Adhesive tape-based portable SERS sensor, preparation method thereof and application of sensor
A sensor and portable technology, applied in the field of tape-based portable SERS sensor and its preparation
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0039] Embodiment 1: the synthesis of nano-dendritic gold
[0040] Such as figure 1 Cut a section of 5*2cm double-sided tape as shown, carefully peel off the release paper layer from the adhesive layer, and use a hole punch to punch a small hole with a diameter of 2mm. The release paper layer after punching is reattached to the adhesive layer to form a microporous area which is respectively the release paper layer and the adhesive layer from top to bottom. A mask plate with 2mm microholes is clamped on the tape, and the microhole area on the mask plate is aligned with the microhole area on the tape, and a layer of flat gold is magnetron sputtered to increase the conductivity of the microhole area , with the microporous area as the working electrode, the silver / silver chloride electrode as the reference electrode, the platinum wire electrode as the counter electrode, and the chloroauric acid solution (1g chloroauric acid powder is dilute to 150mL with 0.5M sulfuric acid) As t...
Embodiment 2
[0041] Embodiment 2: the detection of standard rhodamine 6G (R6G) solution
[0042] The adhesive tape decorated with the nanodendritic gold substrate was washed with deionized water to remove impurities. Add 5 μL dropwise to each microwell area with a concentration of 10 -3 ,10 -4 ,10 -5 ,10 -6 ,10 -7 ,10 -8 and 10 -9 For the rhodamine aqueous solution of M, place it naturally at room temperature for about 10 minutes to make the solvent completely evaporate. Each micropore area deposited with rhodamine was detected separately with a handheld Raman spectrometer at a wavelength of 785 nm, and a data map of Raman intensity versus rhodamine concentration was obtained. Such as Figure 4 Shown, rhodamine at 600, 780, 1180, 1360, 1650cm -1 There are obvious characteristic peaks on the left and right.
Embodiment 3
[0043] Embodiment 3: the detection of additive Sudan red (Sudan-1)
[0044] Raman detection of Sudan-1 solution: Sudan red is a common chemical dye, not a food additive. Because of its bright color and not easy to fade, it can arouse people's strong appetite, and illegal businesses often add it to food. The prepared tape base with nano-dendritic gold in the prepared micropores is cleaned with ultrapure water to ensure that the micropore area is clean. The concentration of 10 -3 M Sudan-1 ethanol solution and red pepper oil solution, wait at room temperature for 10 minutes until the water evaporates completely, and Sudan red is completely deposited in the micropore area. A Raman spectrum with a characteristic peak of Sudan Red was measured at a wavelength of 785 nm with a handheld Raman spectrometer. Such as Figure 5 As shown, ethanol solution of Sudan red and red chili oil solution are at 1225, 1389, 1496, 1596cm -1 There are obvious characteristic peaks on the left and ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More