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Cellulose acetate/ titanium dioxide composite nanofiber adsorption film and preparation method thereof

A composite nanofiber and cellulose acetate technology, which is applied in chemical instruments and methods, adsorption water/sewage treatment, and other chemical processes, can solve problems such as inability to be directly applied and low mechanical strength, and achieve high heavy metal ion adsorption capacity and The effect of adsorption rate and simple process

Inactive Publication Date: 2014-07-02
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cellulose acetate nanofibers prepared by electrospinning have low mechanical strength and cannot be directly applied.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] 1) Titanium dioxide solution preparation: Add 0.01g of titanium dioxide nanoparticles to 1L of ethanol / water solution with a mass of 1:1 to prepare a 0.01g / L solution, heat the solution to boiling state and reflux for 60min, filter and use Wash with deionized water until neutral, vacuum dry at 60°C for 24 hours, take a certain amount of dried titanium dioxide nanoparticles and disperse them in deionized water, and ultrasonically disperse to prepare a titanium dioxide solution with a concentration of 5g / L;

[0012] 2) Preparation of cellulose acetate solution: Dissolve cellulose acetate with a molecular weight of 100,000 in acetone at room temperature to prepare a solution with a volume mass fraction (g / L) of 15%, and magnetically stir for 6 hours to obtain a transparent solution;

[0013] 3) Preparation of composite solution: mix the titanium dioxide solution obtained in step 1) with the cellulose acetate solution obtained in step 2) according to the solute mass ratio of...

Embodiment 2

[0016] 1) Preparation of titanium dioxide solution: Add 0.04g of titanium dioxide nanoparticles to 1L of ethanol / water solution with a mass of 1:1 to prepare a 0.04g / L solution, heat the solution to boiling state and reflux for 70min, filter and use Wash with deionized water until neutral, vacuum dry at 60°C for 24 hours, take a certain amount of dried titanium dioxide nanoparticles and disperse them in deionized water, and ultrasonically disperse to prepare a titanium dioxide solution with a concentration of 8g / L;

[0017] 2) Preparation of cellulose acetate solution: Dissolve cellulose acetate with a molecular weight of 200,000 in chloroform at room temperature, prepare a solution with a volume mass fraction (g / L) of 10%, stir magnetically for 6 hours, and obtain a transparent solution;

[0018] 3) Preparation of composite solution: mix the titanium dioxide solution obtained in step 1) with the cellulose acetate solution obtained in step 2) according to the solute mass ratio...

Embodiment 3

[0021] 1) Preparation of titanium dioxide solution: Add 0.08g of titanium dioxide nanoparticles to 1L of ethanol / water solution with a mass of 1:1 to prepare a 0.08g / L solution, heat the solution to boiling state and reflux for 80min, filter and use Wash with deionized water until neutral, vacuum dry at 60°C for 24 hours, take a certain amount of dried titanium dioxide nanoparticles and disperse them in deionized water, and ultrasonically disperse to prepare a titanium dioxide solution with a concentration of 10g / L;

[0022] 2) Preparation of cellulose acetate solution: Dissolve cellulose acetate with a molecular weight of 300,000 in dimethylacetamide at room temperature, prepare a solution with a volume mass fraction (g / L) of 8%, stir magnetically for 6 hours, and obtain transparent solution;

[0023] 3) Preparation of composite solution: mix the titanium dioxide solution obtained in step 1) with the cellulose acetate solution obtained in step 2) according to the solute mass ...

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Abstract

The invention discloses a cellulose acetate / titanium dioxide composite nanofiber adsorption film and a preparation method of the cellulose acetate / titanium dioxide composite nanofiber adsorption film, and belongs to a preparation technology of nanometer materials. The method includes the following processes that firstly, alcoholization processing is conducted on titanium dioxide, the surface of titanium dioxide is made to be provided with hydroxyl (TiO2-OH), and a titanium dioxide solution is prepared by dispersing titanium dioxide in deionized water; cellulose acetate is dissolved into a solvent, and a transparent cellulose acetate solution is obtained; the titanium dioxide solution and the cellulose acetate solution are mixed, and electrostatic spinning is conducted, wherein the high-voltage static adjusting range is from 16 kV to 30 kV, the flow speed of an injection pump ranges from 0.05 mL / h to 0.3 mL / h, and the receiving distance ranges from 10 cm to 20 cm. The preparation method is simple in process, and the prepared cellulose acetate / titanium dioxide composite nanofiber adsorption film has the advantage of being high in heavy metal ion adsorption capacity and adsorption rate.

Description

technical field [0001] The invention relates to a method for preparing cellulose acetate / titanium dioxide through high-voltage electrostatic spinning to form a nanofiber film, which belongs to the preparation technology of nanometer materials. Background technique [0002] With the development of the economy, the discharge of a large amount of heavy metal wastewater has more and more serious impacts on the environment and human health, and heavy metals cannot be naturally degraded in the environment and will gradually accumulate. Therefore, research and development of safe, efficient, and pollution-free heavy metal adsorbents becomes particularly important. Due to the small particle size, large specific surface area, and the presence of a large number of hydroxyl groups on the surface that can bond with cations, nanomaterials have a strong adsorption capacity for metal ions, and are a kind of adsorption materials with great application prospects. Cellulose acetate (CA) is a...

Claims

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Application Information

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IPC IPC(8): D04H1/4382D04H1/728B01J20/24B01J20/30C02F1/28C02F1/62
Inventor 蔡志江高阳胡锐佘卫军史杏娟
Owner TIANJIN POLYTECHNIC UNIV
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