Fe-MCM-41/CA blend film and preparing method and application thereof

A blended membrane, fe-mcm-41 technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of difficult recycling and reuse, easy loss, etc., and achieve stable physical and chemical properties, not easy to lose , the effect of simple operation

Inactive Publication Date: 2017-01-04
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when Fe-MCM-41 is used alone, it is easy to lose, and it is not easy to recycle and reuse

Method used

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  • Fe-MCM-41/CA blend film and preparing method and application thereof
  • Fe-MCM-41/CA blend film and preparing method and application thereof
  • Fe-MCM-41/CA blend film and preparing method and application thereof

Examples

Experimental program
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preparation example Construction

[0027] A preparation method of Fe-MCM-41 / CA blended film includes the following steps:

[0028] 1) Dissolve sodium silicate, ferric nitrate and template in water to obtain corresponding solutions;

[0029] 2) Mix the ferric nitrate solution and the sodium silicate solution evenly, add the acid until the sol appears in the solution, stir well, then add the template agent solution, stir evenly to obtain the mixture, adjust the pH value to 9-11, hydrothermally crystallize, The crystalline product is separated, washed, dried, calcined and ground to obtain Fe-MCM-41 molecular sieve;

[0030] 3) Mix the porogen and the solvent evenly, add Fe-MCM-41 molecular sieve, stir evenly, then add cellulose acetate, stir evenly, and defoam to obtain a casting liquid;

[0031] 4) Pour the casting liquid on the glass plate, scrape it with a spatula to form a thin liquid layer of uniform thickness, and then immerse the glass plate in deionized water in the coagulation bath to gel into a film to obtain Fe...

Embodiment 1

[0043] Preparation of Fe-MCM-41 molecular sieve:

[0044] 1) Prepare Na separately 2 SiO 3 Solution (28.7g Na 2 SiO 3 ·9H 2 O+65mL deionized water), Fe(NO 3 ) 3 Solution (0.202g Fe(NO 3 ) 3 ·9H 2 O+10mL deionized water) and CTAB solution (7.28g CTAB+25mL deionized water);

[0045] 2) Add Fe(NO 3 ) 3 Solution add Na 2 SiO 3 In the solution, stir for 15min, then add 2mol·L dropwise -1 Sulfuric acid solution until sol appears, continue to stir for 30 minutes;

[0046] 3) Add CTAB solution, stir for 30min, adjust pH=10.5~11 to obtain a mixed solution, crystallize at 145℃ for 48h, cool to room temperature, filter and wash, and dry the washed crystalline product under vacuum at 80℃ and flatten , Calcined in a muffle furnace at 550°C for 5 hours and ground to obtain Fe-MCM-41 molecular sieve.

[0047] Preparation of Fe-MCM-41 / CA blend film:

[0048] 1) Dissolve 0.6g polyvinylpyrrolidone in 51.6g N,N-dimethylacetamide to obtain a N,N-dimethylacetamide solution of polyvinylpyrrolidone;

[0049] ...

Embodiment 2

[0057] Preparation of Fe-MCM-41 molecular sieve:

[0058] The same as in Example 1.

[0059] Preparation of Fe-MCM-41 / CA blend film:

[0060] 1) Dissolve 0.6g of polyvinylpyrrolidone in 54.0g of N,N-dimethylacetamide to obtain an N,N-dimethylacetamide solution of polyvinylpyrrolidone;

[0061] 2) Add 0.48g Fe-MCM-41 and ultrasonic for 30min;

[0062] 3) Add 7.2g of cellulose acetate (CA), stir at 60°C for 6 hours, and then degas at 60°C for 12 hours to obtain a casting solution;

[0063] 4) Pour the casting liquid on the smooth glass, scrape it with a doctor blade, and then form a film in a coagulation bath of deionized water to obtain a Fe-MCM-41 / CA blend film.

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Abstract

The invention discloses a Fe-MCM-41 / CA blend film and a preparing method and application thereof. The preparing method of the blend film includes the following steps that 1, sodium silicate, ferric nitrate and a template agent are dissolved into water to obtain a corresponding solution; 2, a Fe-MCM-41 molecular sieve is prepared; 3, a pore-foaming agent and solvent are mixed uniformly, the Fe-MCM-41 molecular sieve is added and stirred uniformly, cellulose acetate is added and stirred uniformly, and film casting liquid is obtained through defoaming; the film casting liquid is poured into a glass plate and scraped into a liquid thin layer with uniform thickness through a scraper, the glass plate is soaked in coagulating bath deionized water, and gelatinization is carried out on the formed film to obtain the Fe-MCM-41 / CA blend film. The Fe-MCM-41 / CA blend film is prepared through a physical blending / phase inversion method and is stable in physico-chemical property, the doped Fe-MCM-41 is not prone to loss, and adsorbing removal of norfloxacin in water can be effectively achieved. The preparing method is easy to operate and low in cost.

Description

Technical field [0001] The invention relates to a Fe-MCM-41 / CA blended film and its preparation method and application. Background technique [0002] The full name of PPCPs is Pharmaceutical and Personal Care Products. It is an emerging pollutant with various types, including various antibiotics, synthetic musk, analgesics, antihypertensive drugs, contraceptives, hypnotics, weight loss pills, hair sprays, hair dyes and antiseptics 剂 etc. Many PPCPs components have strong biological activity, optical rotation and polarity, and most of them exist in the environment in trace concentrations. The use of veterinary medicine, agricultural medicine, human medicine and cosmetics are the main ways it is introduced into the environment. Since these substances are continuously introduced into the environment while being removed, they are also called "pseudo-persistent" pollutants. Urban sewage is an important resource, and its treatment quality will directly affect human health and the wat...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F1/44B01J20/24B01D71/16B01D69/14B01D67/00C02F101/34C02F101/36C02F101/38
CPCC02F1/28B01D67/0079B01D69/142B01D69/147B01D69/148B01D71/16B01J20/02B01J20/103B01J20/24C02F1/44C02F2101/34C02F2101/36C02F2101/38
Inventor 李来胜周佳璐刘佩红卢平张秋云李旭凯
Owner SOUTH CHINA NORMAL UNIVERSITY
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