Novel method for in situ preparing nano-zinc borate crystal whisker in normal pressure normal pressure liquid phase
A nano-zinc borate, in-situ preparation technology, applied in chemical instruments and methods, solutions from room temperature liquid solvents, single crystal growth, etc. Complex operation and other problems, to achieve high economic value and social value, improve market competitiveness, simple preparation process effect
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Embodiment 1
[0011] 1. Add 50ml of Na with a molar content of 0.1mol / l to the three-necked flask 2 B 4 o 7 10H 2 O placed in a 70°C water bath;
[0012] 2. Under stirring, add 10ml of 2mol / l Zn(NO 3 ) 2 ·6H 2 O solution;
[0013] 3. Use alkali to adjust the pH value of the solution;
[0014] 4. Keep the temperature and continue to stir for 7 hours;
[0015] 5. Filter and wash the above precipitate;
[0016] 6. Dehydration and drying at 60°C, and grinding to obtain zinc borate crystal powder with irregular morphology.
Embodiment 2
[0018] 1. Add 50ml of Na with a molar content of 0.1mol / l to the three-necked flask 2 B 4 o 7 10H 2 O was placed in a water bath at 50°C, and the cationic surfactant was added and stirred evenly.
[0019] 2. Under stirring, add 10ml of 2mol / l Zn(NO 3 ) 2 ·6H 2 O solution;
[0020] 3. Use alkali to adjust the pH value of the solution;
[0021] 4. Keep the temperature and continue to stir for 7 hours;
[0022] 5. Filter and wash the above precipitate;
[0023] 6. Dehydration and drying at 60°C, and grinding to obtain flaky zinc borate crystal powder.
Embodiment 3
[0025] 1. Add 50ml of Na with a molar content of 0.1mol / l to the three-necked flask 2 B 4 o 7 10H 2 O was placed in a 70°C water bath, and the cationic surfactant was added and stirred evenly.
[0026] 2. Under stirring, add 10ml of 2mol / l Zn(NO 3 ) 2 ·6H 2 O solution;
[0027] 3. Use alkali to adjust the pH value of the solution;
[0028] 4. Keep the temperature and continue to stir for 7 hours;
[0029] 5. Filter and wash the above precipitate;
[0030] 6. Dehydrate and dry at 60°C, and grind to obtain nano-zinc borate whisker powder with a diameter of 20nm-40nm, a length of 500nm-1μm, and an aspect ratio of 25-50.
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Abstract
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