Process for preparing boron nitride nano tube
A technology of boron nitride nanotubes and boron oxide, applied in chemical instruments and methods, nitrogen compounds, inorganic chemistry, etc., can solve the problems of low purity and low yield of boron nitride nanotubes
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Embodiment 1
[0021] Embodiment 1: With the boron powder that purity is 99.8% as raw material, after ball milling for a certain period of time, feed flowing ammonia in the vacuum tube furnace for heating, the flow rate of ammonia is 100ml / min, and the speed of temperature rise is 10°C / min . When the temperature reaches 1000°C, keep at constant temperature for another 6 hours. Wash the sample several times with dilute hydrochloric acid, distilled water and ethanol, and dry it in a vacuum oven to obtain a white powder, which is the prepared boron nitride nanotubes with bamboo structure.
Embodiment 2
[0022] Embodiment 2: With the boron powder that purity is 99.8% as raw material, feed the ammonia gas of flowing in the vacuum tube furnace after ball milling for a certain period of time to heat, the flow velocity of ammonia gas is 100ml / min, the speed of heating up 10 ℃ / min . When the temperature reaches 1200°C, keep at constant temperature for another 6 hours. A white powder is obtained, which is the prepared boron nitride nanotubes mainly having a cylindrical structure and a small amount of bamboo structure.
Embodiment 3
[0024] A certain proportion of boron powder (purity 99.8%) and Fe 2 o 3 (Analytical pure) After ball milling, feed flowing ammonia in the vacuum tube furnace for heating, the flow rate of ammonia is 100ml / min, and the rate of temperature rise is 6-10°C / min. When the temperature reaches 1300°C, keep at constant temperature for another 3 hours. Wash the sample several times with dilute hydrochloric acid, distilled water and ethanol, and dry it in a vacuum oven to obtain a white powder, which is the prepared boron nitride nanotube.
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