Preparation method of Cu2O-CuO/bentonite photocatalytic composite material

A technology of composite materials and bentonite, which is applied in the field of preparation of Cu2O-CuO/bentonite photocatalytic composite materials, can solve the problems of easy agglomeration and difficult recycling, and achieve the effects of low cost, good photocatalytic activity, and simple and easy-to-operate preparation method

Inactive Publication Date: 2021-07-16
XINXIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when using CuO and Cu 2 O In the process of photocatalytic oxidation treatment of organic dye wastewater, there are also problems such as easy agglomeration and difficult recycling.

Method used

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  • Preparation method of Cu2O-CuO/bentonite photocatalytic composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Step S1: Put bentonite in deionized water, then add Na 2 CO 3 Make 12wt% bentonite slurry with bentonite at a mass ratio of 3%, stir at 60°C for 2 hours and let it stand overnight, then dilute the bentonite slurry to 20wt%, centrifuge and dry at 100°C, grind, and sieve to obtain Sodium bentonite;

[0017] Step S2: Dissolve copper nitrate in deionized water to prepare a 0.2 mol / L copper nitrate solution, then add 8 g of the sodium bentonite obtained in step S1 to 100 mL of copper nitrate solution, stir at room temperature for 2 hours, and then dissolve the reacted The sample was dried in a drying oven at 60°C, and then the dried sample was calcined in a muffle furnace at 300°C for 3 hours to obtain Cu 2 O-CuO / bentonite photocatalytic composites.

Embodiment 2

[0019] Step S1: Put bentonite in deionized water, then add Na 2 CO 3 Make 13wt% bentonite slurry with bentonite at a mass ratio of 4%, stir at 65°C for 3 hours and let it stand overnight, then dilute the bentonite slurry to 25wt%, centrifuge and dry at 105°C, grind, and sieve to obtain Sodium bentonite;

[0020] Step S2: Dissolve copper nitrate in deionized water to prepare a 0.3 mol / L copper nitrate solution, then add 9 g of the sodium bentonite obtained in step S1 to 100 mL of copper nitrate solution, stir at room temperature for 3 hours, and then dissolve the reacted The sample was dried in a drying oven at 70°C, and then the dried sample was calcined in a muffle furnace at 400°C for 4 hours to obtain Cu 2 O-CuO / bentonite photocatalytic composites.

Embodiment 3

[0022] Step S1: Put bentonite in deionized water, then add Na 2 CO 3 Make 15wt% bentonite slurry with bentonite at a mass ratio of 5%, stir at 70°C for 4 hours and let it stand overnight, then dilute the bentonite slurry to 30wt%, centrifuge and dry at 110°C, grind, and sieve to obtain Sodium bentonite;

[0023] Step S2: Dissolve copper nitrate in deionized water to prepare a 0.5 mol / L copper nitrate solution, then add 10 g of the sodium bentonite obtained in step S1 to 100 mL of copper nitrate solution, stir at room temperature for 4 hours, and then dissolve the reacted The sample was dried in a drying oven at 80°C, and then the dried sample was calcined in a muffle furnace at 600°C for 6 hours to obtain Cu 2 O-CuO / bentonite photocatalytic composites.

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Abstract

The invention discloses a Cu2O-CuO / bentonite photocatalytic composite material, which is prepared by the following specific steps of: putting bentonite into deionized water, and then dissolving Na2CO3 into bentonite slurry while stirring to prepare sodium bentonite; and dissolving copper nitrate in deionized water to obtain a copper nitrate solution, adding the sodium bentonite, stirring at room temperature for 2-4 hours, putting a dried sample into a muffle furnace, and calcining at 300-600 DEG C for 3-6 hours to obtain the Cu2O-CuO / bentonite photocatalytic composite material. The preparation method provided by the invention is simple and easy to operate and has practical feasibility, and the prepared Cu2O-CuO / bentonite photocatalytic composite material is low in cost and free of pollution.

Description

technical field [0001] The invention belongs to the technical field of preparation of photocatalytic materials, in particular to a Cu 2 Preparation method of O-CuO / bentonite photocatalytic composite. Background technique [0002] With the rise of printing and dyeing and textile industries, the environmental problems caused by organic dye wastewater have become increasingly serious, and the treatment of organic dye wastewater has become the top priority of sewage treatment. Organic dye wastewater is highly chromatic, toxic, and difficult to biodegrade. At present, the commonly used methods for treating sewage include adsorption, chemical oxidation, and biological methods, but these methods cannot efficiently remove organic pollutants in dye wastewater. Therefore, it is of great theoretical and practical significance to develop efficient treatment technologies and methods for organic dye wastewater. [0003] Faced with these problems, many scientists thought of using photoca...

Claims

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Application Information

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IPC IPC(8): B01J23/72B01J35/00B01J37/02C02F1/30C02F101/30
CPCB01J23/72B01J37/0207C02F1/30C02F2305/10C02F2101/308B01J35/39
Inventor 杨萃娜史纪村韩洪兴赵磊陈凡刘志锋马芸
Owner XINXIANG UNIV
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