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Preparation method of hyperbranched polyester modified silver ion-loaded diatomite

A technology of hyperbranched polyester and diatomite, applied in chemical instruments and methods, other chemical processes, chemical/physical processes, etc., can solve problems such as dye organic pollutant pollution, achieve high adsorption efficiency, low production cost, The effect of good development prospects

Inactive Publication Date: 2020-11-17
夏振兴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the serious problem of dye organic pollutants in the current printing and dyeing wastewater, the present invention provides a preparation method of hyperbranched polyester modified negatively loaded silver ion diatomite with high-efficiency adsorption and catalytic degradation functions, which can realize the enrichment of printing and dyeing Organic pollutants in water bodies, the purpose of photocatalytic degradation of organic pollutants, has potential application value

Method used

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  • Preparation method of hyperbranched polyester modified silver ion-loaded diatomite

Examples

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Embodiment 1

[0028] The preparation of hyperbranched polyester modified loaded silver ion diatomite (CA-Ag@DE) comprises the following steps:

[0029] (1) Preparation of silver ion loaded diatomite (Ag@DE)

[0030] Take 15g of dried diatomite, add 0.20mol / L ascorbic acid solution until the diatomite is completely wetted, dry at 105°C to constant weight, then crush the product and add 0.02% silver nitrate solution until the diatomite is completely wetted. Wet, let stand for 24 hours, and dry at 105°C to obtain silver ion-loaded diatomaceous earth (Ag@DE).

[0031] (2) Preparation of aminosilane-modified diatomite loaded with silver ions (A-Ag@DE)

[0032] Accurately weigh 10 g of diatomite powder loaded with silver ions, put it into 250 mL of NaOH solution with a concentration of 0.5 mol / L, stir at room temperature for 1 h, filter with suction, wash, and dry for later use.

[0033] Accurately weigh 1.5g of activated diatomite powder, put it into a beaker containing 30mL of ethanol solutio...

Embodiment 2

[0037] The preparation of loaded silver ion diatomite (Ag@DE) is the following steps:

[0038] Take 5g of dried diatomite, add 0.25mol / L ascorbic acid solution until the diatomite is completely wetted, dry at 105°C to constant weight, then pulverize the product and add 0.025% silver nitrate solution until the diatomite is completely wetted. Wet it completely, let it rest for 30 hours, and then dry it at 105°C to obtain silver ion-loaded diatomite (Ag@DE);

Embodiment 3

[0040] The preparation of hyperbranched polyester modified loaded silver ion diatomite (CA-Ag@DE) comprises the following steps:

[0041] (1) Preparation of silver ion loaded diatomite (Ag@DE)

[0042] Take 10g of dried diatomite, add 0.20mol / L ascorbic acid solution until the diatomite is completely wetted, dry at 105°C to constant weight, then crush the product and add 0.02% silver nitrate solution until the diatomaceous The soil is completely wetted, and after 24 hours of rest, it is dried at 105°C to obtain silver ion-loaded diatomaceous earth (Ag@DE).

[0043] (2) Preparation of aminosilane-modified diatomite loaded with silver ions (A-Ag@DE)

[0044] Accurately weigh 10 g of silver ion-loaded diatomite powder, put it into 250 mL of NaOH solution with a concentration of 0.5 mol / L, stir at room temperature for 1 h, filter with suction, wash, and dry for later use.

[0045]Accurately weigh 3g of activated diatomite powder, put it into a beaker containing 60mL of ethanol s...

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Abstract

The invention provides a preparation method of hyperbranched polyester modified silver ion-loaded diatomite, which comprises the following steps: modifying a silver ion-loaded diatomite by using aminosilane, and finally grafting hyperbranched polyester by using amidation to obtain the hyperbranched polyester modified silver ion-loaded diatomite material. The material has strong adsorption capacityon heavy metal ions and organic pollutants in printing and dyeing wastewater, has the performance of photocatalytic degradation of the organic pollutants, can realize enrichment and degradation of rhodamine B in polluted water, and has potential practical application value.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a preparation method of hyperbranched polyester modified negative-loaded silver ion diatomite. Background technique [0002] Dye organic pollutants are common water environmental pollutants, which can be enriched in the human body through the biological chain, thereby affecting the health of the human body, and seriously causing cancer. Therefore, the treatment of dye organic pollutants in printing and dyeing wastewater is imminent. At present, the most commonly used method to deal with such pollutants is the adsorption method, but the adsorption capacity and degradation capacity are relatively weak. Therefore, the development of an efficient, targeted, and degradable pollutant treatment technology has become a current focus. [0003] Diatomaceous earth is a porous material formed from the remains of diatoms, which has the advantages of large specific surfa...

Claims

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Application Information

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IPC IPC(8): C08G83/00B01J20/14B01J20/30B01J20/26C02F1/28B01J31/06
CPCC08G83/001B01J20/262B01J20/14C02F1/285B01J31/069C02F2103/30C02F2101/38C02F2101/36C02F2305/10B01J35/39
Inventor 夏振兴
Owner 夏振兴
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