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

Method for green synthesis of nanometer zero-valent iron-copper bi-metal material and application

A technology of nano-zero-valent iron and green synthesis, which is applied in the direction of nanotechnology, chemical instruments and methods, and restoration of polluted soil, etc., can solve the problems of small investment in equipment, toxic and side effects of reducing agents, etc., to improve stability and reduce six The effect of chromium content

Active Publication Date: 2016-04-06
TAIYUAN UNIV OF TECH
View PDF5 Cites 29 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] There are many ways to prepare nano-zero-valent iron-copper bimetallic materials. The chemical synthesis of nano-materials is uniform and the investment in equipment is small, but most of the reducing agents for synthesizing nano-zero-valent iron-copper have toxic and side effects

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 green synthesis of nanometer zero-valent iron-copper bi-metal material and application
  • Method for green synthesis of nanometer zero-valent iron-copper bi-metal material and application
  • Method for green synthesis of nanometer zero-valent iron-copper bi-metal material and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 40g of green tea and add 1L of distilled water, heat at 80°C for 1h, cool to room temperature and filter to obtain green tea extract, make a mixed solution with a total molar concentration of 0.12mol / L by making 10mmol of ferrous sulfate and 2mmol of copper chloride, and take 50mL of the mixed solution Stir at 350r / min at 45°C for 10min, and during the stirring process, add 100mL of green tea extract dropwise, continue stirring at 350r / min at 45°C for 20min after adding the green tea extract, and filter the reacted mixed solution immediately. and washed with deionized water and absolute ethanol respectively, put into a vacuum drying oven and dried at 45° C. for 12 hours, and after grinding, a green synthetic nanometer zero-valent iron-copper bimetallic material was obtained.

Embodiment 2

[0030] Weigh 50g of green tea and add 1L of distilled water, heat at 80°C for 1h, cool to room temperature and filter to obtain green tea extract, make a mixed solution with a total molar concentration of 0.12mol / L by 4.8mmol of ferrous nitrate and 1.2mmol of copper sulfate, take 20mL and mix The solution was stirred at 350r / min and 30°C for 10min, and during the stirring process, 20mL of green tea extract was added dropwise. After the dropwise addition of green tea extract was completed, the stirring was continued at 350r / min and 30°C for 20min, and the mixed solution after reaction was suction filtered immediately. , and washed with deionized water and absolute ethanol respectively, placed in a vacuum drying oven at 55° C. for 48 hours, and ground to obtain a green synthetic nanometer zero-valent iron-copper bimetallic material.

Embodiment 3

[0032] Weigh 30g of green tea and add 1L of distilled water, heat at 80°C for 1h, cool to room temperature and filter to obtain green tea extract, make 7.2mmol of ferrous chloride, 1.2mmol of copper sulfate, and 1.2mmol of copper chloride to make a total molar concentration of 0.12mol / L For the mixed solution, take 40mL of the mixed solution and stir for 10min at 350r / min at 55°C. During the stirring process, add 32mL of green tea extract dropwise. The mixed solution was suction-filtered immediately, washed with deionized water and absolute ethanol respectively, put into a vacuum drying oven at 50° C. for 20 hours, and ground to obtain a green synthetic nanometer zero-valent iron-copper bimetallic material.

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
clearance rateaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for green synthesis of a nanometer zero-valent iron-copper bi-metal material and application. In one embodiment, the method includes the steps that 20-60 g of green tea is weighed, added in 1 L of distilled water and heated for 1 h at the temperature of 80 DEG, and after cooling is conducted to the room temperature, a green tea extracting solution is obtained after filtering; iron salt and copper salt are made into a mixed solution and stirred for 10 min at the temperature of 30-70 DEG C with the rate of 350 r / min; and the green tea extracting solution is added dropwise in the stirring process; the obtained solution is stirred for 20 min at the temperature of 30-70 DEG C with the rate of 350 r / min, and green synthesis nanometer zero-valent iron-copper suspension liquid is made; and the green synthesis nanometer zero-valent iron-copper suspension liquid is subjected to pumping filtration, green synthesis nanometer zero-valent iron-copper particles are obtained, washed through deionized water and absolute ethyl alcohol and put into a vacuum drying box to be dried for 12-48 h at the temperature of 40-70 DEG, and the green synthesis nanometer zero-valent iron-copper bi-metal material is obtained through grinding. According to the embodiment of the invention, the preparing technology is simple, the green tea extracting solution which is low in cost and easy to obtain serves as a biological activity reducing agent, reaction conditions are moderate, production cost is greatly reduced, and huge popularization and application potential is achieved in the field of repairing underground water and soil which are subjected to chromium pollution.

Description

technical field [0001] The invention relates to the technical field of metal nanoparticles, in particular to a green synthesis method and application for green synthesis of nano-scale zero-valent iron-copper bimetallic materials. Background technique [0002] Nano zero-valent iron has strong reducibility and large specific surface area, and has become a promising new direction in the field of water pollution control and soil remediation. However, due to the strong reducibility of nano-zero-valent iron, corrosion and oxidation reactions will occur in repair applications, forming iron (oxygen) hydroxides, which reduces the repair efficiency of nano-zero-valent iron. Doping some metals with lower activity in the nano-zero-valent iron system to form nano-zero-valent bimetallic materials can promote electron transfer and speed up the reaction rate, and to a certain extent can also prevent the formation of a passivation layer. In the modified metal, copper As a mild hydrogenation...

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): B22F9/24B09C1/08C02F1/70B82Y40/00C02F101/22C02F103/06
CPCB09C1/08B22F9/24B82Y40/00C02F1/705C02F2101/22C02F2103/06
Inventor 祝方马少云
Owner TAIYUAN UNIV OF TECH
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