A kind of preparation method of nano-iron powder material with continuous controllable activity

A nano-iron powder, sustainable technology, applied in the fields of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problem of not taking into account the sustainability of nano-iron powder activity, and achieves low cost and solution. Agglomeration, process controllable effect

Active Publication Date: 2020-07-28
TSINGHUA UNIV
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing studies on the embedding of nano-iron powders did not take into account the problem of poor activity persistence of nano-iron powders.

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
  • A kind of preparation method of nano-iron powder material with continuous controllable activity
  • A kind of preparation method of nano-iron powder material with continuous controllable activity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preparation method of the activity-sustainable nano-iron powder material in this embodiment includes the following steps:

[0023] (1) In a gas atmosphere other than oxygen and under stirring conditions, add 0.25g of acrylonitrile-butadiene-styrene terpolymer and 0.0025g of ethyl cellulose into 60mL of ethyl acetate, stir at 300rpm Under, fully dissolve acrylonitrile-butadiene-styrene terpolymer and ethyl cellulose;

[0024] (2) Get 0.25g of nano-iron powder and join in the polymer ethyl acetate solution in step (1), and disperse evenly under sufficient stirring conditions to obtain a mixed solution of nano-iron powder and polymer ethyl acetate solution;

[0025] (3) Add 60 mL of polyethylene glycol 400 dropwise to the mixed solution obtained in step (2), causing phase separation of acrylonitrile-butadiene-styrene terpolymer and ethyl cellulose, and wait until the dropwise addition is completed Finally, add 250ml of n-heptane, stop stirring, and after standing stil...

Embodiment 2

[0030] The preparation method of the activity-sustainable nano-iron powder material in this embodiment includes the following steps:

[0031] (1) In a gas atmosphere environment other than oxygen and under stirring conditions, 0.25g of acrylonitrile-butadiene-styrene terpolymer and 0.0025g of ethyl cellulose are added to 60mL of toluene, and at a stirring speed of 300rpm, Fully dissolve acrylonitrile-butadiene-styrene terpolymer and ethyl cellulose;

[0032] (2) Get 0.25g nano-iron powder and join in the polymer toluene solution in step (1), disperse evenly under the sufficient stirring condition, obtain the mixed solution of nano-iron powder and polymer toluene solution;

[0033] (3) Add 60 mL of polyethylene glycol 400 dropwise to the mixed solution obtained in step (2), causing phase separation of acrylonitrile-butadiene-styrene terpolymer and ethyl cellulose, and wait until the dropwise addition is completed Finally, add 250ml of n-heptane, stop stirring, and after standi...

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 preparation method of a nano-iron powder material with controllable activity continuity, which uses acrylonitrile-butadiene-styrene terpolymer and ethyl cellulose to achieve embedding of nano-iron powder through phase separation , and then impregnated with ethyl cellulose solvent to realize the pore transformation of the embedded nano-iron powder particles, endowing the embedded nano-iron powder particles with the continuity of activity, and the activity can be achieved by the ratio of the two polymers Sustainability is controllable. The method of the invention can not only solve the problem of agglomeration of the nano-iron powder particles, but also realize the controllability of the activity continuity of the nano-iron powder.

Description

technical field [0001] The invention belongs to a nano material application, in particular to a preparation method of a nano-iron powder material with continuously controllable activity, which can be used to solve the problem of the reaction medium nano-iron powder in the repair technology of the groundwater permeable reaction wall (PRB). Problems of agglomeration and too fast reactivity in the above applications. Background technique [0002] Groundwater is an important component of human drinking water, even the main source of drinking water for people in arid areas. Therefore, the safety of groundwater quality is closely related to human health. However, with the intensification of human production activities, there are more and more reports of groundwater pollution accidents in the world. Groundwater pollution has become one of the most serious problems faced by human beings in the 21st century. [0003] Permeable reactive wall (PRB) is an important and effective ground...

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 Patents(China)
IPC IPC(8): B22F1/00B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00B22F1/102
Inventor 李淼孟凡宾刘翔
Owner TSINGHUA UNIV
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