Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method and application of copper nano-cluster solution

A copper nanocluster and solution technology, applied in the field of preparation of copper nanocluster solution, can solve the problems of unfavorable trace component gold ion determination, low precision of weighing method, and little detection use, etc., and achieve strong reducibility and easy operation Easy to implement, simple post-processing effects

Inactive Publication Date: 2016-04-20
ANHUI NORMAL UNIV
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are many detection methods for Au(III), the most widely used method so far is the titration method, which is simple, fast and low-cost, but the Ag in the solution + Ions will affect the detection results; the weighing method has low precision; plasma mass spectrometry and atomic absorption spectrometry have serious matrix interference, and a large amount of gold ions need to be enriched for accurate determination; electrochemical analysis can only detect trace components gold ions, which is not conducive to the determination of trace components of gold ions, and is not very useful for the current detection; other ions interfere seriously in the absorbance photometry

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 and application of copper nano-cluster solution
  • Preparation method and application of copper nano-cluster solution
  • Preparation method and application of copper nano-cluster solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A preparation method for a copper nanocluster solution, comprising the steps of:

[0033] Add 2500μL polyethyleneimine and 20ml ultrapure water into a 50mL Erlenmeyer flask, stir and shake on a magnetic stirrer for 2min; then, add 1250μL 1M copper sulfate solution to the Erlenmeyer flask and continue shaking, and finally, add 2200μL hydrazine hydrate to it After the solution is completely mixed, put it in a 95°C oil bath and react for 48 hours. After the reaction is complete, cool the solution to a room temperature of 28-32°C, and dialyze it with a dialysis bag with a molecular weight cut-off of 500 for 24 hours to remove excess After the dialysis is completed, the desired copper nanocluster solution is obtained.

[0034] The obtained copper nanocluster solution was tested by transmission electron microscope, and its TEM image is as follows: figure 1 As shown, it can be seen from the figure that the average particle size of the copper nanoclusters prepared by the metho...

Embodiment 2

[0038] A preparation method for a copper nanocluster solution, comprising the steps of:

[0039] Add 2200μL polyethyleneimine and 16ml ultrapure water into a 50mL conical flask, stir and shake on a magnetic stirrer for 3.5min; then, add 1000μL 1.3M copper sulfate solution to the conical flask and continue shaking, and finally 1800 μL of hydrazine hydrate, after the solution is completely mixed, put it in a 90°C oil bath to react for 44 hours, after the reaction is complete, cool the solution to room temperature of 28-32°C, and dialyze with a dialysis bag with a molecular weight cut-off of 650 for 22 hours to remove the solution After the excess copper ions in the dialysis is completed, the desired copper nanocluster solution is obtained.

Embodiment 3

[0041] A preparation method for a copper nanocluster solution, comprising the steps of:

[0042]Add 2800μL polyethyleneimine and 22ml ultrapure water into a 50mL Erlenmeyer flask, stir and shake on a magnetic stirrer for 5min; then, add 1400μL 1.5M copper sulfate solution to the Erlenmeyer flask and continue shaking, and finally, add 2400μL Hydrazine hydrate, after the solution is completely mixed, put it in a 100°C oil bath for 44 hours to react. After the reaction is complete, cool the solution to room temperature of 28-32°C, and dialyze it with a dialysis bag with a molecular weight cut-off of 800 for 26 hours to remove the hydrazine in the solution. Excess copper ions, after the dialysis is completed, the desired copper nano-cluster solution is obtained.

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
The average particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method and an application of a copper nano-cluster solution. Polyethyleneimine is used as a template, and hydrazine hydrate is used as a reducing agent, so as to synthesize into a copper nano-cluster with stronger fluorescent property; the fluorescence of the material is quenched by trace Au (III) ions, and accordingly a new method for measuring the Au (III) ions is established. The preparation method has the advantages that the operation is simple, the detection limit is low, and the Au (III) can be quickly and accurately detected; the copper nano-cluster solution is used as a probe, the Au (III) is detected by fluorescence spectrophotometry, and a new concept is provided for the detection of Au (III).

Description

technical field [0001] The invention belongs to the technical field of preparation and application of functional nano-ions, and in particular relates to a preparation method and application of a copper nano-cluster solution. Background technique [0002] Gold is a precious natural resource. According to its distribution in the earth's crust, it belongs to trace elements. Gold has a high degree of chemical stability. In nature, it is mainly distributed in rock layers and ore in the state of element. Gold is not only a currency or an ornament, it is also widely used in medicine, nonlinear optics, etc. If the valuable metals in some wastes can be recycled, it is of great significance to the economy, environment and society. [0003] The recycling of non-ferrous metals is an industrial field that will inevitably form when the industrialized society develops to a certain extent. With the acceleration of industrialization and the improvement of people's consumption level, a large...

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): C09K11/58G01N21/64
CPCC09K11/58G01N21/643G01N2021/6432
Inventor 刘金水王彬高亚芳
Owner ANHUI NORMAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com