Preparation method for copper/cuprous oxide/cyclized polyacrylonitrile visible-light-driven photocatalyst

A technology of polyacrylonitrile and cuprous oxide, which is applied in the direction of physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, chemical instruments and methods, and can solve the problems of difficult mixing, high production cost, and consumption Time and other issues, to achieve the effect of reducing photocorrosion, improving stability, and simple preparation method

Inactive Publication Date: 2015-12-09
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation method requires multiple long-time high-temperature heat treatment steps, such as the formation of a microcyclized acrylonitrile oligomer solution that needs to be stirred at 100°C to 200°C for 100h to 200h, which has high energy consumption, long time consumption, and high production cost. High, and the mixing method of the polymer solid and the copper compound solid is a mechanical mixing method such as stirring, ultrasonic and ball milling, and the mixing is not easy to be uniform

Method used

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  • Preparation method for copper/cuprous oxide/cyclized polyacrylonitrile visible-light-driven photocatalyst
  • Preparation method for copper/cuprous oxide/cyclized polyacrylonitrile visible-light-driven photocatalyst
  • Preparation method for copper/cuprous oxide/cyclized polyacrylonitrile visible-light-driven photocatalyst

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Experimental program
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Effect test

Embodiment 1

[0035] Weigh 0.20 g of polyacrylonitrile solid and dissolve it in 10.0 mL of dimethyl sulfoxide, and stir under airtight until completely dissolved. In addition, 3.36g of copper nitrate trihydrate (Cu(NO 3 ) 2 ·3H 2O) Dissolve in 20.0 mL of dimethyl sulfoxide. Mix the obtained copper nitrate solution and polyacrylonitrile solution evenly under stirring to obtain a dimethyl sulfoxide mixed solution containing both copper nitrate and polyacrylonitrile. Weigh 1.41 g of solid sodium hydroxide and dissolve it in 100 mL of distilled water to form a sodium hydroxide solution, and add the above-mentioned mixed solution of dimethyl sulfoxide to the sodium hydroxide solution dropwise under stirring for 30 minutes. After the dropwise addition, the stirring was continued for 30 minutes to obtain a nano-copper hydroxide / polyacrylonitrile suspension. Then dissolve 1.81 g of ascorbic acid in 50 mL of distilled water to obtain an ascorbic acid solution, and add dropwise to the above-menti...

Embodiment 2

[0043] Weigh 0.20 g of polyacrylonitrile solid and dissolve it in 5.0 mL of dimethyl sulfoxide, and stir until completely dissolved. Another 4.69 g of copper nitrate trihydrate was weighed and dissolved in 20.0 mL of dimethyl sulfoxide. Mix the obtained copper nitrate solution and polyacrylonitrile solution evenly under stirring to obtain a dimethyl sulfoxide mixed solution containing both copper nitrate and polyacrylonitrile. Weigh 1.80 g of solid sodium hydroxide and dissolve it in 100 mL of distilled water to form a sodium hydroxide solution, and add the above-mentioned mixed solution of dimethyl sulfoxide to the sodium hydroxide solution dropwise under stirring for 40 minutes. After the dropwise addition, the stirring was continued for 60 minutes to obtain a nano-copper hydroxide / polyacrylonitrile suspension. Then 2.00 g of ascorbic acid was dissolved in 50 mL of distilled water to obtain an ascorbic acid solution, which was added dropwise to the above-mentioned nano-copp...

Embodiment 3

[0045] Weigh 0.20 g of polyacrylonitrile solid and dissolve it in 10.0 mL of dimethyl sulfoxide, and stir under airtight until completely dissolved. Another 3.36 g of copper nitrate trihydrate was weighed and dissolved in 20.0 mL of dimethyl sulfoxide. Mix the obtained copper nitrate solution and polyacrylonitrile solution evenly under stirring to obtain a dimethyl sulfoxide mixed solution containing both copper nitrate and polyacrylonitrile. Weigh 1.41 g of solid sodium hydroxide and dissolve it in 100 mL of distilled water to form a sodium hydroxide solution, and add the above-mentioned dimethyl sulfoxide mixed solution dropwise to the sodium hydroxide solution under stirring for 60 minutes. After the dropwise addition, the stirring was continued for 60 minutes to obtain a nano-copper hydroxide / polyacrylonitrile suspension. Then dissolve 1.81 g of ascorbic acid in 50 mL of distilled water to obtain an ascorbic acid solution, and add dropwise to the above-mentioned nano-copp...

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Abstract

The invention discloses a preparation method for a copper/cuprous oxide/cyclized polyacrylonitrile visible-light-driven photocatalyst, and belongs to the technical field of environmental cleaning photocatalyst new materials. The preparation method includes the steps of firstly, preparing a nanometer copper hydroxide/photocatalyst compound by synchronously conducting solvent conversion and in-situ ion exchange reaction with photocatalyst, cupric nitrate and sodium hydroxide as raw materials; secondly, reducing copper hydroxide into cuprous oxide in situ through ascorbic acid; thirdly, conducting thermal treatment under the nitrogen atmosphere, reducing a small amount of cuprous oxide into elementary substance copper while cyclization and dehydrogenation are conducted on polyacrylonitrile to form a conjugated structure, and obtaining the copper/cuprous oxide/cyclized polyacrylonitrile visible-light-driven photocatalyst. The raw materials are wide in source, cost is low, the preparation method is simple and suitable for large-scale production, cyclized polyacrylonitrile can improve the separation efficiency of photoproduction electron holes and absorption of the visible light areas and can have a protection and optical corrosion reduction effect on copper/cuprous oxide, and the obtained catalyst is remarkable in adsorption and photocatalytic effect.

Description

technical field [0001] The invention relates to a preparation method of a copper / cuprous oxide / cyclized polyacrylonitrile visible light catalyst, belonging to the technical field of new photocatalyst materials for environmental purification. Background technique [0002] Nano-semiconductor photocatalysis technology can use light energy to catalyze chemical reactions. It has the advantages of mild reaction conditions, simple operation, and environmental friendliness. It is one of the effective ways to solve environmental pollution problems. Nano-titanium dioxide is the earliest photocatalyst. It has the advantages of low price, non-toxicity and good stability and has been widely studied. However, titanium dioxide has a large band gap and can only absorb ultraviolet light for catalytic reactions. The utilization rate of sunlight is low. . Therefore, the development of high-efficiency photocatalysts with a wide response range to visible light has always been a research hotspot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/28
Inventor 罗青枝张韶蕾王德松殷蓉李雪艳安静
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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