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Preparation method and application of a new type of nano-loaded zero-valent iron material

A nano-zero-valent iron, a new type of technology, applied in the field of nano-materials, can solve the problems of excessive Al in drinking water, etc., and achieve the effects of mild synthesis conditions, enhanced treatment adsorption effect, and low raw material cost

Inactive Publication Date: 2020-10-09
SHANDONG ANALYSIS & TEST CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, MIL-96 is easy to precipitate Al in water, causing Al to exceed the standard in drinking water

Method used

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  • Preparation method and application of a new type of nano-loaded zero-valent iron material
  • Preparation method and application of a new type of nano-loaded zero-valent iron material
  • Preparation method and application of a new type of nano-loaded zero-valent iron material

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Experimental program
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Effect test

Embodiment 1

[0035] Embodiment 1 The preparation method of novel loading nanometer zero valent iron material

[0036] (1) Weigh 2.088g of aluminum nitrate nonahydrate and 0.117g of trimesic acid, then add 10mL of deionized water and 10mL of N,N-dimethylformamide respectively, stir and dissolve, and react the mixture at 110°C for 5h After centrifugal cleaning and drying, the nanoscale metal-organic material MIL-96 is obtained.

[0037] (2) Ferrous sulfate heptahydrate is dissolved in 5mL of anaerobic water, is stirred to dissolving completely; The metal-organic material MIL-96 that makes in the step (1) is joined in ferrous sulfate solution, wherein nano-zero valent iron and The mass ratio of MIL-96 is 1:1, and magnetic stirring is continued at room temperature for 3 h; then sodium borohydride solution (concentration is 13 g / L, volume is 5 mL) is added dropwise under the protection of nitrogen, and the reaction is continued for 1 h. Water ethanol and deionized water (deoxygenated) were was...

Embodiment 2

[0038] Embodiment 2 The preparation method of novel loading nanometer zero valent iron material

[0039] (1) Weigh 2.088g of aluminum nitrate nonahydrate and 0.117g of trimesic acid, then add 10mL of deionized water and 10mL of N,N-dimethylformamide respectively, stir and dissolve, and react the mixture at 100°C for 6h After centrifugal cleaning and drying, the nanoscale metal-organic material MIL-96 is obtained.

[0040] (2) Ferrous sulfate heptahydrate is dissolved in 20mL of anaerobic water, is stirred to dissolving completely; The metal-organic material MIL-96 that makes in the step (1) is joined in ferrous sulfate solution, wherein nano-zero valent iron and The mass ratio of MIL-96 is 1:10, continue magnetic stirring at room temperature for 8h; Water ethanol and deionized water (deoxygenated) were washed alternately, vacuum freeze-dried for 30 hours, and a new nano-loaded zero-valent iron material was obtained.

Embodiment 3

[0041] Embodiment 3 The preparation method of novel loading nanometer zero valent iron material

[0042](1) Weigh 2.088g of aluminum nitrate nonahydrate and 0.117g of trimesic acid, then add 10mL of deionized water and 10mL of N,N-dimethylformamide respectively, stir and dissolve, and react the mixture at 150°C for 10h After centrifugal cleaning and drying, the nanoscale metal-organic material MIL-96 is obtained.

[0043] (2) Dissolve ferrous sulfate heptahydrate in 50mL of anaerobic water, stir until fully dissolved; the metal organic material MIL-96 prepared in step (1) is added in the ferrous sulfate solution, wherein nanometer zero valent iron and The mass ratio of MIL-96 is 1:5, and magnetic stirring is continued at room temperature for 5 h; then sodium borohydride solution (concentration is 15 g / L, volume is 50 mL) is added dropwise under the protection of nitrogen, and the reaction is continued for 3 h. Water ethanol and deionized water (deoxygenated) were washed alter...

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Abstract

The invention relates to the technical field of nano-materials, in particular to a preparation method and application of a novel nano-scale zero-valent iron-loaded material. The method comprises the following steps: dissolving ferrous sulphate in oxygen-free water, and stirring until the ferrous sulphate is completely dissolved; adding a prepared nano-scale metal organic material MIL-96 into ferrous sulphate solution, and continuing performing magnetic stirring at a room temperature; then, adding sodium borohydride solution dropwise under the protection of nitrogen, continuing reacting, and washing a reaction liquid alternately by using absolute ethyl alcohol and deionized water (with oxygen removed); performing vacuum freezing-drying for 24 to 36 hours to obtain the novel nano-scale zero-valent iron-loaded material, namely, nZVI@MIL-96. According to the preparation method and the application of the novel nano-scale zero-valent iron-loaded material, the nano-scale metal organic material is taken as a carrier material of nano-scale zero-valent iron for the first time; the novel nano-scale zero-valent iron-loaded material can be highly efficiently applied to removing halonitromethanedisinfecting by-products in drinking water or sewage; moreover, the defect that single materials, Al and Fe, are dissolved easily is overcome; secondary pollution of the drinking water cannot be caused.

Description

technical field [0001] The invention relates to the technical field of nanometer materials, in particular to a preparation method and application of a novel loaded nanometer zero-valent iron material. Background technique [0002] As an inevitable product in the disinfection process of drinking water and reused sewage, disinfection by-products will pose potential health risks to humans and organisms in receiving water due to their teratogenic, carcinogenic, and mutagenic effects. As a new type of disinfection by-products, nitrogen-containing disinfection by-products, although the content is very low, are several orders of magnitude more toxic than carbon-containing disinfection by-products. Halogenated nitromethanes (HNMs) are a class of nitrogenous disinfection by-products that are often detected in drinking water, sewage or swimming pool water. At present, there are 9 kinds of HNMs detected in water bodies, among which trichloropicrin (TCNM) is the earliest HNMs found in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/30C02F1/28C02F101/36C02F101/38
CPCB01J20/223C02F1/285C02F2101/36C02F2101/38
Inventor 张贝贝赵汝松徐桂菊李磊王晓利李娜
Owner SHANDONG ANALYSIS & TEST CENT