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Porous membrane mixed by 1,4-dihydroxy anthraquinone and cellulose, preparation method and usage

A technology of dihydroxyanthraquinone and porous membrane, applied in 1 field, to achieve good selectivity effect

Inactive Publication Date: 2013-05-08
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Compared with these existing detection methods, although the fluorescence analysis method has the advantages of high sensitivity, good selectivity, and simple data acquisition, it suffers from the lack of suitable fluorescent sensing materials to achieve rapid detection of low-concentration divalent copper ions

Method used

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  • Porous membrane mixed by 1,4-dihydroxy anthraquinone and cellulose, preparation method and usage
  • Porous membrane mixed by 1,4-dihydroxy anthraquinone and cellulose, preparation method and usage
  • Porous membrane mixed by 1,4-dihydroxy anthraquinone and cellulose, preparation method and usage

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Experimental program
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Effect test

Embodiment 1

[0031] The concrete steps of preparation are:

[0032] Step 1, first mix cellulose acetate, 1,4-dihydroxyanthraquinone and solvent according to the ratio of 7.5wt% by weight: 0.1wt%: 92.4wt%; wherein, the solvent is a mixed solution of acetone and deionized water, A spinning solution is obtained. Then the spinning solution is placed on the electrospinning machine for 3min electrospinning, wherein the distance between the positive and negative electrodes during electrospinning is 10cm, the electrostatic voltage is 26kV, and the flow rate of the spinning solution is 0.001mL / s , the nanofibers were collected by a grounded aluminum plate, resulting in a porous membrane composed of cellulose acetate nanofibers doped with 1,4-dihydroxyanthraquinone.

[0033] In step 2, the porous membrane composed of cellulose acetate nanofibers doped with 1,4-dihydroxyanthraquinone is soaked in sodium hydroxide solution for 24 hours to obtain a film similar to figure 1 Shown is a porous membrane ...

Embodiment 2

[0035] The concrete steps of preparation are:

[0036] Step 1, first mix cellulose acetate, 1,4-dihydroxyanthraquinone and solvent according to the ratio of 7.8wt% by weight: 0.1wt%: 92.1wt%; wherein, the solvent is a mixed solution of acetone and deionized water, A spinning solution is obtained. Then the spinning solution is placed on the electrospinning machine for 3.5 minutes of electrospinning, wherein the distance between the positive and negative electrodes during electrospinning is 10cm, the electrostatic voltage is 26kV, and the flow rate of the spinning solution is 0.001mL / s, Nanofibers were collected by a grounded aluminum plate to obtain a porous membrane composed of cellulose acetate nanofibers doped with 1,4-dihydroxyanthraquinone.

[0037] In step 2, the porous membrane composed of cellulose acetate nanofibers doped with 1,4-dihydroxyanthraquinone is soaked in sodium hydroxide solution for 25 hours to obtain a film similar to figure 1 Shown is a porous membrane ...

Embodiment 3

[0039] The concrete steps of preparation are:

[0040] Step 1, first cellulose acetate, 1,4-dihydroxyanthraquinone and solvent are mixed according to the ratio of 8wt% by weight: 0.1wt%: 91.9wt%; wherein, the solvent is a mixed solution of acetone and deionized water to obtain spinning solution. Then the spinning solution is placed on the electrospinning machine for 4min electrospinning, wherein the distance between the positive and negative electrodes during electrospinning is 10cm, the electrostatic voltage is 26kV, and the flow rate of the spinning solution is 0.001mL / s , the nanofibers were collected by a grounded aluminum plate, resulting in a porous membrane composed of cellulose acetate nanofibers doped with 1,4-dihydroxyanthraquinone.

[0041] In step 2, the porous membrane composed of cellulose acetate nanofibers doped with 1,4-dihydroxyanthraquinone is soaked in sodium hydroxide solution for 26 hours to obtain the following: figure 1 Shown is a porous membrane comp...

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Abstract

The invention discloses a porous membrane mixed by 1,4-dihydroxy anthraquinone and cellulose, preparation method and usage. The porous membrane is in a porous mesh type structure composed of nanofibers, and the surfaces of the nanofibers are fully distributed with micropores, the diameter of the micropores are 300-500nm, and the nanofibers are composed of cellulose with a 75-85:1 mass ratio and the 1,4-dihydroxy anthraquinone. The method is firstly mixing cellulose acetate, the 1,4-dihydroxy anthraquinone and solvent, wherein the solvent is acetone and deionized water mixed solution; obtaining spinning solution; then placing the spinning solution on an electrostatic spinning machine to perform electrostatic spinning for at least 3min to obtain porous membrane composed of cellulose acetate nanofibers mixed with the 1,4-dihydroxy anthraquinone; following by placing the porous membrane composed of the cellulose acetate nanofibers mixed with the 1,4-dihydroxy anthraquinone into sodium hydroxide solution to soak for at least 24h; and obtaining the porous membrane composed of the cellulose acetate nanofibers mixed with the 1,4-dihydroxy anthraquinone. The porous membrane can be used as fluorescent sensing materials during detections which adopt a fluorescence analytical method to perform fast detection on trace bivalent copper ion.

Description

technical field [0001] The invention relates to a porous membrane, its preparation method and application, especially a porous membrane composed of 1,4-dihydroxyanthraquinone doped cellulose, its preparation method and application. Background technique [0002] Copper is an essential element in the metabolic process of organisms, and plays an important role in the metabolism, growth and development, hematopoiesis, immunity and other processes of organisms. However, excessive copper content in the human body can cause gastrointestinal disorders and cause damage to organs such as the liver and kidneys. Therefore, the rapid detection of trace copper in drinking water, food, and the environment is particularly important. At present, people detect divalent copper ions (Cu 2+ ) methods mainly include the following: [0003] (1) Electrochemical method (A. Abbaspour, F. Norouz-Sarvestani, H. Sharghi, F. Moeini. Anal. Methods. 2010, 2, 1522.); [0004] (2) Induced coupled ion mas...

Claims

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Application Information

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IPC IPC(8): D04H1/728D04H1/425D06M11/38G01N21/64
Inventor 王美玲孟国文黄青钱益武
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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