Method for producing cerium fluoride hollow nanostructured material
A technology of hollow nano and structural materials, applied in the direction of nanostructure manufacturing, chemical instruments and methods, nanotechnology, etc., to achieve the effect of controllable shape, cheap price and simple operation
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Embodiment 1
[0044] Example 1 Preparation of CeF with hexagonal cross-section using cerium ammonium sulfate as raw material 3 Hollow nanostructured materials.
[0045] Add 29mL distilled water, 1mL concentrated sulfuric acid, 0.3g KBrO 3 , 0.4g citric acid, 0.2gNaF, 0.4g ammonium cerium sulfate, sealed in an autoclave after stirring, and placed in an oven at 160°C for 24 hours, the CeF with a hexagonal cross section can be obtained 3 Hollow nanostructure materials, hollow nanostructures include hollow nanocages, nanorings or nano "cocoons", helical nanocages, etc. ( figure 1 , Figure 4 , Figure 11 ). Wherein the temperature range may be 140-170° C., the reaction time may be 12-100 hours, and the amount of ammonium cerium sulfate may be 0.1-0.8 g. 0.4g oxalic acid or glucose instead of citric acid is also the same.
Embodiment 2
[0046] Example 2 Preparation of CeF with hexagonal cross-section using cerium ammonium nitrate as raw material 3 Hollow nanostructured materials.
[0047] Add 29mL distilled water, 1mL concentrated sulfuric acid, 0.3g KBrO 3 , 0.4g citric acid, 0.2g NaF, 0.4g cerium ammonium nitrate, sealed in an autoclave after stirring, and placed in an oven at 160°C for 24 hours, the CeF with a hexagonal cross section can be obtained 3 Hollow nanostructured materials (see figure 2 ). Wherein the temperature range may be 140-170° C., the reaction time may be 12-100 hours, and the amount of ceric ammonium nitrate may be 0.1-0.8 g. 0.3g NaBrO 3 Replace KBrO 3 The same is true.
Embodiment 3
[0048] Example 3 with K 7 Ce 6 f 31 Preparation of CeF with hexagonal cross-section as raw material 3 Hollow nanostructured materials.
[0049] K 7 Ce 6 f 31 The starting material can be prepared at room temperature (see Figure 10 ), take a small beaker, add 40mL distilled water, then add 0.6g potassium salt (such as KBrO 3 , KCl, KNO 3 etc.), 0.4g fluoride (such as NaF, NH 4 F, NH 4 F·HF, etc.), 0.8g cerium salt (such as cerium ammonium sulfate, cerium ammonium nitrate, etc.), stirred for 5min, aged for 10 hours, filtered, washed and dried to obtain K 7 Ce 6 f 31 powder. Add 29mL distilled water, 1mL concentrated sulfuric acid, 0.3gKBrO 3 , 0.4g citric acid, 0.1g NaF, 0.2g K 7 Ce 6 f 31powder, sealed in an autoclave after stirring, and placed in an oven at 160°C for 24 hours to obtain CeF with a hexagonal cross-section 3 Hollow nanostructured materials (see image 3 ). Wherein the amount of NaF can be 0-2g, K 7 Ce 6 f 31 The amount of powder can be 0-4...
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