Preparation method of nano zinc oxide/cyclized polyacrylonitrile composite micro-sphere material with zinc oxide nano particles uniformly distributed in polymer

A zinc oxide nano and nano zinc oxide technology, applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, chemical/physical processes, etc. The chain rigidity is large, and the number of lamellae is difficult to control effectively, so as to achieve the effect of excellent visible light catalytic activity, simple preparation method and improved absorption.

Inactive Publication Date: 2015-11-18
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

However, in the above-mentioned carbon materials, the molecules of footballene (C60) are spherical, graphene and carbon nitride are lamellar structures, and the molecular chains are relatively rigid. When compounding with zinc oxide particles, it is difficult to completely and tightly wrap the zinc oxide particles. Moreover, it is difficult to effectively control the number of layers of graphene and carbon nitride in a liquid medium, which makes it difficult to control the thickness and distribution of graphene or carbon nitride on the surface of zinc oxide.
The disadvantage of polyaniline is that it is insoluble in water and general solvents, and its molecular weight and compound uniformity are difficult to control, so it is not suitable for mass production.
In addition, when using pre-prepared zinc oxide particles for surface compounding, even ultrasonic dispersion is difficult to completely solve the problem of agglomeration of zinc oxide nanoparticles caused by high surface energy, which will inevitably affect the uniform distribution of zinc oxide in the compound properties, thereby affecting the photocatalytic performance of the composite

Method used

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  • Preparation method of nano zinc oxide/cyclized polyacrylonitrile composite micro-sphere material with zinc oxide nano particles uniformly distributed in polymer
  • Preparation method of nano zinc oxide/cyclized polyacrylonitrile composite micro-sphere material with zinc oxide nano particles uniformly distributed in polymer
  • Preparation method of nano zinc oxide/cyclized polyacrylonitrile composite micro-sphere material with zinc oxide nano particles uniformly distributed in polymer

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Effect test

Embodiment 1

[0030] Weigh 1.00 g of polyacrylonitrile solid and dissolve it completely in dimethyl sulfoxide to make 50 mL of polyacrylonitrile dimethyl sulfoxide solution, and take another 2.00 g of zinc nitrate hexahydrate solid and dissolve it in 5.0 mL of dimethyl sulfoxide Then, 27.0 mL of the polyacrylonitrile dimethyl sulfoxide solution was pipetted and mixed with the zinc nitrate dimethyl sulfoxide solution to obtain a mixed solution of zinc nitrate and polyacrylonitrile dimethyl sulfoxide. Then dilute 2.20 g of an ammonia solution with an ammonia concentration of 25% in 320 mL of distilled water to prepare a dilute ammonia solution with a mass concentration of 0.17%. Then, under rapid stirring conditions, the mixed solution of zinc nitrate and polyacrylonitrile in dimethyl sulfoxide was slowly added dropwise to the dilute ammonia solution for 30 minutes, and the stirring was continued for 30 minutes after the addition was completed, and then left to stand After 12 hours, the produ...

Embodiment 2

[0034] Weigh 1.00g of polyacrylonitrile solid and dissolve it in 50mL dimethyl sulfoxide solvent, take another 2.00g of zinc nitrate hexahydrate solid and dissolve it in 5.0mL dimethyl sulfoxide solvent, then pipette polyacrylonitrile dimethyl sulfoxide 9.0 mL of the sulfone solution was airtightly mixed with the above zinc nitrate dimethyl sulfoxide solution to obtain a mixed solution of zinc nitrate and polyacrylonitrile dimethyl sulfoxide. Then dilute 2.20 g of an ammonia solution with an ammonia concentration of 25% in 140 mL of distilled water to prepare a dilute ammonia solution with a mass concentration of 0.39%. Then slowly add the mixed solution of zinc nitrate and polyacrylonitrile dimethyl sulfoxide into the dilute ammonia solution under the condition of rapid stirring, the dropping time is 20min, and continue to stir for 30min after the dropping to make it fully react After standing still for 12 hours, the product was filtered, washed three times with water, and dr...

Embodiment 3

[0036] Weigh 1.00 g of polyacrylonitrile solid and dissolve it completely in dimethyl sulfoxide to make 50 mL of polyacrylonitrile dimethyl sulfoxide solution, and take another 2.00 g of zinc nitrate hexahydrate solid and dissolve it in 5.0 mL of dimethyl sulfoxide Then, 27.0 mL of the polyacrylonitrile dimethyl sulfoxide solution was pipetted and mixed with the zinc nitrate dimethyl sulfoxide solution to obtain a mixed solution of zinc nitrate and polyacrylonitrile dimethyl sulfoxide. Then dilute 2.20 g of an ammonia solution with an ammonia concentration of 25% in 320 mL of distilled water to prepare a dilute ammonia solution with a mass concentration of 0.17%. Then, under the condition of rapid stirring, the mixed solution of zinc nitrate and polyacrylonitrile in dimethyl sulfoxide was slowly added dropwise to the dilute ammonia solution for 25 minutes, and the stirring was continued for 30 minutes after the addition was completed, and then left to stand After 10 hours, the...

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Abstract

The invention discloses a preparation method of a nano zinc oxide / cyclized polyacrylonitrile composite micro-sphere material with zinc oxide nano particles uniformly distributed in a polymer and belongs to the technical field of a novel material of an environment purification photocatalyst. The preparation method comprises the following steps: firstly, dissolving polyacrylonitrile and zinc nitrate solids into a dimethyl sulfoxide solvent; slowly dripping a mixed solution into a diluted ammonia water solution; condensing polyacrylonitrile into micro-spheres in water and enabling zinc nitrate and hydroxyl ions to react to generate zinc hydroxide in situ to obtain composite micro-spheres with zinc hydroxide nano particles uniformly distributed in polyacrylonitrile; and then separating, washing, drying and baking under inert gas to obtain the nano zinc oxide / cyclized polyacrylonitrile composite micro-sphere material. The preparation method has the advantages that the preparation method is simple, complicated equipment is not needed, used polyacrylonitrile has a cheap price and is easy to obtain and the zinc oxide nano particles are uniformly distributed in the cyclized polyacrylonitrile composite micro-spheres; and the prepared composite micro-sphere material has excellent visible-light catalytic activity.

Description

technical field [0001] The invention specifically relates to a preparation method of a nano-zinc oxide / cyclized polyacrylonitrile composite microsphere material in which zinc oxide nanoparticles are uniformly distributed in a polymer, and belongs to the technical field of new photocatalyst materials for environmental purification. Background technique [0002] Photocatalytic technology based on nano-semiconductor materials is recognized as a green technology with the most development potential and application prospect to eliminate environmental pollutants and solve energy crisis. Among many semiconductor photocatalytic materials, nano-zinc oxide has attracted much attention due to its strong oxidation ability of photogenerated holes, high catalytic activity, good chemical stability, low cost, non-toxicity, and wide range of sources. However, zinc oxide is a wide-bandgap semiconductor, which can only be excited by ultraviolet light to produce photocatalysis, and its photogene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/26B01J35/08
Inventor 罗青枝杨晓莲王德松李雪艳殷蓉安静
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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