Method for preparing globular nanometer nickel borate
A technology of nano-boric acid and flower balls, which is applied in the direction of borate, nanotechnology, nanotechnology, etc., can solve the problems of large size and poor dispersion of nickel borate, and achieve the effect of low cost, good dispersion and simple method
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Embodiment 1
[0019] 2.9g of nickel nitrate and 0.4g of ammonium tetraborate were added to the hydrothermal synthesis reactor containing 60mL of distilled water, the molar ratio of nickel nitrate to ammonium tetraborate was 6:1, and the mass ratio of ammonium tetraborate to distilled water was 1:150 , placed in an oven at 150°C for hydrothermal reaction for 72 hours, cooled to room temperature, suction filtered, washed with distilled water 3 times, placed in an oven at 60°C for drying for 12 hours, and then the dried product was placed in a crucible, placed in a horse The temperature was raised to 1000°C at a heating rate of 5°C / min in a Furnace, and calcined at a constant temperature for 10 hours to prepare flower ball-shaped nanometer nickel borate.
[0020] The prepared products were characterized by Quanta200 environmental scanning electron microscope, JEM-2100 transmission electron microscope, and D / Max-3c X-ray diffractometer, respectively. The results are shown in Figures 1 to 3 . ...
Embodiment 2
[0022] 2.9g of nickel nitrate and 0.4g of ammonium pentaborate were added to the hydrothermal synthesis reactor containing 60mL of distilled water, the molar ratio of nickel nitrate to ammonium pentaborate was 6.7:1, and the mass ratio of ammonium pentaborate to distilled water was 1:150 , placed in an oven at 150°C for hydrothermal reaction for 72 hours, cooled to room temperature, suction filtered, washed with distilled water 3 times, placed in an oven at 60°C for drying for 12 hours, and then the dried product was placed in a crucible, placed in a horse It was heated to 1000°C at a heating rate of 5°C / min in a Furnace, and calcined at a constant temperature for 10 hours to prepare flower ball-shaped nano-nickel borate (see Figure 4 ).
Embodiment 3
[0024] 2.4g of nickel chloride and 0.6g of ammonium tetraborate are added to the hydrothermal synthesis reactor containing 60mL of distilled water, the molar ratio of nickel chloride to ammonium tetraborate is 4:1, and the mass ratio of ammonium tetraborate to distilled water is 1 : 100, placed in an oven at 150°C for hydrothermal reaction for 48 hours, cooled to room temperature, filtered with suction, washed 3 times with distilled water, placed in an oven at 60°C for drying for 12 hours, and then the dried product was put into a crucible and placed in a crucible. In a muffle furnace, the temperature was raised to 1000 °C at a heating rate of 5 °C / min, and calcined at a constant temperature for 8 hours to prepare flower ball-shaped nano-nickel borate (see Figure 5 ).
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