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Bifunctional material for detecting and adsorbing copper ions as well as synthetic method and application thereof

The technology of a bifunctional material and a synthesis method is applied in the field of copper ion detection, which can solve the problems of difficult recovery, limited adsorption capacity, and increased chemical oxygen consumption in water, and achieves the effect of sensitive selective response and broad industrial application prospects.

Active Publication Date: 2017-06-20
ANQING NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reported copper ion adsorbents mainly include agricultural wastes, inorganic nanomaterials, organic polymers, etc. These copper ion adsorbents have the following disadvantages: (1) The adsorption capacity of agricultural wastes is limited, and they tend to The organic matter is released, causing the chemical oxygen demand (COD) of the water body to increase; (2) Nanomaterial adsorbents are difficult to recycle because of their small particles, which is not conducive to recycling
(3) Organic high molecular polymers have poor water solubility and can only be used in organic solvents or mixed solutions of organic solvents and water; (4) can only absorb and remove copper ions, and cannot simultaneously achieve rapid detection of copper ions
Currently, there are few reports on bifunctional materials for the detection and adsorption of copper ions in water

Method used

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  • Bifunctional material for detecting and adsorbing copper ions as well as synthetic method and application thereof
  • Bifunctional material for detecting and adsorbing copper ions as well as synthetic method and application thereof
  • Bifunctional material for detecting and adsorbing copper ions as well as synthetic method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: Synthetic bifunctional material

[0027] figure 1 It is the chemical reaction route diagram of synthesizing bifunctional material in the present embodiment, as figure 1 As shown, the specific process is as follows:

[0028] (1) Weigh 2.0g sodium alginate (viscosity: 200±20mPa·s) and dissolve it in 98.0g pH5.5 MES (2-(N-morpholine)ethanesulfonic acid) buffer solution, and add 0.15 g 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride, 0.12g N-hydroxysuccinimide and 3.0g carboxylated chitosan were reacted at 25°C for 6h to prepare get the mixture;

[0029] (2) Under stirring conditions, use a 10mL medical syringe to drop the mixed solution prepared in step (1) into 500mL0.25mol / L calcium nitrate solution drop by drop, continue stirring for 30 minutes after dropping, filter, wash with distilled water, and prepare Obtain calcium alginate-chitosan hydrogel;

[0030] (3) Soak the calcium alginate-chitosan hydrogel prepared in step (2) in distilled wa...

Embodiment 2

[0031] Embodiment 2: Synthetic bifunctional material

[0032] (1) Weigh 2.0g of potassium alginate and dissolve it in 98.0g of MES (2-(N-morpholine)ethanesulfonic acid) buffer solution with pH 5.5, and add 0.15g of 1-ethyl-(3-di Methylaminopropyl) carbodiimide hydrochloride, 0.12g N-hydroxysuccinimide and 3.0g carboxylated chitosan were reacted at 25°C for 6h to obtain a mixed solution;

[0033] (2) Under stirring conditions, use a 10mL medical syringe to drop the mixed solution prepared in step (1) into 500mL0.25mol / L calcium nitrate solution drop by drop, continue stirring for 30 minutes after dropping, filter, wash with distilled water, and prepare Obtain calcium alginate-chitosan hydrogel;

[0034] (3) Soak the calcium alginate-chitosan hydrogel prepared in step (2) in distilled water, place it in a vacuum freeze dryer to freeze, and dry in vacuum to obtain a bifunctional material.

[0035] The difference between Example 2 and Example 1 is that sodium alginate is replace...

Embodiment 3

[0036] Embodiment 3: Synthetic bifunctional material

[0037] (1) Weigh 2.0 g of alginic acid and dissolve it in 98.0 g of MES (2-(N-morpholine) ethanesulfonic acid) buffer solution with pH 5.5, and add 0.15 g of 1-ethyl-(3-dimethyl Aminopropyl) carbodiimide hydrochloride, 0.12g N-hydroxysuccinimide and 3.0g carboxylated chitosan were reacted at 25°C for 6h to obtain a mixed solution;

[0038] (2) Under stirring conditions, use a 10mL medical syringe to drop the mixed solution prepared in step (1) into 500mL0.25mol / L calcium nitrate solution drop by drop, continue stirring for 30 minutes after dropping, filter, wash with distilled water, and prepare Obtain calcium alginate-chitosan hydrogel;

[0039] (3) Soak the calcium alginate-chitosan hydrogel prepared in step (2) in distilled water, place it in a vacuum freeze dryer to freeze, and dry in vacuum to obtain a bifunctional material.

[0040] The difference between Example 3 and Example 1 is that sodium alginate is replaced ...

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PUM

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Abstract

The invention discloses a synthetic method of a bifunctional material for detecting and adsorbing copper ions. Biocompatible alginate and chitosan are used as raw materials, carboxy and amino are bonded via condensation reaction, then the reactants are gelatinized in an alkaline-earth metal ion solution, and the reaction product is dried to obtain the bifunctional material. The invention further discloses the bifunctional material and application thereof. The bifunctional material can be used for quickly detecting copper ions in water, is high in sensitivity and adsorption on copper ions and recyclable, is suitable for investigation of water qualities of rivers and lakes, monitoring of drainage water qualities of enterprises and factories as well as detection and treatment of living water, food, human and animal blood and body fluid and various water samples obtained by treating various solid samples, and has wide application value.

Description

technical field [0001] The invention belongs to the field of copper ion detection, and in particular relates to a dual-functional material for detecting and adsorbing copper ions, a synthesis method and application thereof. Background technique [0002] Copper is one of the essential trace elements for the human body, but excessive copper can cause liver damage and lung cancer, so the national drinking water hygiene standard stipulates that the copper content in drinking water must be less than 1.0mg / L. Copper ions in water mainly come from copper mining and smelting, electroplating and electrical industry. It is of great significance to develop functional materials that can quickly detect and adsorb and remove copper ions in water. [0003] At present, the detection of copper ions in water is mainly realized by colorimetric detection of gold or silver nanoparticle solution and instrument detection. The colorimetric detection of gold or silver nanoparticle solution is simpl...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/28C02F1/28B01J20/30G01N21/78C02F101/20
CPCB01J20/24B01J20/28047C02F1/286C02F2101/20G01N21/78G01N2021/775
Inventor 吴根华汪竹青王敏
Owner ANQING NORMAL UNIV
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