Preparation method of two-dimensional porous Co3O4-ZnO composite nanosheet

A technology of co3o4-zno and nanosheets, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., to achieve easy removal, unique two-dimensional porous structure, high catalytic The effect of activity and stability

Inactive Publication Date: 2019-01-04
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is difficult to precisely control the synthesis of two-dimensional nano-thin layer materials in two-dimensional space using the traditional method using surfactant as the medium.

Method used

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  • Preparation method of two-dimensional porous Co3O4-ZnO composite nanosheet
  • Preparation method of two-dimensional porous Co3O4-ZnO composite nanosheet
  • Preparation method of two-dimensional porous Co3O4-ZnO composite nanosheet

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Effect test

Embodiment 1

[0028] (1) Prepare the template.

[0029] Collect rose petals, wash away the visible stains on the surface of the plant petals, soak them in a mixed solution of ethanol-water, adjust the pH to 3 with hydrochloric acid with a mass fraction of 5%, soak for 4 hours, take them out and wash them with deionized water until Neutral, then place it on a clean bench to dry naturally to form a petal template.

[0030] (2) Dip template.

[0031] Disperse 4 g of the petal template in 400 mL of n-heptane to form a mixed solution of A. Dissolve cobalt nitrate and zinc nitrate in water to form an aqueous solution with a molar ratio of 1:1, referred to as solution B; and the total concentration of the metal salt solution in the aqueous solution is 0.5 mol / L. Take 14mL of solution B, add it dropwise into the mixed solution of A under magnetic stirring, and keep stirring and impregnating for 12h.

[0032] (3) Preparation of a two-dimensional porous Co 3 o 4 -ZnO composite nanosheets.

[00...

Embodiment 2

[0037] (1) Prepare the template.

[0038] Collect rose petals, wash away the visible stains on the surface of the plant petals, soak them in a mixed solution of ethanol-water, adjust the pH to 3 with hydrochloric acid with a mass fraction of 5%, soak for 4 hours, take them out and wash them with deionized water until Neutral, then place it on a clean bench to dry naturally to form a petal template.

[0039] (2) Dip template.

[0040] Disperse 3 g of the petal template in 400 mL of cyclohexane to form a mixed solution. Dissolve cobalt chloride and zinc chloride in water to form an aqueous solution with a molar ratio of 1:1, referred to as solution B; and the total concentration of the metal salt solution in the aqueous solution is 0.4mol / L. Take 7mL of solution B, add it dropwise to the mixed solution of A under magnetic stirring, and keep stirring and impregnating for 24h.

[0041] (3) Preparation of a two-dimensional porous Co 3 o 4 -ZnO composite nanosheets.

[0042] T...

Embodiment 3

[0045] (1) Prepare the template.

[0046] Collect rose petals, wash away the visible stains on the surface of the plant petals, soak them in a mixed solution of ethanol-water, adjust the pH to 3 with hydrochloric acid with a mass fraction of 5%, soak for 4 hours, take them out and wash them with deionized water until Neutral, then place it on a clean bench to dry naturally to form a petal template.

[0047] (2) Dip template.

[0048] Disperse 2 g of the petal template in 200 mL of n-heptane to form a mixed solution. Dissolve cobalt sulfate and zinc sulfate in water to form an aqueous solution with a molar ratio of 1:1, referred to as solution B; and the total concentration of the metal salt solution in the aqueous solution is 0.2 mol / L. Take 10mL of solution B, add it dropwise into the mixed solution of A under magnetic stirring, and keep stirring and impregnating for 6-48h.

[0049] (3) Preparation of a two-dimensional porous Co 3 o 4 -ZnO composite nanosheets.

[0050]...

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Abstract

The invention discloses a preparation method of a two-dimensional porous Co3O4-ZnO composite nanosheet. The method comprises the following steps: (1) collecting plant petals and pretreating the petalsto obtain a petal template; (2) dipping the template; and (3) taking out the dipped template, cleaning, soaking and drying the template, calcining the template by a muffle furnace and then naturallycooling the template to obtain the two-dimensional porous Co3O4-ZnO composite nanosheet. The preparation method of the two-dimensional porous Co3O4-ZnO composite nanosheet is simple, sources of raw materials are wide, the cost is low, the method is green and pollution-free, the prepared material has a unique two-dimensional porous structure, high catalytic activity and heat stability, and when thematerials is used for purifying organic dyestuff wastewater, the organic dyestuff wastewater can be decomposed catalytically.

Description

technical field [0001] The invention relates to a preparation method of a two-dimensional porous composite nanosheet, in particular to a two-dimensional porous Co 3 o 4 The invention discloses a preparation method of ZnO composite nano sheet, which belongs to the technical field of semiconductor photocatalysis. Background technique [0002] With the continuous advancement of the industrialization process, the environmental problems caused by organic pollution are becoming more and more serious. Semiconductor photocatalysis technology, as a pollution-free and sustainable green technology, is increasingly received people's attention. Due to the shortcomings of traditional photocatalysts such as wide bandgap width and easy recombination of photogenerated carriers, [0003] make it limited in application. In recent years, semiconductor composite materials have gradually become a research hotspot in the field of new photocatalyst development due to their large visible light a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80B01J35/02C02F1/30C02F101/30
CPCB01J23/80B01J35/004B01J35/023C02F1/30C02F2101/308
Inventor 杨静王美燕赵素素刘洋洋武博文
Owner SHANDONG UNIV OF SCI & TECH
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