A kind of praseodymium cobalt oxide nanorod and preparation method thereof
A technology of cobalt oxide and nanorods, applied in nanotechnology, nanotechnology, cobalt oxide/cobalt hydroxide, etc., to achieve the effects of easy control, high purity and high yield
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Embodiment 1
[0029] Dissolve cobalt chloride, praseodymium chloride, and polyethylene oxide in a molar ratio of 100:100:10 into a mixed solvent of water and polyethylene glycol, wherein the volume ratio of water and polyethylene glycol is 100:10, and then heat To 80 ℃, stirring time 1h after constant temperature. Then add hydrazine hydrate and sodium hydroxide in sequence, wherein the molar ratio of hydrazine hydrate and cobalt chloride is 1:10, and the molar ratio of sodium hydroxide and cobalt chloride is 3:2, and the reaction time is 30 minutes. Finally, the washing was repeated three times with water and ethanol in sequence, and the drying temperature was 80° C., and the drying time was 5 hours. Praseodymium cobalt oxide nanorods with a length of about 1 μm and a diameter of about 50 nm were prepared.
Embodiment 2
[0031] Dissolve cobalt chloride, praseodymium chloride and polyethylene oxide in a molar ratio of 100:100:15 into a mixed solvent of water and polyethylene glycol, wherein the volume ratio of water and polyethylene glycol is 100:15, and then heat To 90 ℃, stirring time 2h after constant temperature. Then add hydrazine hydrate and sodium hydroxide in sequence, wherein the molar ratio of hydrazine hydrate and cobalt chloride is 2:10, and the molar ratio of sodium hydroxide and cobalt chloride is 3:2, and the reaction time is 30 minutes. Finally, the washing was repeated four times with water and ethanol in turn, and the drying temperature was 100° C., and the drying time was 6 hours. Praseodymium cobalt oxide nanorods with a length of about 1 μm and a diameter of about 50 nm were prepared.
Embodiment 3
[0033] Dissolve cobalt chloride, praseodymium chloride, and polypropylene oxide in a mixed solvent of water and polypropylene glycol in a molar ratio of 100:100:20, wherein the water and polypropylene glycol are in a volume ratio of 100:20, and then heated to 100°C and kept at a constant temperature After stirring time 2h. Then add hydrazine hydrate and potassium hydroxide in sequence, wherein the molar ratio of hydrazine hydrate and cobalt chloride is 3:10, and the molar ratio of potassium hydroxide and cobalt chloride is 4:2, and the reaction time is 40 minutes. Finally, the washing was repeated five times with water and ethanol in sequence, the drying temperature was 90° C., and the drying time was 10 hours. Praseodymium cobalt oxide nanorods with a length of about 1 μm and a diameter of about 50 nm were prepared.
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