Adsorption and degradation material as well as preparation method and application thereof

An adsorption degradation and reaction technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, and other chemical processes, etc., can solve the problems of limited adsorption capacity and excessive silver concentration, so as to enhance adsorption effect, reduce potential harm, The effect of improving stability

Inactive Publication Date: 2019-12-13
LUDONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adsorption capacity of Ag-MONTs to NDMA is limited, and the concentration of silver in the water after adsorption exceeds the standard

Method used

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  • Adsorption and degradation material as well as preparation method and application thereof
  • Adsorption and degradation material as well as preparation method and application thereof
  • Adsorption and degradation material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The preparation method of embodiment 1 adsorption degradation material

[0039](1) Dissolve 0.034g of silver nitrate and 0.021g of 1,2,3-benzenetricarboxylic acid in 7mL of water, then add 0.031g of 4,4-bipyridine to it, ultrasonically dissolve, then add 295μL of 1mol / L KOH solution to adjust the pH value to 6.0, and finally the mixture was transferred to a 25mL polytetrafluoroethylene autoclave. The initial temperature was 30°C, raised to 160°C in 4 hours, maintained at 160°C for 36 hours, and then cooled to 30°C in 6 hours. Alternately washing with ethanol and water for 2-3 times, and drying to obtain metal-organic nanotube material Ag-MONTs.

[0040] (2) Add 5ml of anaerobic deionized water to a 50ml Erlenmeyer flask, then add FeSO 4 ·7H 2 O and the Ag-MONTs powder prepared in step (1) (the mass ratio of nZVI to Ag-MONTs is 1:1), stirred at room temperature for about 3h to disperse. Afterwards, under nitrogen protection, 5ml (16g / L) of newly configured NaBH 4 Th...

Embodiment 2

[0041] The preparation method of embodiment 2 adsorption degradation material

[0042] (1) Dissolve 0.034g of silver nitrate and 0.021g of 1,2,3-benzenetricarboxylic acid in 7mL of water, then add 0.031g of 4,4-bipyridine to it, ultrasonically dissolve, then add 295μL of 1mol / L KOH solution to adjust the pH value to 6.0, and finally the mixture was transferred to a 25mL polytetrafluoroethylene autoclave. The initial temperature was 30°C, raised to 160°C in 3 hours, maintained at 160°C for 48 hours, and then cooled to 30°C in 12 hours. Alternately washing with ethanol and water for 2-3 times, and drying to obtain metal-organic nanotube material Ag-MONTs.

[0043] (2) Add 10ml of oxygen-free deionized water to a 50ml Erlenmeyer flask, then add FeSO 4 ·7H 2 O and the Ag-MONTs powder prepared in step (1) (the mass ratio of nZVI to Ag-MONTs is 1:2), stirred at room temperature for about 4h to disperse. Afterwards, under nitrogen protection, 10ml (8g / L) of newly configured NaBH ...

Embodiment 3

[0044] The preparation method of embodiment 3 adsorption degradation material

[0045] (1) Dissolve 0.034g of silver nitrate and 0.021g of 1,2,3-benzenetricarboxylic acid in 7mL of water, then add 0.031g of 4,4-bipyridine to it, ultrasonically dissolve, then add 295μL of 1mol / L KOH solution to adjust the pH value to 6.0, and finally the mixture was transferred to a 25mL polytetrafluoroethylene autoclave. The initial temperature was 30°C, raised to 160°C in 2 hours, maintained at 160°C for 60 hours, and then cooled to 30°C in 18 hours. Alternately washing with ethanol and water for 2-3 times, and drying to obtain metal-organic nanotube material Ag-MONTs.

[0046] (2) Add 20ml of oxygen-free deionized water to a 50ml Erlenmeyer flask, then add FeSO 4 ·7H 2 O and the Ag-MONTs powder prepared in step (1) (the mass ratio of nZVI to Ag-MONTs is 1:5), stirred at room temperature for about 6h to disperse. Afterwards, under nitrogen protection, 20ml (4g / L) of newly configured NaBH ...

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Abstract

The invention relates to an adsorption and degradation material as well as a preparation method and application thereof. The adsorption and degradation material is formed by compounding nano zero-valent iron and a Ag-MONTs material, and the Ag-MONTs material is used as a carrier. The Ag-MONTs material is prepared from the following raw materials: 1, 2, 3-trimellitic acid, 4, 4-dipyridyl and a metal salt of silver. The adsorption capacity is high, the amount of residual silver and iron in the water body is small, and secondary pollution to the water body is avoided.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to an adsorption degradation material and its preparation method and application. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Nitrosamines (NAs), as a new type of nitrogenous disinfection by-products, are produced in chlorine, chloramine and ozone disinfection. There are 9 kinds of NAs in water, and the main NAs detected so far are N-dimethylnitrosamine (NDMA). The concentration of NDMA in water is only at the ng / L level, and it has attracted great attention from scholars at home and abroad because of its potential high risk of carcinogenicity. For ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/70B01J20/22B01J20/30C02F101/38
CPCB01J20/02B01J20/223B01J2220/46B01J2220/4806B01J2220/4812C02F1/285C02F1/70C02F1/705C02F2101/38
Inventor 张贝贝刘军深高学珍刘桂静刘冬
Owner LUDONG UNIVERSITY
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