A kind of doped hexagonal boron nitride nanosheet, its preparation method, catalyst and its application as carrier
A technology of hexagonal boron nitride and nanosheets, which is applied in chemical instruments and methods, nanotechnology, nanotechnology, etc., and achieves the effects of simple preparation method, good quality and strong catalytic effect
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Embodiment 1
[0025] A method for preparing carbon-doped boron nitride nanosheets (CBN):
[0026] Take 0.31 g of boric acid, 0.78 g of perylenetetracarboxylic anhydride, and 7.2 g of urea into a 100 mL flask, then add an appropriate amount of distilled water, stir for 0.5 h, then spin evaporate to remove water, and dry overnight at 65 °C. After the obtained solid was ground evenly, it was put into a tube furnace. In an inert atmosphere, the temperature was programmed to 900 °C and maintained at this temperature for 3 h. After the reaction, cool to room temperature under the protection of an inert gas, take out the product, grind it, and boil it in hot water at 90°C for 0.5-1h. Filter while hot, wash several times with plenty of hot water and 95% ethanol successively. Finally, the filter cake was dried in a vacuum oven and weighed.
Embodiment 2
[0028] A method for preparing phosphorus-doped boron nitride nanosheets (PBN):
[0029] Take 0.62 g of boric acid, 0.31 g of red phosphorus, and 7.2 g of urea and add them into a 100 mL flask, then add an appropriate amount of distilled water, stir for 0.5 h, spin evaporate to remove water, and dry at 65°C overnight. After the obtained solid was ground evenly, it was put into a tube furnace. In an inert atmosphere, the temperature was programmed to 1000 °C and maintained at this temperature for 3 h. After the reaction, cool to room temperature under the protection of an inert gas, take out the product, grind it, and boil it in hot water at 90°C for 0.5-1h. Filter while hot, wash several times with a lot of hot water, toluene and 95% ethanol successively. Finally, the filter cake was dried in a vacuum oven and weighed. The PBN nanosheets were tested by field emission scanning electron microscopy (FESEM). Such as figure 1 As shown, PBN nanosheets have few layers, small thic...
Embodiment 3
[0031] A method for preparing carbon-doped boron nitride nanosheets (CBN):
[0032] Take 0.11 g of boron, 0.78 g of perylenetetracarboxylic anhydride, and 7.2 g of urea into a 100 mL flask, then add an appropriate amount of distilled water, stir for 0.5 h, then spin evaporate to remove water, and dry overnight at 65 °C. After the obtained solid was ground evenly, it was put into a tube furnace. In an inert atmosphere, the temperature was programmed to 900 °C and maintained at this temperature for 3 h. After the reaction, cool to room temperature under the protection of an inert gas, take out the product, grind it, and boil it in hot water at 90°C for 0.5-1h. Filter while hot, wash several times with plenty of hot water and 95% ethanol successively. Finally, the filter cake was dried in a vacuum oven and weighed.
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