Method for preparing pale-antimony mixed nano tin-oxide powder
A nano-tin oxide, antimony doping technology, applied in the field of nano-materials, can solve the problems of high production cost, not easy to industrialize, affect the electrical conductivity of powder, etc., meet the requirements of equipment is not high, easy to industrialize production, shorten production effect of cycles
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Embodiment 1
[0032] Accurately weigh 5.93g of Sn powder, Sb 2 o 3 Powder 0.39g (the doping ratio is Sn: Sb material molar ratio is 5%) is placed in the round-bottomed flask, and the round-bottomed flask is kept at 50 ℃, and 5mol L -1 HNO 3 Add it dropwise into the flask under vigorous stirring until a clear, transparent light-colored acidic mixed solution is formed in the flask. Mix this acidic mixed solution with 6mol·L -1 The aqueous ammonia solution was added dropwise into a vigorously stirred round-bottom flask in parallel flow, the pH value of the reaction was controlled to be 7, the reaction temperature was controlled to be 30°C, and the reaction was carried out for 1 hour to obtain a precipitate. The precipitate was filtered, washed with distilled water, and suction filtered to remove impurity ions. This washing process was repeated twice, and then washed twice with absolute ethanol. The precipitate was dried at 100°C for 2 hours, ground, and passed through a 200-mesh sieve. Th...
Embodiment 2
[0035] Accurately weigh 5.93g of Sn powder, Sb 2 o 3 Powder 0.39g (the molar ratio of Sn: Sb substance is 5%) is placed in the round-bottomed flask, and the round-bottomed flask is kept at 20°C, and 5mol L -1 HNO 3 Add it dropwise into the flask under vigorous stirring until a clear, transparent light-colored acidic mixed solution is formed in the flask. Mix this acidic mixed solution with 8mol·L -1 The aqueous ammonia solution was added dropwise into a vigorously stirred round-bottom flask in parallel flow, the pH value of the reaction was controlled to be 4, the reaction temperature was controlled to be 60°C, and the reaction was carried out for 1 hour to obtain a precipitate. The precipitate was filtered, washed with distilled water, and suction filtered to remove impurity ions. This washing process was repeated twice, and then washed twice with absolute ethanol. The precipitate was dried at 100°C for 2 hours, ground, and passed through a 200-mesh sieve. Then calcined ...
Embodiment 3
[0038] Accurately weigh 5.90g of Sn powder, Sb 2 o 3 Powder 0.22g (the doping ratio is Sn: Sb material ratio is 3%) is placed in the round bottom flask, the round bottom flask is kept at 40 ℃, and 1mol L -1 HNO 3 Add it dropwise into the flask under vigorous stirring until a clear, transparent light-colored acidic mixed solution is formed in the flask. Mix this acidic mixed solution with 12mol·L -1Aqueous ammonia solution was added dropwise into a vigorously stirred round-bottomed flask in parallel flow, the pH value of the reaction was controlled to be 10, the reaction temperature was controlled to be 80°C, and the reaction was carried out for 2 hours to obtain a precipitate. The precipitate was filtered, washed with distilled water, and suction filtered to remove impurity ions. This washing process was repeated twice, and then washed twice with absolute ethanol. The precipitate was dried at 100°C for 2 hours, ground, and passed through a 200-mesh sieve. Then calcined at...
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