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Biological template method for preparing tubular ZnO-SnO2 composite nano material

A composite nanomaterial, zno-sno2 technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve ecological environment and human health hazards, affect aquatic life Plant photosynthesis, difficult biodegradation and other problems, to achieve the effect of good repeatability, high catalytic activity and stability, and simple preparation method

Active Publication Date: 2021-05-28
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Environmental wastewater contains a large number of organic pollutants (such as methylene blue, methyl orange, Congo red, etc.), which have the characteristics of high chroma, biotoxicity, and refractory biodegradation. Entering the water environment will seriously affect the photosynthesis of aquatic plants. Serious harm to the ecological environment and human health

Method used

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  • Biological template method for preparing tubular ZnO-SnO2 composite nano material
  • Biological template method for preparing tubular ZnO-SnO2 composite nano material
  • Biological template method for preparing tubular ZnO-SnO2 composite nano material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Prepare the template

[0028] Purchase fresh bean sprouts and wash off the visible stains on the surface, cut the stalks into about 2cm in length, soak them in 0.1mol / L hydrochloric acid solution for 12 hours, wash them with deionized water until neutral, and form a bean sprout template .

[0029] (2) Dip template

[0030] Disperse 10g of bean sprouts template in 200mL of absolute ethanol to form A mixed solution. Dissolve zinc nitrate and tin tetrachloride in water to prepare an aqueous solution with a molar ratio of 1:0.2, which is referred to as solution B; and the total concentration of the metal salt solution in the aqueous solution is 0.2mol / L. Take 200mL of solution B, add it dropwise to solution A under magnetic stirring, and keep stirring and impregnating for 12h.

[0031] (3) Preparation of a tubular ZnO-SnO 2 Composite Nanomaterials

[0032] The impregnated template was taken out, washed several times with deionized water, dried at 60°C, calcined at ...

Embodiment 2

[0035] (1) Prepare the template

[0036] Purchase fresh bean sprouts and wash off the visible stains on the surface, cut the stalks into about 2cm in length, soak them in 0.1mol / L hydrochloric acid solution for 12 hours, wash them with deionized water until neutral, and form a bean sprout template .

[0037] (2) Dip template

[0038] Disperse 10g template in 200mL absolute ethanol to form A mixed solution. Dissolve tin chloride and zinc chloride in water to prepare an aqueous solution with a molar ratio of 1:0.4, denoted as solution B; and the total concentration of the metal salt solution in the aqueous solution is 0.4mol / L. Take 200mL of solution B, add it dropwise to solution A under magnetic stirring, and keep stirring for 24 hours.

[0039] (3) Preparation of a tubular ZnO-SnO 2 Composite Nanomaterials

[0040] The impregnated template was taken out, washed several times with deionized water, dried at 60°C, calcined in a muffle furnace at 650°C for 3 hours, and coole...

Embodiment 3

[0043] (1) Prepare the template

[0044] Purchase fresh bean sprouts and wash off the visible stains on the surface, cut the stalks into about 2cm in length, soak them in 0.1mol / L hydrochloric acid solution for 12 hours, wash them with deionized water until neutral, and form a bean sprout template .

[0045] (2) Dip template

[0046] Disperse 5 g of bean sprouts template in 100 mL of absolute ethanol to form A mixed solution. Dissolve tin chloride and zinc sulfate in water to prepare an aqueous solution with a molar ratio of 1:0.2, denoted as solution B; and the total concentration of the metal salt solution in the aqueous solution is 0.6mol / L. Take 100mL of solution B, add it dropwise into solution A under magnetic stirring, and keep stirring and impregnating for 6-48h.

[0047] (3) Preparation of a tubular ZnO-SnO 2 Composite Nanomaterials

[0048] The impregnated template was taken out, washed several times with deionized water, dried at 60°C, calcined in a muffle furn...

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Abstract

The invention discloses a method for preparing a tubular ZnO-SnO2 composite nano material based on a bean sprout template method. The method comprises the following steps: (1) purchasing fresh bean sprouts, and pretreating the fresh bean sprouts to form a bean sprout template; (2) dipping the template; and (3) taking out the impregnated template, cleaning, soaking and drying the template, calciningthe template in a muffle furnace, and naturally cooling the template to obtain the tubular ZnO-SnO2 composite nano material. The method for preparing the tubular ZnO-SnO2 composite nanomaterial is simple, the raw materials are wide in source, low in cost, green and free of pollution, and the prepared material has high catalytic activity and thermal stability; when the material is applied to purification treatment of organic dye wastewater, the organic dye wastewater can be effectively catalytically degraded.

Description

technical field [0001] The invention relates to a method for preparing a tubular composite nanomaterial, in particular to preparing a tubular ZnO-SnO with bean sprouts as a template 2 The method for compounding nanometer materials belongs to the technical field of semiconductor photocatalysis. Background technique [0002] Environmental wastewater contains a large number of organic pollutants (such as methylene blue, methyl orange, Congo red, etc.), which have the characteristics of high chroma, biotoxicity, and refractory biodegradation. Entering the water environment will seriously affect the photosynthesis of aquatic plants. Serious harm to the ecological environment and human health. Among the many methods to control water pollution, semiconductor photocatalysis technology, as a green, non-polluting and sustainable technology, has the advantages of low cost, non-toxic, strong photocatalytic activity, etc., because it can use solar energy to solve the increasingly seriou...

Claims

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Application Information

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IPC IPC(8): B01J23/14B01J37/02B01J37/00B01J37/08C02F1/30C02F101/36C02F101/38
CPCB01J23/14B01J23/002B01J37/0201B01J37/0018C02F1/30C02F2305/10C02F2101/308C02F2101/36C02F2101/38C02F2101/40B01J35/23B01J35/39
Inventor 杨静张鑫单聪聪马素梅
Owner SHANDONG UNIV OF SCI & TECH
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