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Double-heterostructure surface-enhanced Raman substrate for in-situ detection as well as preparation method and application of double-heterostructure surface-enhanced Raman substrate

A surface-enhanced Raman and double-heterostructure technology, applied in Raman scattering, measurement devices, instruments, etc., can solve the problems of complicated production methods, inability to large-scale preparation, low detection level, etc. Low cost, uniform size effect

Active Publication Date: 2019-12-10
SHANDONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Many existing products for Raman enhancement, their production methods are cumbersome and expensive, and many methods are only for the pursuit of lower detection levels, making it impossible to prepare on a large scale

Method used

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  • Double-heterostructure surface-enhanced Raman substrate for in-situ detection as well as preparation method and application of double-heterostructure surface-enhanced Raman substrate
  • Double-heterostructure surface-enhanced Raman substrate for in-situ detection as well as preparation method and application of double-heterostructure surface-enhanced Raman substrate
  • Double-heterostructure surface-enhanced Raman substrate for in-situ detection as well as preparation method and application of double-heterostructure surface-enhanced Raman substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Cut the polyester resin flexible film into square pieces of 1 square centimeter, put them in the cleaning solution for cleaning for 1 to 10 minutes, and blow dry with nitrogen gas.

[0041] Put the above-mentioned film into a plasma cleaner for cleaning for 2 to 3 minutes to increase its surface hydrophilicity.

[0042] Put the cleaned polyester resin film into a magnetron sputtering apparatus, set the power to 100 watts, and the pressure to 10-6 Pa, and sputter the copper oxide seed crystal layer with a sputtering thickness of about 60 nanometers.

[0043] The above-mentioned film was placed on the anode end of the electrochemical cell of the two-electrode system, the cathode end was selected as an aluminum electrode, the electrolyte was sodium hypochlorite solution, the voltage was 5 volts, the current was 10 mA, and copper oxide nanowires were electrochemically deposited for 800 seconds.

[0044] The polyester resin film grown with copper peroxide nanowires is cleane...

Embodiment 2

[0051] Cut the polyester resin flexible film into square pieces of 1 square centimeter, put them in the cleaning solution for cleaning for 1 to 10 minutes, and blow dry with nitrogen gas.

[0052] Put the above-mentioned film into a plasma cleaner for cleaning for 2 to 3 minutes to increase its surface hydrophilicity.

[0053] Put the cleaned polyester resin film into a magnetron sputtering apparatus with a power setting of 100 watts and a pressure of 10-6 Pa to sputter a copper oxide seed layer with a sputtering thickness of about 80 nanometers.

[0054]The above-mentioned film was placed on the anode end of the electrochemical cell of the two-electrode system, the cathode end was selected as an aluminum electrode, the electrolyte was sodium hypochlorite solution, the voltage was 6 volts, the current was 11 mA, and copper oxide nanowires were electrochemically deposited for 850 seconds.

[0055] The polyester resin film grown with copper peroxide nanowires is cleaned in a pla...

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Abstract

The invention relates to a double-heterostructure surface enhanced Raman substrate for in-situ detection as well as a preparation method and application of the double-heterostructure surface enhancedRaman substrate. The method comprises the following steps: sputtering a copper oxide seed crystal layer on the surface of a polyester resin film, and then putting the polyester resin film into an electrochemical battery system, so that the copper oxide seed crystal layer becomes a copper oxide nanowire, and the polyester resin film loaded with the copper oxide nanowire is obtained; a mixed solution of graphene oxide and silver particles is prepared, the polyester resin film loaded with the copper oxide nanowires enters the mixed solution of graphene oxide and silver particles, and the double-heterostructure surface enhanced Raman substrate is obtained. The energy level of the graphene oxide is 2.9 eV, the energy level of the silver is 4.1 eV, and the energy level of the copper oxide is 5.3eV; and a Raman detection signal is enhanced. The detection accuracy is higher and the detection is more comprehensive.

Description

technical field [0001] The invention belongs to the technical field of metal material preparation, and in particular relates to a double-heterostructure surface-enhanced Raman substrate for in-situ detection, a preparation method and application thereof. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] At present, there are various researches on surface-enhanced Raman spectroscopy, and enhancement methods emerge in endlessly. It has reached various aspects such as internal medicine diagnostics, environmental protection, food safety, and national defense security. In terms of theoretical research, two theories of electromagnetic enhancement and chemical enhancement are pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65
CPCG01N21/658
Inventor 郁菁魏义胜雷风采
Owner SHANDONG NORMAL UNIV
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