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Preparation method of copper benzoate hydroxide-SiO2 composite material with photocatalysis

A technology of copper hydroxide benzoate and composite materials, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, special compound water treatment, etc., can solve the problem of low energy utilization rate of photocatalytic materials, dyes Due to the poor photocatalytic degradation effect of wastewater, the overall morphology is complete, the preparation method is simple and effective, and the degradation efficiency is improved.

Inactive Publication Date: 2017-02-15
BAOJI UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the invention is to provide a kind of copper hydroxide benzoate-SiO with photocatalysis 2 The preparation method of composite materials solves the problems of low energy utilization rate of existing photocatalytic materials and poor photocatalytic degradation effect on dye wastewater

Method used

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  • Preparation method of copper benzoate hydroxide-SiO2 composite material with photocatalysis
  • Preparation method of copper benzoate hydroxide-SiO2 composite material with photocatalysis
  • Preparation method of copper benzoate hydroxide-SiO2 composite material with photocatalysis

Examples

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Effect test

Embodiment 1

[0035] Step 1, weigh 3.0g of copper nitrate and dissolve it in 50mL of water to obtain a copper nitrate solution, add 2.5mL of concentrated ammonia water dropwise to the copper nitrate solution, and keep stirring until a light blue precipitate is formed, then continue stirring at room temperature for 0.5h , after the solution was completely precipitated, aged for 6 hours, suction filtered, and the precipitate was washed several times with deionized water, and then dried at room temperature for 24 hours to obtain copper hydroxide;

[0036] Step 2: Put 0.7140g of copper hydroxide and 0.7170g of benzoic acid in 20mL of deionized water, and carry out a reflux reaction at 95°C for 24 hours under full stirring. After the reaction is completed, the product is suction filtered, washed, and dried at room temperature for 24 hours. That is, layered copper hydroxide benzoate (LDH-Cu).

[0037] Step 3, at room temperature, mix 31.5mL deionized water, 30mL ammonia water and 20mL absolute et...

Embodiment 2

[0040]Step 1, weigh 3.0 g of copper nitrate and dissolve it in 50 mL of water to obtain a copper nitrate solution, add 3 mL of concentrated ammonia water dropwise to the copper nitrate solution, and keep stirring until a light blue precipitate is formed, continue stirring for 1 h at room temperature, and wait for After the solution was completely precipitated, aged for 8 hours, suction filtered, and the precipitate was washed several times with deionized water, and then dried at room temperature for 32 hours to obtain copper hydroxide;

[0041] Step 2, put 1.5g of copper hydroxide and 1g of benzoic acid in 45mL of deionized water, and carry out a reflux reaction at 90°C for 18h under sufficient stirring. After the reaction is completed, the product is suction filtered, washed, and dried at room temperature for 32h, namely Layered copper hydroxide benzoate (LDH-Cu) was obtained.

[0042] Step 3, at room temperature, mix 30mL deionized water, 30mL ammonia water and 20mL absolute...

Embodiment 3

[0045] Step 1, weigh 3.0 g of copper nitrate and dissolve it in 50 mL of water to obtain a copper nitrate solution, add 2 mL of concentrated ammonia water dropwise to the copper nitrate solution, and keep stirring until a light blue precipitate is formed, continue stirring for 45 minutes at room temperature, and wait for After the solution was completely precipitated, aged for 7 hours, suction filtered, and the precipitate was washed several times with deionized water, and then dried at room temperature for 28 hours to obtain copper hydroxide;

[0046] Step 2, put 1.2g of copper hydroxide and 1g of benzoic acid in 36mL of deionized water, and carry out a reflux reaction at 100°C for 20h under sufficient stirring. After the reaction is completed, the product is suction filtered, washed, and dried at room temperature for 28h, namely Layered copper hydroxide benzoate (LDH-Cu) was obtained.

[0047] Step 3, at room temperature, mix 36mL deionized water, 30mL ammonia water and 24mL...

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Abstract

The invention discloses a preparation method of a copper benzoate hydroxide-SiO2 composite material with photocatalysis. The preparation method comprises preparing copper hydroxide by a precipitation method, preparing laminated copper benzoate hydroxide from the copper hydroxide and benzoic acid as main raw materials, and carrying out a hydro-thermal synthesis reaction process on the laminated copper benzoate hydroxide and SiO2 microspheres to obtain a copper benzoate hydroxide-SiO2 compound. Through a self-assembly method, an LDH-Cu@SiO2 composite material with a core-shell structure is obtained and LDH-Cu fibers uniformly coat the silicon dioxide microspheres so that the whole morphology is complete. Compared with the conventional layered nano-compounds, the copper benzoate hydroxide-SiO2 composite material has better dispersibility and better photocatalytic activity in the reaction system. LDH-Cu in the LDH-Cu@SiO2 composite material can synergistically degrade organic matters in dye waste water through ion exchange and electrostatic interaction and improve the degradation efficiency of dye wastewater. The preparation method is simple and effective, does not need special equipment, and provides a simple and feasible method for compounding different functional materials.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic material preparation, in particular to a photocatalytic copper hydroxide benzoate-SiO 2 Methods of preparation of composite materials. Background technique [0002] In recent years, my country's economy has developed rapidly, and industries such as industry, construction, and textiles have developed rapidly. The discharge of a large amount of industrial waste has caused environmental pollution to become more and more serious. Therefore, the effective treatment of various environmental pollutants has become an urgent task. Among them, a large amount of colored wastewater discharged from papermaking, printing and dyeing industries has the characteristics of high toxicity, complex components, and difficult biodegradation. The treatment of this type of wastewater has been widely concerned by researchers. At present, the traditional treatment processes mainly include activated carbon adsorptio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/02C02F1/30C02F101/30
CPCC02F1/30B01J31/0201C02F2101/308C02F2305/10B01J35/39Y02W10/37
Inventor 张锋王辉赵立芳同晓娟赵莉
Owner BAOJI UNIV OF ARTS & SCI
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