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Preparation method and application of organic-inorganic hybrid amino polymer adsorbent for adsorbing dye and heavy metal ions

A heavy metal ion, amino polymer technology, applied in the field of nano functional materials and water treatment, can solve the problems of small adsorption capacity of adsorbent, cumbersome process, small dye adsorption capacity, etc., and achieve outstanding adsorption effect, high adsorption capacity, and adsorption effect. high effect

Inactive Publication Date: 2016-05-04
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Journal of Hazardous Materials in 2011, volume 185, pages 1124~1130 reported a dual-functional magnetic adsorbent, which was modified with N-[3-(trimethoxysilyl)propyl]ethylenediamine to make its surface with a Quantitative amino group, the adsorption capacity of anionic dye Reactive Black 5 reaches 217mg / g. The advantage of this adsorbent is that it can be separated from the aqueous solution by magnetic separation technology after adsorbing the dye. The disadvantage is the adsorption capacity of the dye smaller
Patents CN103285817A, CN104190371A, CN103157448A, CN102600809A, CN102029144A have also reported that amino-modified materials are used for the adsorption of anionic dyes and heavy metal ions, but the adsorption capacity of these adsorbents is still small and cannot meet the requirements of efficient adsorption
Recently, Chemical Engineering Journal reported a micro-nano structured polyethersulfone / polyethyleneimine affinity membrane material in 2012, volume 197, pages 88-100. The adsorption amount of ions did not meet the ideal requirements, and the preparation method is to prepare the spinning solution first, then perform electrospinning, and finally need subsequent cross-linking, the process is relatively cumbersome

Method used

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  • Preparation method and application of organic-inorganic hybrid amino polymer adsorbent for adsorbing dye and heavy metal ions
  • Preparation method and application of organic-inorganic hybrid amino polymer adsorbent for adsorbing dye and heavy metal ions

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Embodiment 1

[0025] A preparation method for an organic-inorganic hybrid amino polymer adsorbent for adsorption of dyes and heavy metal ions, comprising the following steps:

[0026] ① In a 50 ml beaker, ultrasonically disperse 0.2 g of hexachlorocyclotriphosphazene into 20 ml of acetonitrile to make a hexachlorocyclotriphosphazene solution;

[0027] ②In a 250ml single-necked round bottom flask, ultrasonically disperse 0.345g of polyethyleneimine into 80ml of acetonitrile to make polyethyleneimine solution;

[0028] ③Add the hexachlorocyclotriphosphazene solution in the beaker to the polyethyleneimine solution, and mix evenly to obtain a mixed solution;

[0029] ④ Add 3 g of triethylamine dropwise to the mixed solution, react in ultrasonic at 25°C (ultrasonic power is 100 watts, ultrasonic frequency is 40 kHz) for 2 hours, centrifuge, wash with acetone, and then wash with deionized water , vacuum drying at 60° C. for 24 hours to obtain the organic-inorganic hybrid amino polymer adsorbent....

Embodiment 2

[0033] A preparation method for an organic-inorganic hybrid amino polymer adsorbent for adsorption of dyes and heavy metal ions, comprising the following steps:

[0034] ① In a 50 ml beaker, ultrasonically disperse 0.1 g of hexachlorocyclotriphosphazene into 20 ml of acetonitrile to make a hexachlorocyclotriphosphazene solution;

[0035] ②In a 250ml single-necked round bottom flask, ultrasonically disperse 0.15g of polyethyleneimine into 80ml of acetonitrile to make polyethyleneimine solution;

[0036] ③Add the hexachlorocyclotriphosphazene solution in the beaker to the polyethyleneimine solution, and mix evenly to obtain a mixed solution;

[0037] ④ The mixed solution was ultrasonically reacted at 20°C (ultrasonic power is 100 watts, ultrasonic frequency is 40 kHz) for 5 hours, centrifuged, washed with acetone and deionized water, and vacuum dried at 80°C for 20 hours to obtain The organic-inorganic hybrid amino polymer adsorbent.

Embodiment 3

[0039] A preparation method for an organic-inorganic hybrid amino polymer adsorbent for adsorption of dyes and heavy metal ions, comprising the following steps:

[0040] ① In a 50 ml beaker, ultrasonically disperse 0.4 g of hexachlorocyclotriphosphazene into 20 ml of acetonitrile to make a hexachlorocyclotriphosphazene solution;

[0041] ②In a 250ml single-necked round bottom flask, ultrasonically disperse 1.38g of polyethyleneimine into 80ml of acetonitrile to make polyethyleneimine solution;

[0042] ③Add the hexachlorocyclotriphosphazene solution in the beaker to the polyethyleneimine solution, and mix evenly to obtain a mixed solution;

[0043] ④ Add 1 gram of sodium hydroxide dropwise to the mixed solution, react in ultrasonic at 50°C (ultrasonic power is 100 watts, ultrasonic frequency is 40 kHz) for 1 hour, centrifuge, wash with acetone, and then wash with deionized water , vacuum drying at 30° C. for 22 hours to obtain the organic-inorganic hybrid amino polymer adsorb...

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Abstract

The invention relates to a preparation method of an organic-inorganic hybrid amino polymer adsorbent for adsorbing dye and heavy metal ions. The preparation method comprises the following steps: (1) dispersing phosphonitrilic chloride trimer into acetonitrile to prepare a phosphonitrilic chloride trimer solution; (2) dispersing polyethyleneimine into acetonitrile to prepare a polyethyleneimine solution; (3) uniformly mixing the phosphonitrilic chloride trimer solution and the polyethyleneimine solution to obtain a mixed solution; (4) adding an alkaline catalyst into the mixed solution, carrying out reaction in an ultrasonic condition for 1 to 5 hours at 20 to 50 DEG C, centrifugally separating, washing, and vacuum-drying to obtain the organic-inorganic hybrid amino polymer adsorbent. The adsorbent prepared by the method has high adsorption capacity and high adsorption efficiency; the adsorption effect is prominent and far higher than that of the existing amino adsorbent; and more importantly, the adsorption selectivity is excellent in a mixed dye solution.

Description

technical field [0001] The invention belongs to the technical field of nanometer functional materials and water treatment, and in particular relates to a preparation method and application of an organic-inorganic hybrid amino polymer adsorbent used for adsorption of dyes and heavy metal ions. Background technique [0002] With the development of industry and the improvement of people's material life, the damage to the environment caused by human activities is becoming more and more serious. Among them, industries related to dyes and heavy metals, including food, cosmetics, textiles, leather, paper and medicine, play an important role in the improvement of people's material life, but the random discharge of a large amount of wastewater containing dyes and heavy metal ions has given a Both water bodies and human health have brought serious hazards. Therefore, the removal of dyes and heavy metal ions in water is imminent. In recent years, the purification technology of dye an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F1/62
CPCB01J20/267B01J2220/46C02F1/288C02F2101/16C02F2101/20C02F2103/30
Inventor 付建伟许群朱建华王凯王明环
Owner ZHENGZHOU UNIV
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