Disinfection material with nanometer zero-valent iron as main disinfection component and preparation method thereof

A nano-zero-valent iron and nano-particle technology, which is applied in botany equipment and methods, disinfectants, chemicals for biological control, etc., can solve the problems of weak disinfection ability of disinfectants and easy oxidation

Inactive Publication Date: 2018-10-12
中国人民解放军军事科学院防化研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems that current disinfectants based on nano-zero-valent iron have weak disinfection ability and are easily oxidized in the air, the present invention provides new disinfectant materials and disinfectants with nano-zero-valent iron as the main active ingredient, specifically including The following aspects:

Method used

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  • Disinfection material with nanometer zero-valent iron as main disinfection component and preparation method thereof
  • Disinfection material with nanometer zero-valent iron as main disinfection component and preparation method thereof
  • Disinfection material with nanometer zero-valent iron as main disinfection component and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] Example 1 Nano zero-valent Fe / Ni composite particles eliminate malathion in water

[0109] Put 300 mesh, analytically pure iron powder with a purity greater than 99.9% (Nanjing Welding Rod Iron Powder Factory), use 26mm stainless steel balls as grinding balls, and the ball-to-material ratio is 10:1 (weight ratio of grinding balls to iron powder), and put them into a new ball mill (XPEX8000M), at 250rpm, using intermittent (ball milling for 1 hour, intermittent 0.5 hour) ball milling for 10.5 hours, the nanoparticle tracking analysis (NTA) method measures the obtained iron grain size is about 140-300nm, that is, nano-scale iron pink. The above-mentioned nanoscale iron powder is immersed in the mixed solution of 0.2mol / L HCl and acetic acid through deoxidation treatment in the ratio of 1g:10mL. The volume ratio of hydrochloric acid and acetic acid in this mixed solution is 1:1 (the oxygen content is less than 0.5mg / L), at N 2 Under protection and accompanied by shaking...

Embodiment 2

[0111] Example 2 Elimination of organochlorine pesticide DDT by using nanometer zero-valent Fe / Ag composite particles

[0112] Put 300 mesh, analytically pure iron powder with a purity greater than 99.9%, use 26mm stainless steel balls as grinding balls, and the ball-to-material ratio is 20:1, and put it into a planetary ball mill at 250rpm, using a batch type (ball milling for 1 hour, intermittent 0.5 hours) After ball milling for 7 hours, the obtained iron grain size is about 160-400nm as measured by nanoparticle tracking analysis (NTA), that is, nanoscale iron powder is obtained. The above-mentioned nanoscale iron powder is immersed in a deoxidized 0.1mol / L HCl and acetic acid solution (the volume ratio of hydrochloric acid and acetic acid is 1:1) in the ratio of 1g:20mL (oxygen content is less than 0.5mg / L), in N 2 Under protection and accompanied by shaking at a shaking speed of 400rpm for 8min, filter, wash with distilled water with an oxygen content of less than 0.5mg / ...

Embodiment 3

[0114] Example 3 Utilizes zero-valent Fe / Pd bimetallic particles to eliminate nitro compounds TNT in water

[0115] With 300 meshes, analytically pure iron powder with a purity greater than 99.9%, use 26mm stainless steel balls as grinding balls, and the ball-to-material ratio is 20:1, put them into a planetary ball mill, and use intermittent ball milling at 200rpm (ball milling for 1 hour, intermittent 0.5 hours) ) ball milled for 12 hours, and the diameter of the obtained nano-iron particles was measured to be about 120-268nm. The above-mentioned nanoscale iron powder is immersed in the deoxidized 0.5mol / L HCl and acetic acid solution in the ratio of 1g:5mL, and the volume ratio of hydrochloric acid and acetic acid in this mixed solution is 1:1 (the oxygen content is less than 0.5mg / L L), in N 2 Under protection and accompanied by shaking at a shaking speed of 400rpm for 5min, filter, rinse with distilled water with an oxygen content of less than 0.5mg / L to neutrality, and ...

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Abstract

The invention relates to a disinfecting material taking nano zero-valent iron as the main disinfecting component. The disinfecting material comprises a core formed by nano zero-valent iron, a shell layer formed by auxiliary metal components, and a surface film layer formed by a surfactant or an organic polymer. The invention further relates to a preparation method of the disinfecting material. The disinfecting material can be used to decompose, degrade, convert, or eliminate toxic chemicals or toxic compounds.

Description

technical field [0001] The invention relates to a disinfectant, in particular to a disinfectant material with nanometer zero-valent iron as the main disinfectant component. The present invention also relates to the preparation method of the disinfection material, and the use of the disinfection material for decomposing or eliminating toxic compounds and preparing disinfection products. Background technique [0002] Nano-ZVI particles are usually used to reductively degrade halogenated organic compounds and nitrates in groundwater and to reduce and fix heavy metal ions such as As in groundwater. 5+ , As 3+ , Cr 6+ Wait. [0003] The disinfection of some highly toxic biochemical weapons, such as sarin and mustard gas, has always been a difficult problem in the field of military decontamination. Various decontamination methods have corresponding problems: conventional chlorine-containing disinfection methods have the disadvantages of large disinfection dose, strong corrosio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D3/37A01N59/16A01P1/00A01P3/00A62D101/26A62D101/22A62D101/28
Inventor 史喜成李静高晓强董艳春白书培王东辉张忠良宋华
Owner 中国人民解放军军事科学院防化研究院
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