Synthesis method of porous flower-like alpha-Fe2O3 self-assembly nano-material
A synthesis method and nanomaterial technology, applied in the field of micro-nano material preparation, can solve the problems of many surface defects and poor crystallinity of materials, and achieve the effect of novel reaction system
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Embodiment 1
[0026] Example 1 Porous flower-like α-Fe 2 o 3 Synthesis of Self-Assembled Nanomaterials
[0027] Porous flower-like α-Fe was prepared by the following method 2 o 3 Self-assembled nanomaterials:
[0028] (1) 1.5061 g of ferrous chloride tetrahydrate (FeCl 2 ∙4H 2 O), 0.4040 g of sodium p-aminosalicylate and 0.5425 g of ammonium sebacate were added to 30.0 mL of deionized water, and stirred to obtain a transparent solution;
[0029](2) Transfer the above solution to the reaction kettle, react at 90 °C for 10 h, centrifuge and wash the product to obtain the FeOOH precursor;
[0030] (3) Put the precursor into the muffle furnace at room temperature, raise the temperature to 450 °C at a rate of 2 °C / min, keep it for 2 h, and cool to room temperature to obtain the final product.
[0031] The X-ray diffraction pattern of the precursor product is as follows figure 1 shown. it can be discovered, figure 1 All the X-ray diffraction peaks are consistent with the JCPDS card (01-...
Embodiment 2
[0032] Example 2 Porous flower-like α-Fe 2 o 3 Synthesis of Self-Assembled Nanomaterials
[0033] Porous flower-like α-Fe was prepared by the following method 2 o 3 Self-assembled nanomaterials:
[0034] (1) Add 0.7832 g of FeCl 2 ∙4H 2 0.0.1765 g of sodium p-aminosalicylate and 0.3574 g of ammonium sebacate were added to 30.0 mL of deionized water, and stirred to obtain a transparent solution;
[0035] (2) Transfer the above solution to the reaction kettle, react at 80 °C for 4 h, centrifuge and wash the product to obtain the FeOOH precursor;
[0036] (3) Put the precursor into the muffle furnace at room temperature, raise the temperature to 400 °C at a rate of 3 °C / min, keep it for 1 h, and cool to room temperature to obtain α-Fe with a size of 0.35-0.65 μm 2 o 3 Flower-like self-assembled structure, the structural unit of which is porous α-Fe 2 o 3 Nanorods with an average diameter of 8-13 nm and an aspect ratio of 17-19:1.
Embodiment 3
[0037] Example 3 Porous flower-like α-Fe 2 o 3 Synthesis of Self-Assembled Nanomaterials
[0038] Porous flower-like α-Fe was prepared by the following method 2 o 3 Self-assembled nanomaterials:
[0039] (1) 2.2291 g of FeCl 2 ∙4H 2 0.0.8849 g of sodium p-aminosalicylate and 0.5888 g of ammonium sebacate were added to 30.0 mL of deionized water, and stirred to obtain a transparent solution;
[0040] (2) Transfer the above solution to the reaction kettle, react at 100 °C for 18 h, centrifuge and wash the product to obtain the FeOOH precursor;
[0041] (3) Put the precursor into a muffle furnace at room temperature, raise the temperature to 500 °C at a rate of 1 °C / min, keep it for 4 h, and cool to room temperature to obtain α-Fe with a size of 8.4-9.3 μm 2 o 3 Flower-like self-assembled structure, the structural unit of which is porous α-Fe 2 o 3 Nanorods with an average diameter of 72-78 nm and an aspect ratio of 22-25:1.
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