Preparation method of nanometer ball
A technology of nanospheres and products, applied in chemical instruments and methods, rare earth metal compounds, inorganic chemistry, etc., can solve the problems of high energy consumption and complexity, and achieve the effect of simple production process, low cost and simple process route
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Embodiment 1
[0010] The preparation method of cerium oxide nanospheres: Weigh 0.001 moles of cerium nitrate (positive trivalent) and 0.001 moles of potassium peroxodisulfate and 0.8 grams of polyethylene glycol and place them in a beaker, add 15 milliliters of deionized water, stir to dissolve and form a transparent Solution, then move the mixed solution into a closed reactor, react at 120°C for 7 hours, cool the closed reactor to room temperature, then wash the obtained product three times with deionized water, measure the pH value to 6, and finally Dried at 90°C to obtain cerium oxide nanosphere products. The product was identified as cubic phase cerium oxide by X-ray powder diffraction; the morphology of the product was spherical nanoparticles as detected by TEM electron microscopy.
Embodiment 2
[0012] The preparation method of cerium oxide nanospheres: Weigh 0.003 moles of cerium chloride (positive trivalent) and 0.001 moles of sodium persulfate and 1.5 grams of citric acid in a beaker, add 30 milliliters of deionized water, stir to dissolve and generate a transparent solution , then move the mixed solution into a closed reactor, react at 190°C for 17 hours, cool the closed reactor to room temperature, and then wash the resulting product with ethanol for 5 times, measure the pH value to 7, and finally cool it at 70°C Drying under low temperature to obtain cerium oxide nanosphere products. The product was identified as cubic phase cerium oxide by X-ray powder diffraction; the morphology of the product was spherical nanoparticles as detected by TEM electron microscopy.
Embodiment 3
[0014] The preparation method of lanthanum hydroxide nanospheres: Weigh 0.001 mole of lanthanum nitrate and put it into a beaker with 10 milliliters of deionized water, then add 5 milliliters of 5% potassium hydroxide solution as a precipitant to generate white lanthanum hydroxide precipitate , and then add 0.002 mole of citric acid to the white precipitate, stir it with a magnetic stirrer for 20 minutes, then transfer it to a 40 ml stainless steel airtight reaction kettle, and react at 120°C for 18 hours. After the reaction, cool naturally to At room temperature, the product was washed with ethanol three times, and the pH value was measured to be 6, and finally dried at 70°C to obtain a lanthanum hydroxide nanosphere product. The product was identified as hexagonal lanthanum hydroxide by X-ray powder diffraction; TEM and SEM electron microscopes detected that the product was spherical nanoparticles.
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