Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing nano-copper coating through electrodeposition

An electrodeposition and nano-copper technology, applied in the field of environmental analysis materials and nano-materials, can solve the problems of low productivity and high cost, and achieve the effects of low cost, uniform distribution and simple preparation process.

Inactive Publication Date: 2016-01-27
NORTHWEST NORMAL UNIVERSITY
View PDF2 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, although the gas condensation method has the advantages of clean surface and high relative density of the prepared nanoparticles, it still has disadvantages such as high cost and low productivity.

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
  • Method for preparing nano-copper coating through electrodeposition
  • Method for preparing nano-copper coating through electrodeposition
  • Method for preparing nano-copper coating through electrodeposition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Clean the stainless steel wire (Φ=0.25mm) ultrasonically with acetone for 10 minutes, and then ultrasonically clean it with ultrapure water for 10 minutes;

[0018] (2) At an ambient temperature of 35°C, immerse one end of the stainless steel wire in 30% aqua regia solution for etching for 60 minutes; take it out and store it in methanol solution; figure 1 It is the SEM image of unetched stainless steel wire and etched stainless steel wire. Depend on figure 1 It can be seen that the surface of the etched stainless steel wire is relatively rough, which greatly increases the specific surface area of ​​the stainless steel wire, which can further increase the strength of the bond with the metal;

[0019] (3) Prepare 5mmol / L CuSO 4 The solution is used as the electrolyte, under the three-electrode system (the etched stainless steel wire is the working electrode, the platinum electrode is the counter electrode, and the saturated calomel electrode is the reference electr...

Embodiment 2

[0021] (1) Clean the stainless steel wire (Φ=0.25mm) ultrasonically with acetone for 10 minutes, and then ultrasonically clean it with ultrapure water for 10 minutes;

[0022] (2) At an ambient temperature of 45°C, immerse one end of the etched stainless steel wire in 30% aqua regia solution for 50 minutes; take it out and store it in methanol solution;

[0023] (3) Prepare 2mmol / L CuSO 4 The solution is used as the electrolyte, under the three-electrode system (the etched stainless steel wire is the working electrode, the platinum electrode is the counter electrode, and the saturated calomel electrode is the reference electrode), the control voltage is -0.2V~0.4V, and the number of scan cycles is Electrodeposition was performed at a scanning speed of 40mv / s for 20 laps to obtain a nano-copper fiber head; take it out, wash it with ultra-pure water, and dry it under air isolation to obtain uniform nano-copper particles. The SEM picture of the product is attached image 3 (The...

Embodiment 3

[0025] (1) Clean the stainless steel wire (Φ=0.35mm) ultrasonically with acetone for 10 minutes, and then ultrasonically clean it with ultrapure water for 10 minutes;

[0026] (2) Under the condition of 45°C, immerse one end of the etched stainless steel wire in a hydrofluoric acid solution with a mass concentration of 30% and etch for 30 minutes; take it out and store it in a methanol solution;

[0027] (3) Prepare 3mmol / L Cu(NO 3 ) 2 The solution is used as the electrolyte, under the three-electrode system (the etched stainless steel wire is the working electrode, the platinum electrode is the counter electrode, and the saturated calomel electrode is the reference electrode), the control voltage is between -0.5V~0.2V, and the number of scan cycles For 30 cycles, the scanning speed is 30mv / s, conduct electrodeposition to obtain nano-copper fiber head; take it out, wash it with ultra-pure water, and dry it under air isolation to obtain uniform nano-copper particles. The SEM ...

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
sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing a nano-copper coating through electrodeposition. The method includes the steps that after being subjected to ultrasonic cleaning through acetone and ultra-pure water, a stainless steel wire is soaked in a strong acid solution for etching; and after electrodeposition is conducted with the etched stainless steel wire as a working electrode, a platinum electrode as a counter electrode, a saturated calomel electrode as a reference electrode and a copper salt solution as an electrolyte, cleaning and drying are conducted, and then the nano-copper coating is obtained. The electron microscope surface scanning analysis proves that particles of the prepared nano-copper coating range from 80 nm to 150 nm, are of a porous structure and are evenly distributed; the nano-copper coating is large in specific surface area and high in adsorption capacity, is used for extracting phthalic acid esters (PAEs) in environmental samples, and is high in extraction efficiency, stability and acid and alkali resistance. The coating obtained through an extraction head in the solid phase microextraction technology is high in extraction efficiency, stability and acid and alkali resistance. In addition, the particle size and shape of the nano-copper coating are controlled by selecting voltages, the number of scanning turns and scanning rate. The preparation process is simple, cost is low, and operability is high.

Description

technical field [0001] The invention relates to the preparation of a nano-copper coating, in particular to a method for preparing a nano-copper coating by electrodeposition, which is mainly used for the coating of an extraction head in solid-phase microextraction technology, and belongs to the field of nanomaterials and environmental analysis materials . Background technique [0002] Solid Phase Microextraction (Solid Phase Microextraction, SPME) is a solvent-free, easy-to-operate, time-saving and labor-saving technique, which is widely favored by environmental analysis researchers. The extraction head is the most important part of SPME, and the coating of the extraction head is closely related to the performance of the extraction head. The coating determines the sensitivity of the analytical method, the selectivity of the extraction, and the repeatability of the measurement. However, the current solid-phase microextraction coatings have disadvantages such as high price, fe...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/18C25D3/38
Inventor 杨尧霞董元军郭昊彭睿王芳平王雪梅杜新贞
Owner NORTHWEST NORMAL UNIVERSITY