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Surface-enhanced Raman scattering (SERS) substrate and manufacturing method thereof

A surface-enhanced Raman and substrate technology, applied in the field of physics, can solve the problems of uncontrollable preparation process, complicated preparation process, and poor repeatability, and achieve the effects of controllable and uniform substrate, simple and efficient process, and low cost

Inactive Publication Date: 2016-11-09
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] and the preparation method thereof, the surface-enhanced Raman scattering substrate and the preparation method thereof shall solve the technical problems of cumbersome preparation process, high cost, uncontrollable preparation process and poor repeatability in the prior art

Method used

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  • Surface-enhanced Raman scattering (SERS) substrate and manufacturing method thereof
  • Surface-enhanced Raman scattering (SERS) substrate and manufacturing method thereof
  • Surface-enhanced Raman scattering (SERS) substrate and manufacturing method thereof

Examples

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Effect test

Embodiment 1

[0029] Such as figure 1 Shown, the preparation method of surface-enhanced Raman scattering substrate of the present invention, specific operation steps

[0030] as follows:

[0031] S1: Use an anionic surfactant, such as a dilute solution of fatty acid sodium (soapy water is also available), for stone

[0032] British glass substrates are pre-cleaned;

[0033] S2: Use acetone, alcohol, and deionized water to perform ultrasonic cleaning on the quartz glass substrate in order to remove

[0034] To remove surface oxides or impurities, the cleaning time is 5-20min, and the temperature is controlled at 0°C;

[0035] S3: Add graphene suspension dropwise on the quartz glass substrate, add 2 g of graphene powder into 40 ml of isopropanol (absolute ethanol is also available), and stir it into a uniform 0.08 g / ml Graphene suspension, drop 0.4 ml of graphene suspension onto the cleaned quartz glass substrate, and dry it in vacuum at 40°C to form a graphene layer on the quartz glass;...

Embodiment 2

[0041] This embodiment specifically describes the surface-enhanced Raman scattering substrate of the present invention, which includes: a glass substrate,

[0042] Graphene (Graphene) layer and metal oxide film layer.

[0043] In this embodiment, the graphene layer is located on the upper surface of the glass substrate, and the metal oxide film layer is located on the upper surface of the graphene layer.

[0044] In this embodiment, the glass substrate is a quartz glass substrate.

[0045] In this embodiment, the metal oxide film layer is a cuprous oxide layer.

[0046] In a preferred embodiment, the glass substrate can be K9 glass, quartz or crystal.

Embodiment 3

[0048] On the basis of Example 1, this embodiment is used to test the X-ray diffraction pattern of the obtained cuprous oxide film layer of the surface-enhanced Raman scattering substrate having a graphene layer.

[0049] In this embodiment, the test of the X-ray diffraction spectrum of the cuprous oxide film layer is used to detect whether the cuprous oxide is oxidized, that is, to ensure the quality and good crystallinity of the cuprous oxide film layer, and to ensure that the surface-enhanced pulley prepared by the present invention The excellent quality of the Mann scattering substrate.

[0050] Such as figure 2 As shown, the X-ray diffraction spectrum of the cuprous oxide film layer that the present embodiment obtains, wherein, (111), (200) are respectively two crystal planes of cuprous oxide, (111) diffraction peak is narrow and peak height, It shows that the prepared cuprous oxide film layer has good quality and crystallinity, and can meet the requirements of the surf...

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Abstract

The invention provides a surface-enhanced Raman scattering (SERS) substrate which comprises a glass substrate. A graphene layer is arranged on the glass substrate, and a metallic oxide film layer is deposited on the graphene layer. The invention further provides a manufacturing method of the SERS substrate. The manufacturing method includes the steps of cleaning the glass substrate with anionic surfactants in advance, subjecting the glass substrate to ultrasonic cleaning by means of acetone, ethyl alcohol and deionized water sequentially, dropwisely adding graphene suspension liquid onto the glass substrate and then drying, and finally depositing the metallic oxide film layer on the surface of the graphene layer. The manufacturing method has low requirements for equipment and cost, the manufacturing process is simple and effective, and the substrate manufactured by the method is controllable and uniform, is good in repeatability, has excellent SERS effect and high flexibility, and can be used for detection and quantitative analysis of low-content compounds.

Description

technical field [0001] The invention belongs to the field of physics, and relates to a Raman spectrum analysis and detection technology, in particular to a surface-enhanced Raman scattering substrate and a preparation method thereof. Background technique [0002] Surface-enhanced Raman scattering (SERS) can measure the structure information of low-concentration molecules or even single molecules, and is a very potential analysis and detection tool. With the rapid development of nanomaterials, the use of SERS to detect the presence of organic pollutants in the environment has attracted more and more attention from the scientific community. The development of SERS spectroscopy, which organically combines surface science, nanoscience, and biological science, has become a frontier direction in the field of nanomaterial performance research. [0003] There are two kinds of mechanism studies of SERS: electromagnetic field enhancement mechanism (surface electromagnetic field enh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65
CPCG01N21/658
Inventor 洪瑞金王进霞张大伟陶春先
Owner UNIV OF SHANGHAI FOR SCI & TECH
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