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Preparation method of tin dioxide/copper oxide composite nano material with spherical hierarchical structure

A composite nanomaterial and hierarchical structure technology is applied in the field of preparation of hierarchically structured tin dioxide/copper oxide composite nanomaterials, which can solve the problems of small specific surface area, influence on the performance of catalysts, and high calcination temperature, and achieve the effect of high catalytic activity.

Inactive Publication Date: 2017-02-15
BOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the high calcination temperature in the preparation process, the traditional solid-phase synthesis method not only wastes resources, but also has disadvantages such as impurity and large size in the product.
In the preparation process of co-precipitation method, it is easy to generate impurity phases, and a large amount of precipitating agent is used, which increases the preparation cost
The prepared product has low purity and small specific surface area, which affects its performance as a catalyst

Method used

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  • Preparation method of tin dioxide/copper oxide composite nano material with spherical hierarchical structure
  • Preparation method of tin dioxide/copper oxide composite nano material with spherical hierarchical structure
  • Preparation method of tin dioxide/copper oxide composite nano material with spherical hierarchical structure

Examples

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Effect test

Embodiment 1

[0035] Accurately weigh copper acetylacetonate and tin tetrachloride in a molar ratio of 1:1 and put them into methanol (12C, 99.95%) to stir and dissolve. The molar concentration of copper acetylacetonate is 0.01 mol / L. The resulting mixed solution was subjected to solvothermal reaction, the solvothermal reaction temperature was 200 ° C, and the solvothermal reaction time was 24 hours. After the solvothermal reaction was completed, it was naturally cooled to room temperature, and the product obtained by the reaction was filtered and washed and placed in an oven at a programmed temperature increase rate of 5°C / min, and dried at 120°C for 5 hours. Then place it in a muffle furnace for calcination, the calcination time is 8 hours, the calcination temperature is 500 °C, and the heating rate is 10 °C / min. After natural cooling, the spherical hierarchical structure tin dioxide / copper oxide composite nanomaterial is obtained. The size of the large spheres is 3 mm, the size of the n...

Embodiment 2

[0038]Accurately weigh copper acetylacetonate and tin tetrachloride at a molar ratio of 1:1 and put them into methanol (12C, 99.95%) to stir and dissolve. The molar concentration of copper acetylacetonate is 0.02 mol / L. The mixed solution obtained is carried out solvothermal reaction, and the solvothermal reaction temperature is 110 ℃, and the solvothermal reaction time is 48 hours. After the solvothermal reaction was completed, it was naturally cooled to room temperature, and the product obtained by the reaction was filtered and washed and placed in an oven at a programmed temperature increase rate of 5°C / min, and dried at 120°C for 5 hours. Then place it in a muffle furnace for calcination, the calcination time is 4 hours, the calcination temperature is 700 °C, and the heating rate is 10 °C / min. After natural cooling, the spherical hierarchical structure tin dioxide / copper oxide composite nanomaterial is obtained. The size of the large spheres is 6 mm, the size of the nanop...

Embodiment 3

[0041] Accurately weigh copper acetylacetonate and tin tetrachloride at a molar ratio of 1:1 and put them into methanol (12C, 99.95%) to stir and dissolve. The molar concentration of copper acetylacetonate is 0.03 mol / L. The resulting mixed solution was subjected to solvothermal reaction, the solvothermal reaction temperature was 220 ° C, and the solvothermal reaction time was 12 hours. After the solvothermal reaction was completed, it was naturally cooled to room temperature, and the product obtained by the reaction was filtered and washed and placed in an oven at a programmed temperature increase rate of 10 °C / min, and dried at 100 °C for 5 hours. Then place it in a muffle furnace for calcination, the calcination time is 5 hours, the calcination temperature is 800 °C, and the heating rate is 10 °C / min. After natural cooling, the spherical hierarchical structure tin dioxide / copper oxide composite nanomaterial is obtained. The size of the large spheres is 4 mm, the size of th...

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Abstract

The invention belongs to the field of preparation of inorganic non-metallic materials and particularly relates to a preparation method of a tin dioxide / copper oxide composite nano material with a spherical hierarchical structure. The preparation method comprises the following steps: fully dissolving copper acetylacetonate and tin tetrachloride in a methanol solution, performing solvothermal reaction, filtering, washing, drying, calcining and cooling to obtain the tin dioxide / copper oxide composite nano material with the spherical hierarchical structure. The tin dioxide / copper oxide composite nano material prepared by the preparation method provided by the invention is high in purity and low in preparation cost, the size of a whole big ball is 3-6 mm, the size of a nano particle is 20-30 nm, the product uniformity and the dispersibility are good, and the large-scale production is easy. The tin dioxide / copper oxide composite nano material with the spherical hierarchical structure, prepared by the preparation method provided by the invention, has higher visible light photocatalytic activity and wide application prospect in the fields of dye wastewater and indoor harmful gas degradation, photocatalytic disinfection and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic non-metallic materials, and in particular relates to a preparation method of a spherical hierarchical structure tin dioxide / copper oxide composite nano material. Background technique [0002] Tin dioxide (SnO 2 ) is an n-type semiconductor material with wide bandgap and direct bandgap. The bandgap width is 3.6-3.8eV. It has excellent flame-retardant and conductive properties. catalytic activity, etc. Due to the wide band gap of tin dioxide and less response to the visible spectrum, there are few related studies on the direct use of tin dioxide for photocatalytic degradation of pollutants. In order to improve the catalytic performance of tin dioxide, it is one of the very effective methods to choose to combine with other semiconductors with smaller band gaps. Since tin dioxide is an n-type semiconductor, it is selected to be combined with a p-type semiconductor copper oxide (0.9...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/835B01J35/08B82Y30/00B82Y40/00C02F1/30C02F101/38
CPCB82Y30/00B82Y40/00C02F1/30B01J23/002B01J23/835C02F2101/38C02F2101/40C02F2101/308C02F2305/10B01J35/51B01J35/40B01J35/39
Inventor 许家胜黄雨婷张杰
Owner BOHAI UNIV
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