Multi-level structure alpha type nickel hydroxide prepared by microwave auxiliary and method thereof
A microwave-assisted nickel hydroxide technology, which is applied in the direction of nickel oxide/nickel hydroxide, nanostructure manufacturing, and manipulation of single atoms, can solve the problems of long reaction time and achieve fast reaction time, simple preparation process, and short preparation process Effect
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[0027] Example 1: α-type nickel hydroxide nano petals
[0028] 0.581 g of nickel nitrate and 0.119 g of urea are dissolved in a mixed solution of 10 ml of ultrapure water and 10 ml of ethanol, and magnetically stirred to obtain a uniformly dispersed solution. The solution was transferred to a 30 ml quartz reaction flask and sealed. Put the reaction flask into the microwave reaction device and react quickly at 120°C for 1 minute. The reaction flask was rapidly cooled to room temperature under the blowing of compressed air, and the products were separated by centrifugation. The obtained products were washed repeatedly with ultrapure water and absolute ethanol, and dried in air at 80°C. figure 2 In its scanning electron micrograph, it is clear that the obtained nano petals are flakes, and a large number of petals are stacked randomly.
Example Embodiment
[0029] Example 2: α-type nickel hydroxide nanoflower
[0030] 0.581 g of nickel nitrate and 0.119 g of urea are dissolved in a mixed solution of 10 ml of ultrapure water and 10 ml of ethanol, and magnetically stirred to obtain a uniformly dispersed solution. The solution was transferred to a 30 ml quartz reaction flask and sealed. Put the reaction flask into the microwave reaction device and react quickly at 100°C (or 180°C) for 30 minutes. The reaction flask was rapidly cooled to room temperature under the blowing of compressed air, and the products were separated by centrifugation. The obtained products were washed repeatedly with ultrapure water and absolute ethanol, and dried in air at 80°C. image 3 a and 3b are the scanning electron micrographs of the samples obtained at 100 and 180°C, respectively, and the nano-flower-like morphology can be seen. Each flower is composed of a dozen nano petals connected to each other, and the thickness of the nano petals is 30-40 nanometer...
Example Embodiment
[0031] Example 3: α-type nickel hydroxide nanoflower
[0032] 0.474 g of nickel chloride and 0.119 g of urea are dissolved in a mixed solution of 10 ml of ultrapure water and 10 ml of ethanol, and magnetically stirred to obtain a uniformly dispersed solution. The solution was transferred to a 30 ml quartz reaction flask and sealed. Put the reaction flask into the microwave reaction device and react rapidly at 120°C for 30 minutes. The reaction flask was rapidly cooled to room temperature under the blowing of compressed air, and the products were separated by centrifugation. The obtained products were washed repeatedly with ultrapure water and absolute ethanol, and dried in air at 80°C. Figure 4 According to the corresponding scanning electron microscope photograph, it can be seen that the morphology is still flower-like, but the thickness of the nano-petals that make up the flower is relatively thin.
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