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Color developing fiber, preparation method thereof and Cu (II) detection application of color developing fiber

A color-developing fiber and color-developing agent technology, which is applied in the direction of fiber type, fiber treatment, and analysis by making materials undergo chemical reactions, can solve problems such as large errors, insufficient detection values, and easy to be affected by environmental parameters, etc., to achieve Rapid detection, good effect, and shortened reaction time

Pending Publication Date: 2021-10-01
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Summarizing some new rapid detection methods that have emerged in recent years, it can be known that the test paper method mainly relies on the obvious color reaction between the chromogenic agent grafted on the test paper and the heavy metal ions to quickly detect the target heavy metal ions; Large and easily affected by environmental parameters

Method used

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  • Color developing fiber, preparation method thereof and Cu (II) detection application of color developing fiber
  • Color developing fiber, preparation method thereof and Cu (II) detection application of color developing fiber
  • Color developing fiber, preparation method thereof and Cu (II) detection application of color developing fiber

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Experimental program
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Effect test

Embodiment 1

[0037] Heavy metals generally refer to density greater than 4.5g / cm 3 There are 45 kinds of metals, such as copper, nickel, cadmium, etc., among which mercury, cadmium, lead, etc. have significant biological toxicity, and copper, zinc, nickel, etc. are toxic. Pollution is mainly due to its refractory and high solubility characteristics. After the completion of industrialization in various countries, heavy metal pollution has gradually become a very serious environmental problem. Whether in the atmosphere, soil, or water bodies, heavy metal pollution can be said to be everywhere. According to relevant statistics, many cities in my country are severely polluted by heavy metals in the air. Among them, Guangzhou and Nanjing have high concentrations of As, Cr, and Cd pollutants in air PM2.5 to varying degrees. Pollutants in the atmosphere will return to the ground in the form of ice, rain, and snow, causing pollution to soil and water. Part of the farmland has also been investig...

Embodiment 2

[0052] In order to explore the optimal synthesis conditions of chromogenic fibers, using DesignExpert software, the molar ratio of polyacrylonitrile fibers to ligands is 1:1 to 1:4, and the mass ratio of polyacrylonitrile fibers to catalysts is 100:1 to 10. : 1; the molar ratio of polyacrylonitrile fiber to developer is 3:1~1:2; the microwave reaction condition is the reaction time 0.5h~2h; the single factor experiment of the reaction temperature is 90℃~120℃ and other conditions. The results show that the order of the influencing factors from primary to secondary is: reaction temperature, reaction time, molar ratio of PAN to ligand, mass ratio of PAN to catalyst, molar ratio of PAN to PAR.

[0053] Therefore, continue to select the first three influencing factors: reaction temperature, reaction time, molar ratio of PAN and ligand, and carry out orthogonal experiment and response surface analysis.

[0054] Among them, the reaction temperature is 90°C, 105°C, and 120°C as a grad...

Embodiment 3

[0066] Experiment 1 Effect of pH on the Adsorption Amount of Cu(Ⅱ) Adsorbed by Chromogenic Fiber

[0067] Take the prepared dry and clean test tube, add 20ml of HAc-NaAc buffer solution with different pH and 5ml of copper ion solution with a concentration of 2000ppm respectively. The pH range of the selected HAc-NaAc buffer solution is 4-6.5. Each weighed 50 mg of chromogenic fiber was placed in a test tube, and was shaken and adsorbed in a constant temperature shaker at 25°C for 30 minutes. After the adsorption is completed, the fiber is separated from the solution by filtration, and the ion concentration of the obtained solution is detected by ICP-AES, and the adsorption amount of copper ions by the chromogenic fiber is calculated according to the following formula.

[0068]

[0069] C in formula (1) 0 and C e are the initial concentration (mg / mL) and adsorption equilibrium concentration (mg / L) of copper ions, respectively. V is the added amount (L) of the heavy metal...

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Abstract

The invention provides a color developing fiber as well as a preparation method and application thereof. Polyacrylonitrile is used as a parent, sulfamic acid is used as a ligand, aluminum chloride is used as a catalyst, N, N-dimethylformamide is used as a solvent, heating is performed by a microwave method, and the color developing fiber is prepared by a one-pot method. The method has the beneficial effects that 1, the synthetic route is simple, compared with the traditional hydrothermal method, the microwave-assisted heating of the one-pot method greatly shortens the reaction time, the reaction system is more uniform and stable, and the reaction efficiency is high; 2, the preparation process is green and safe, toxic materials are not introduced, toxic substances are not generated, the cost is low, and the material source is wide; and 3, the prepared color developing fiber has a good copper ion selective detection effect, and is lower in consumption, more convenient and more efficient than the existing rapid detection technology; and 4, the color developing fiber prepared by the method can realize rapid detection of copper ions in electronic material rinsing wastewater and dye wastewater.

Description

technical field [0001] The invention relates to the technical field of color-developing fibers, in particular to a color-developing fiber, its preparation method and its Cu(II) detection application. Background technique [0002] Electronic materials refer to materials used in electronic technology and microelectronic technology, including dielectric materials, semiconductor materials, piezoelectric and ferroelectric materials, conductive metals and their alloy materials, magnetic materials, optoelectronic materials, electromagnetic wave shielding materials and other related materials. Material. Electronic materials are the material basis for the development of modern electronics industry and science and technology. The production process of electronic materials is accompanied by a large amount of electroplating rinsing wastewater, which has complex components and contains a large amount of copper ions, which is harmful to the environment and human health. [0003] In addi...

Claims

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Application Information

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IPC IPC(8): D06M10/06D06M10/08C08F8/34C08F8/30C08F120/44G01N21/78D06M101/28
CPCD06M10/06D06M10/08C08F8/34C08F8/30G01N21/78D06M2101/28C08F120/44
Inventor 王小青任瑜杰赵斌贺陆洪婧金诗瑶汪诗敏马江涛陈龙
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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