Method for preparing nano-branched copper-silver bimetal/graphene surface-enhanced Raman spectroscopy substrate

Abstract

The invention provides a method for electrochemically preparing a nano-branched copper-silver bimetal/graphene surface-enhanced Raman spectroscopy substrate, and belongs to the technical field of electrochemistry. The method provided by the invention comprises the following steps of (1) preparing graphene oxide by a redox process using graphite as a raw material, reducing the graphene oxide with vitamin C to obtain graphene, and vacuum-filtering to obtain graphene paper having a thickness of about 10 micrometers; (2) preparing nano-branched copper/silver bimetal by electrodeposition on the graphene paper; and (3) detecting enhancement effect of the nano-branched copper-silver bimetal/graphene by using 4-mercaptobenzoic acid as a detection reagent, wherein the surface enhancement coefficient of the calculated copper silver/graphene (Cu: Ag = 1:1) is 3.7*105 by using 785nm laser. The reason for the high reinforcing effect of the substrate lies in the rough surface of the bimetal, the synergistic effect of copper-silver enhancement, and the chemical enhancement of graphene.

Description

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AI Technical Summary

Benefits of technology

This patented technology uses an improved technique for creating surfaces that can detect small molecules called DLB metal complexes on their way through vibrational scatterings during light absorption or reflection processes. By adjusting certain parameters such as wavelength and intensity of incident radiation, this process allows researchers to study how these tiny particles behave differently when exposed to different chemical environments.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the efficiency at extracting Raman spectra due to improved electronic excitation capabilities and control over the growth process of atomic vibrations during creation processes like deformation of surfaces. Previous techniques were limited in terms of achieving desired results but now offer various advantages: increased sensibility, reduced costs, environmentally friendly nature, and stable long term storage without losing any data stored inside. These advancements make the discovery of effective technologies for producing rare earth sinter powders suitable for applications related to quantum communication devices.

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