Porous membrane composed of cellulose doped with 1,4-dihydroxy anthraquinone and bivalent copper ion and preparation method and application thereof

A technology of dihydroxyanthraquinone and divalent copper ions, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., to achieve good selectivity

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

AI Technical Summary

Problems solved by technology

[0008] Compared with the above existing analysis 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 realize the rapid detection of low-concentration trivalent chromium ions

Method used

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  • Porous membrane composed of cellulose doped with 1,4-dihydroxy anthraquinone and bivalent copper ion and preparation method and application thereof
  • Porous membrane composed of cellulose doped with 1,4-dihydroxy anthraquinone and bivalent copper ion and preparation method and application thereof
  • Porous membrane composed of cellulose doped with 1,4-dihydroxy anthraquinone and bivalent copper ion and preparation method and application thereof

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Embodiment 1

[0033] The concrete steps of preparation are:

[0034] Step 1, first cellulose acetate, 1,4-dihydroxyanthraquinone, copper nitrate trihydrate and solvent are mixed according to the ratio of 7.5wt%: 0.1wt%: 0.22wt%: 92.18wt%; wherein, The solvent is a mixed solution of acetone and deionized water to obtain a spinning solution. Then the spinning solution was placed on the electrospinning machine for 3 minutes of electrospinning; wherein, the distance between the positive and negative electrodes during electrospinning was 10cm, the electrostatic voltage was 26kV, and the flow rate of the spinning solution was 0.001mL / s , the nanofibers were collected by a grounded aluminum plate to obtain a porous membrane composed of cellulose acetate nanofibers doped with 1,4-dihydroxyanthraquinone and divalent copper ions.

[0035] In step 2, the porous membrane composed of cellulose acetate nanofibers doped with 1,4-dihydroxyanthraquinone and divalent copper ions is soaked in sodium hydroxid...

Embodiment 2

[0037] The concrete steps of preparation are:

[0038] Step 1, first cellulose acetate, 1,4-dihydroxyanthraquinone, copper nitrate trihydrate and solvent are mixed according to the ratio of 7.8wt%: 0.1wt%: 0.21wt%: 91.89wt%; wherein, The solvent is a mixed solution of acetone and deionized water to obtain a spinning solution. Then the spinning solution is placed on the electrospinning machine for 3.5min 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 to obtain a porous membrane composed of cellulose acetate nanofibers doped with 1,4-dihydroxyanthraquinone and divalent copper ions.

[0039] In step 2, the porous membrane composed of cellulose acetate nanofibers doped with 1,4-dihydroxyanthraquinone and divalent copper ions is soaked in sodium hydroxide solution...

Embodiment 3

[0041] The concrete steps of preparation are:

[0042] Step 1, first cellulose acetate, 1,4-dihydroxyanthraquinone, copper nitrate trihydrate and solvent are mixed according to the ratio of 8wt% by weight: 0.1wt%: 0.2wt%: 91.7wt%; wherein, the solvent A solution mixed with acetone and deionized water to obtain a 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 to obtain a porous membrane composed of cellulose acetate nanofibers doped with 1,4-dihydroxyanthraquinone and divalent copper ions.

[0043] In step 2, the porous membrane composed of cellulose acetate nanofibers doped with 1,4-dihydroxyanthraquinone and divalent copper ions is soaked in sodium hydroxide solut...

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Abstract

The present invention discloses porous membrane composed of cellulose doped with 1,4-dihydroxy anthraquinone and bivalent copper ions and a preparation method and application thereof. The porous membrane has a porous net structure composed of nano-fibers with a diameter of 300-500 nm and with surface covered with micropores. The nanofiber is composed of cellulose, 1,4-dihydroxy anthraquinone and divalent copper ions with a mass ratio of 75-85:1:1.8-2.2. The preparation method includes: mixing cellulose acetate, 1,4-dihydroxy anthraquinone, copper nitrate hydrate, and a solvent to obtain a spinning solution, placing the spinning solution on an electrostatic spinning machine for electrostatic spinning to obtain the porous membrane composed of cellulose doped with 1,4-dihydroxy anthraquinone and bivalent copper ions, soaking the porous membrane composed of cellulose doped with 1,4-dihydroxy anthraquinone and bivalent copper ions in a sodium hydroxide solution to get the target product. The porous membrane is used as a fluorescence sensing material for trace rapid detection of trivalent chromium ions, when the fluorescence analysis method is used for detection.

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 and divalent copper ion-doped cellulose, its preparation method and application. Background technique [0002] Chromium is one of the trace elements necessary for human nutrition, and plays an important role in the metabolism of carbohydrates, fats, proteins, and nucleic acids in the human body. However, chromium is a carcinogen and can induce mutations in organisms. Excess chromium is capable of binding to DNA, disrupting the structure of cells and damaging their components. Therefore, the rapid detection of trace chromium in drinking water, food, and the environment is particularly important. At present, people detect trivalent chromium ion (Cr 3+ ) methods mainly include the following: [0003] (1) Mass spectrometry (C. Danielle, S. Peter, H. Xiandeng, Appl. Spectrosc. 2005, 59, 1427); [0004] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/10B01D71/16B01D67/00G01N21/64
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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