Preparation method of carbon-based quantum dot/nano-silver surface enhanced raman base

A surface-enhanced Raman and carbon-based quantum dot technology, applied in Raman scattering, measurement devices, instruments, etc., to achieve the effects of strong Raman signal, uniform size, and good stability

Inactive Publication Date: 2016-03-30
FUZHOU UNIVERSITY
View PDF5 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few studies on the application of

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of carbon-based quantum dot/nano-silver surface enhanced raman base
  • Preparation method of carbon-based quantum dot/nano-silver surface enhanced raman base
  • Preparation method of carbon-based quantum dot/nano-silver surface enhanced raman base

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example 1

[0023] Weigh 20 mg of carbon-based quantum dots and 60 mg of silver nitrate and dissolve them in 50 mL of deionized water, and then add 20 mg of sodium borohydride. The solution instantly turns black and viscous, and the reaction is continued for 30 minutes with stirring. After stopping the reaction, take out the solution in the beaker, centrifuge at 13000g centrifugal force for 5 minutes, repeat centrifugal cleaning 5 times, until the centrifuge supernatant is clear; the resulting precipitate is dissolved in 10 mL of double distilled water to obtain the carbon-based quantum dots / nanosilver composite Material: Store in a refrigerator at 4°C, protected from light.

Example Embodiment

[0024] Example 2

[0025] Weigh 200 mg of carbon-based quantum dots and 6 mg of silver nitrate and dissolve them in 50 mL of deionized water, and then add 0.2 mg of sodium borohydride. The solution instantly turns black and viscous, and stirring is continued for 5 hours. After the reaction was stopped, the solution in the beaker was taken out, centrifuged at 7000g for 30 min, and centrifuged and cleaned 5 times until the supernatant was clear. The obtained precipitate is dissolved in 10 mL of twice-distilled water to obtain a carbon-based quantum dot / nano silver composite material. Store in a refrigerator at 4°C, protected from light.

Example Embodiment

[0026] Example 3

[0027] Weigh 2 mg of carbon-based quantum dots and 60 mg of silver nitrate and dissolve them in 50 mL of deionized water, and then add 200 mg of sodium borohydride. The solution instantly turns black and viscous. Continue stirring for 5 hours. After stopping the reaction, take out the solution in the beaker, centrifuge for 10 min under 9000g centrifugal force, repeat centrifugal cleaning 5 times, until the centrifuge supernatant is clear; the obtained precipitate is dissolved in 10mL of double distilled water to obtain the carbon-based quantum dots / nanosilver composite Material: Store in a refrigerator at 4°C, protected from light.

[0028] figure 1 SEM image (a) and transmission electron microscope image (b) of the prepared carbon-based quantum dot / nanosilver composite material. figure 1 It is shown that the silver nanoparticles prepared by this method are surrounded by a layer of carbon-based quantum dots with a thickness of about 1 to 2 nm, and the average p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Scaleaaaaaaaaaa
Scaleaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a preparation method of a carbon-based quantum dot/nano-silver surface enhanced raman base. The preparation method comprises the following steps: dissolving carbon-based quantum dots and silver ions in a water solution; adding sodium boro-hydride serving as a reducing agent under a stirring state, so as to prepare a carbon-based quantum dot/nano-silver composite material. The preparation method is simple, convenient, easy, free of pollution, fast in reaction, and high in operability. As the carbon-based quantum dots on the surface of the carbon-based quantum dot/nano-silver composite material comprise a large quantity of oxygen-containing functional groups, the carbon-based quantum dot/nano-silver composite material is favorable in dispersity and long-lasting in stability in water. More importantly, as the carbon-based quantum dot/nano-silver composite material comprises a large quantity of 'notches', the surface enhanced raman activity is excellent; as the carbon material on the surface of the carbon-based quantum dot/nano-silver composite material can adsorb benzene series via electrostatic adsorption and Pi-Pi function, the carbon-based quantum dot/nano-silver surface enhanced raman base can be applied to surface enhanced raman detection of the benzene series.

Description

Technical field [0001] The present invention is a field of preparation of Raman base on the surface, a carbon -based quantum dot / nano -silver surface to enhance Raman base preparation method. Background technique [0002] The surface enhancement Raman spectrum is a hotspot of analyzing chemistry at this stage. It not only has extremely high detection sensitivity, strong selectivity, suitable for non -destructive detection and micro -zone and in -situ detection, but also can give relevant substances at the molecular level.Structure information.At present, the surface enhancement Raman technology is mainly used to study the surface phenomenon related to adsorbing molecules to determine the type of adsorption molecules; determine the orientation of adsorbing molecules on the base surface; study the surface reactions of adsorbing molecules and the co -adsorption of research molecules.Therefore, its application areas are extended from basic research to analytical science, materials sc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01N21/65
CPCG01N21/658
Inventor 董永强池毓务万利斯
Owner FUZHOU UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap