A kind of preparation method of spherical hierarchical structure tin dioxide/copper oxide composite nanomaterial
A technology of composite nanomaterials and hierarchical structure, which is applied in the field of preparation of hierarchical structure tin dioxide/copper oxide composite nanomaterials, can solve the problems of small specific surface area, low product purity, and easy occurrence of impurities in the product, and achieve high catalytic activity Effect
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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 obtained 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 from the reaction was filtered and washed, then placed in an oven, and dried at 120 °C for 5 hours at a programmed temperature increase rate of 5 °C / min. Then put 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 macrospheres is 3 μm, 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 obtained mixed solution was subjected to solvothermal reaction, the solvothermal reaction temperature was 110° C., and the solvothermal reaction time was 48 hours. After the solvothermal reaction was completed, it was naturally cooled to room temperature, and the product obtained from the reaction was filtered and washed, then placed in an oven, and dried at 120 °C for 5 hours at a programmed temperature increase rate of 5 °C / min. Then put 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 μm, the size of the n...
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 obtained 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, then placed in an oven, and dried at 100 °C for 5 hours at a programmed temperature increase rate of 10 °C / min. Then put it into 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 macrosphere is 4 μm, the size of the n...
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