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Preparation method of salt bridge-assisted primary battery growth-induced gold nanoparticle surface-enhanced Raman scattering substrate

A surface-enhanced Raman and gold nanoparticle technology, applied in Raman scattering, nanotechnology, nanotechnology, etc., can solve time-consuming problems, achieve good enhancement effect, improve SERS enhancement effect, and improve SERS activity.

Inactive Publication Date: 2018-07-06
ANHUI AGRICULTURAL UNIVERSITY
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Problems solved by technology

However, electron beam etching requires expensive and complicated equipment, and it is time-consuming to prepare a large-area SERS substrate by using it.

Method used

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  • Preparation method of salt bridge-assisted primary battery growth-induced gold nanoparticle surface-enhanced Raman scattering substrate
  • Preparation method of salt bridge-assisted primary battery growth-induced gold nanoparticle surface-enhanced Raman scattering substrate
  • Preparation method of salt bridge-assisted primary battery growth-induced gold nanoparticle surface-enhanced Raman scattering substrate

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0033] refer to figure 1 As shown, a method for preparing a surface-enhanced Raman scattering substrate of a salt bridge assisted primary battery to induce growth of gold nanoparticles comprises the following steps:

[0034] Step 1: Prepare 20mL 2.5×10 -4 mol / L of chloroauric acid and 2.5×10 -4 mol / L mixed solution of sodium citrate, then add 0.6mL concentration of sodium borohydride aqueous solution of 0.1mol / L, after stirring for 30min, leave standstill for 3 hours to obtain the gold seed crystal colloidal solution;

[0035]Step 2: Add 3g of agar and 97mL of distilled water into the container, heat in a water bath until the agar is completely dissolved, then add ...

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Abstract

The invention belongs to the field of surface-enhanced Raman scattering effects of silicon wafers, and discloses a preparation method of a salt bridge-assisted primary battery growth-induced gold nanoparticle surface-enhanced Raman scattering substrate. The preparation method comprises the following steps: 1, preparing a gold seed crystal colloidal solution from chloroauric acid, sodium citrate and sodium borohydride; 2, taking agar and potassium chloride, adding distilled water, dissolving, and then pouring into a U-shaped tube to obtain an agar-potassium chloride salt bridge; 3, dropwise adding the gold seed crystal colloidal solution onto the surface of ITO conductive glass to obtain an ITO conductive glass substrate spin-coated with gold seed crystals; 4, connecting graphite with the ITO conductive glass substrate by using a conductive wire, placing the graphite in a ferrous chloride solution, placing the ITO conductive glass substrate in a depositing solution, inserting the agar-potassium chloride salt bridge into the two solutions, and standing for 3 hours; 5, sputtering silver onto the ITO conductive glass substrate to obtain the gold nanoparticle surface-enhanced Raman scattering substrate. The preparation method is simple, the preparation time is short, and the prepared gold nanoparticle substrate has very good SERS activity and uniformity and high detection sensitivity.

Description

technical field [0001] The invention relates to the field of surface-enhanced Raman scattering effects of silicon wafers, in particular to a method for preparing a surface-enhanced Raman scattering substrate of gold nanoparticles induced by a salt bridge-assisted primary battery. Background technique [0002] The special optical properties of gold nanoparticles are one of the research hotspots in the field of nanomaterials. Because of their good stability, bio-affinity, and surface plasmon resonance absorption, they have broad applications in many fields. application prospects. Because the surface plasmon resonance absorption property of gold nanostructures can induce strong electromagnetic field enhancement, various structures of gold are also widely used in surface-enhanced Raman scattering (SERS) research. [0003] As we all know, the optical properties of gold nanoparticles are closely related to size, size, and shape. The traditional preparation methods of gold nanopar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65B22F9/24C23C18/54C23C14/16C23C28/02B82Y40/00B82Y30/00
CPCB22F9/24B82Y30/00B82Y40/00C23C14/165C23C18/54C23C28/023G01N21/658
Inventor 李中波杜兆芳李倩文王宝霞何敏丽
Owner ANHUI AGRICULTURAL UNIVERSITY
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