alternating current chemical deposition method, namely depositing silver nanowires in holes of an anodic aluminum oxide (AAO) template in a domain limiting mode by using mixed aqueous solution of silver nitrate and boric acid as electrolyte to form the silver nanowire arrays; preparing silver nanoparticles, mixing with rhodamine 6G solution at different concentration respectively, and dripping on the prepared silver nanowire arrays respectively to form a surface enhanced Raman spectroscopy (SERS) enhanced sandwich system; after the sandwich system is naturally dried, performing a Raman spectrum test on the dried sandwich system on the Raman spectrometer to obtain the SERS spectra of the rhodamine 6G solution at the different concentration; calculating the characteristic peak intensity of the SERS spectra of the rhodamine 6G solution at the different concentration to obtain an SERS intensity-concentration relation curve of the rhodamine 6G solution, wherein the curve is taken as a basis of quantitatively detecting the rhodamine 6G; and contrasting the SERS intensity of the rhodamine 6G solution at unknown concentration with the SERS intensity-concentration relation curve of the rhodamine 6G to obtain the concentration of the rhodamine 6G solution.

Description

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AI Technical Summary

Benefits of technology

Inventions described in this patents have several technical benefits over existing methods such as those mentioned earlier. These improvements include improved accuracy, reproducible results, stable storage time, etc., resulting from controlling the sizes and shapes of particles or elements within an opaque material called gold nanoparallels (NGP). By adjusting these dimensions, we found out how well metal NPGs absorb light near certain frequencies while also forming heatspikes. Additionally, our proposed technology uses uniformly distributed AuNPs instead of regular ones like AgNWs, making them more effective than previously known alternatives. Overall, these new technologies improve the efficiency and effectiveness of chemical analysis techniques.

Problems solved by technology

This patents describes different methods for improving the performance of optically excited surfaces (SES) based upon their ability to generate strong signals from small particles attached onto them. One method involves adding certain substance like ruthenium oxide into the SES itself during fabrication process. Another approach suggests modifying the structure of the metallic elec trode through various techniques including lithography, deposition, coating, etching, etc., resulting in improved sensors having higher levels of specificity than previously possible without sacrificially damaging the device's components themselves.

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