a znfe 2 o 4 Preparation method of cube structure and product obtained therefrom
A znfe2o4, cubic technology, applied in the field of functional materials, can solve the problems of poor shape controllability, difficulty in large-scale production, and high cost of raw materials, and achieve good dispersion, moderate acidity and alkalinity, and unique methods
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Embodiment 1
[0028] 1.1 Add 0.8800 g of potassium ferrocyanide, 16.1867 g of PVP, and 0.1563 g of tartaric acid into a mixed solution of 400 mL of ethanol and 10 mL of hydrochloric acid, stir for 30 min, and react for 24 h in a water bath at 80 °C, at 10,000 r / min centrifuged at a high speed for 5 min and then washed;
[0029] 1.2 Add the above product to 20 mL of methanol containing 0.0168 g of PDDA, 0.3099 g of zinc nitrate hexahydrate and 0.1710 g of 2-methylimidazole and sonicate for 5 min;
[0030] 1.3 After centrifugation and washing, the product was calcined in a muffle furnace at 550 °C for 6 h to obtain ZnFe 2 o 4 Cubic block structure. The phase structure of the product is as figure 1 As shown, it can be found that the X-ray diffraction peak of the product is consistent with the JCPDS standard card (01-1109), proving that the obtained product is ZnFe2 o 4 crystal phase; the microscopic morphology of the product is as follows figure 2 As shown, it can be seen from the figure...
Embodiment 2
[0032] 2.1 Add 0.7082 g of potassium ferrocyanide, 10.2337 g of PVP, and 0.0377 g of tartaric acid to a mixed solution of 400 mL of ethanol and 15 mL of hydrochloric acid, stir for 25 min, and react in a water bath at 70 °C for 13 h, at 8000 r / min Wash at a speed of centrifugation for 8 min;
[0033] 2.2 Add the above product to 28 mL of methanol containing 0.0108 g of PDDA, 0.2494 g of zinc nitrate hexahydrate and 0.0964 g of 2-methylimidazole and sonicate for 6 min;
[0034] 2.3 After centrifugation and washing, the product was calcined in a muffle furnace at 450 °C for 3 h to obtain ZnFe 2 o 4 Cubic structure with side lengths of 60-80 nm.
Embodiment 3
[0036] 3.1 Add 3.1105 g of potassium ferrocyanide, 49.0418 g of PVP, and 0.9947 g of tartaric acid to a mixed solution of 400 mL of ethanol and 5 mL of hydrochloric acid, stir for 40 min, and react for 15 h in a water bath at 90 °C, at 9000 r / min centrifuged at a high speed for 10 min and then washed;
[0037] 3.2 Add the above product to 50 mL of methanol containing 0.0951 g of PDDA, 1.0953 g of zinc nitrate hexahydrate and 0.4837 g of 2-methylimidazole and sonicate for 7 min;
[0038] 3.3 After centrifugation and washing, the product was calcined in a muffle furnace at 500 °C for 7 h to obtain ZnFe 2 o 4 Cubic structure with side lengths of 110-160 nm.
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