A kind of preparation method of hollow polyhedral nano α-fe2o3
A kind of -fe2o3, nanotechnology, applied in the field of preparation of hollow polyhedral nano-α-Fe2O3
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Embodiment 1
[0029] (1) Under stirring at room temperature, dissolve 0.81 g of ferric chloride and 0.32 g of trimesic acid into 30 mL of deionized water to obtain solution A;
[0030] (2) Under stirring at room temperature, 0.38 g of (NH 4 ) 2 CO 3 Add to 30mL solution A, stir to dissolve and continue to stir for at least 30min to obtain solution B; then add 0.15g of hydrofluoric acid solution with a mass content of 20% to solution B, and continue to stir for 30min to obtain solution C;
[0031] (3) Transfer the solution C to a crystallization kettle with a polytetrafluoroethylene liner, raise the temperature to 150°C at a heating rate of 5°C / min, maintain it for 2 hours, and then raise the temperature to 190°C at a heating rate of 2°C / min, Reaction 10h;
[0032] (4) After the reaction is over, rinse the obtained sample with tap water and cool it down to room temperature, then centrifuge the product, wash the obtained solid three times with deionized water and ethanol, and then dry it a...
Embodiment 2
[0034] (1) Under stirring at room temperature, dissolve 0.81 g of ferric chloride and 0.32 g of trimesic acid into 30 mL of deionized water to obtain solution A;
[0035] (2) Under stirring at room temperature, 0.38 g of (NH 4 ) 2 CO 3 Add it into 30mL of solution A, stir to dissolve and continue to stir for at least 30min to obtain solution B; then add 0.30g of hydrofluoric acid solution with a mass content of 20% to solution B, and continue to stir for 30min to obtain solution C;
[0036] (3) Transfer the solution C to a crystallization kettle with a polytetrafluoroethylene liner, raise the temperature to 150°C at a heating rate of 5°C / min, maintain it for 2 hours, and then raise the temperature to 190°C at a heating rate of 2°C / min, Reaction 10h;
[0037] (4) After the reaction is finished, rinse the obtained sample with tap water and cool it down to room temperature, then centrifuge the product, wash the obtained solid three times with deionized water and ethanol, and t...
Embodiment 3
[0039] (1) Under stirring at room temperature, dissolve 0.81 g of ferric chloride into 30 mL of deionized water to obtain solution A;
[0040] (2) Under stirring at room temperature, 0.38 g of (NH 4 ) 2 CO 3 Add it into 30mL of solution A, stir to dissolve and continue to stir for at least 30min to obtain solution B; then add 0.30g of hydrofluoric acid solution with a mass content of 20% to solution B, and continue to stir for 30min to obtain solution C;
[0041] (3) Transfer the solution C to a crystallization kettle with a polytetrafluoroethylene liner, raise the temperature to 150°C at a heating rate of 5°C / min, maintain it for 2 hours, and then raise the temperature to 190°C at a heating rate of 2°C / min, Reaction 10h;
[0042] (4) After the reaction is finished, rinse the obtained sample with tap water and cool it down to room temperature, then centrifuge the product, wash the obtained solid three times with deionized water and ethanol, and then dry it at 120°C to obtai...
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