a beaded chain ceo 2 Nanomaterials and their preparation methods
A nanomaterial and bead chain technology, applied in chemical instruments and methods, rare earth metal oxides/hydroxides, rare earth metal compounds, etc., can solve problems such as poor dispersibility, achieve low cost, good dispersibility and crystallinity, The effect of cheap and easily available raw materials
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Embodiment 1
[0032] 1.1 Rinse fresh eggshells with clean water and immerse them in a dilute nitric acid solution with a concentration of 1 M. After the hard carbonate shell on the surface is separated from the inner egg membrane, take out the egg membrane and rinse it with deionized water repeatedly until neutral, 60 After drying at °C, the egg film template was obtained for subsequent use;
[0033] 1.2 Add 0.5 g Ce(NO 3 ) 3 ∙6H 2 O was added to 40 mL of absolute ethanol, and it was completely dissolved to obtain Ce(NO 3 ) 3 ethanol solution;
[0034] 1.3 Add 1.5 g of egg membrane template dried in step 1.1 to Ce(NO 3 ) 3 ethanol solution, stirring and impregnating for 12 hours, taking out all the ethanol liquid; drying the remaining egg film in an oven at 60 °C;
[0035] 1.4 The product of step 1.3 was calcined under an air atmosphere, and the temperature was raised to 1100 °C at a rate of 5 °C / min, and kept for 2 h, so that Ce(NO 3 ) 3 into CeO 2 , and the egg membrane componen...
Embodiment 2
[0038] 2.1 Rinse fresh eggshells with clean water and immerse them in a dilute nitric acid solution with a concentration of 3 M. After the hard carbonate shell on the surface is separated from the inner egg membrane, take out the egg membrane and rinse it with deionized water repeatedly until it becomes neutral. After drying at °C, the egg film template was obtained for subsequent use;
[0039] 2.2 Add 0.5 g Ce(NO 3 ) 3 ∙6H 2 O was added to 40 mL of absolute ethanol, and it was completely dissolved to obtain Ce(NO 3 ) 3 ethanol solution;
[0040] 2.3 Add 1.5 g of egg membrane template dried in step 2.1 to Ce(NO 3 ) 3 The ethanol solution was stirred and soaked for 12 h, and all the ethanol liquid was taken out; the remaining egg film was dried in an oven at 60 °C;
[0041] 2.4 The product of step 2.3 was calcined under an air atmosphere, and the temperature was raised to 1100 °C at a rate of 8 °C / min, and kept for 2 h, so that Ce(NO 3 ) 3 into CeO 2 , and the egg mem...
Embodiment 3
[0044] 3.1 Rinse fresh eggshells with clean water and immerse them in a dilute nitric acid solution with a concentration of 0.5 M. After the hard carbonate shell on the surface is separated from the inner egg membrane, take out the egg membrane and rinse it with deionized water repeatedly until it becomes neutral. After drying at °C, the egg film template was obtained for subsequent use;
[0045] 3.2 Add 0.25 g Ce(NO 3 ) 3 ∙6H 2 O was added to 40 mL of absolute ethanol, and it was completely dissolved to obtain Ce(NO 3 ) 3 ethanol solution;
[0046] 3.3 Add 1.5 g of egg membrane template dried in step 3.1 to Ce(NO 3 ) 3 ethanol solution, stirring and impregnating for 12 hours, taking out all the ethanol liquid; drying the remaining egg film in an oven at 60 °C;
[0047] 3.4 The product of step 3.3 was calcined under an air atmosphere, and the temperature was raised to 1100 °C at a rate of 5 °C / min, and kept for 2 h, so that Ce(NO 3 ) 3 into CeO 2 , and the egg membra...
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