A kind of preparation method of indium tin oxide powder
An indium tin oxide and powder technology is applied in the field of preparing indium tin oxide powder based on a microreactor, which can solve the problems of poor micro-mixing, difficult control of the preparation process, low supersaturation and the like, and achieve the effect of uniform particles
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[0015] see figure 1 , the invention provides a kind of preparation method of indium tin oxide powder, and this preparation method specifically comprises the following steps:
[0016] S1, providing a microporous membrane 100, the microporous membrane 100 has an upper surface and a lower surface opposite to the upper surface, the microporous membrane 100 includes a plurality of micropores, the plurality of micropores penetrate on the upper and lower surfaces of the microporous membrane 100;
[0017] S2, passing an indium tin aqueous solution 200, so that the indium tin aqueous solution 200 flows from the upper surface of the microporous membrane 100 to the lower surface of the microporous membrane 100 through the micropores;
[0018] S3, pass through an ammonia solution 300, so that the ammonia solution 300 flows along the direction of the lower surface of the microporous membrane 100, and the ammonia solution 300 is mixed with the indium tin solution 200 flowing to the lower s...
Embodiment 1
[0032] Weigh InCl 3 ‧4H 2 O and SnCl 4 ‧5H 2 O crystals, dissolved in deionized water to obtain indium tin aqueous solution, in which, InCl 3 The concentration is 1.8mol / L, In:Sn=9:1. Prepare an ammonia solution with a concentration of 8 mol / L. At room temperature, use a microporous membrane to mix and react the indium tin solution and the ammonia solution. The indium tin solution is the dispersed phase, and the ammonia solution is the continuous phase. The continuous phase is continuously sheared. The dispersed phase realizes rapid mixing of the two phases, and carries out co-precipitation reaction, continuous phase: dispersed phase = 2:1. The mixed mixture was passed through a 1.5-meter-long coil pipe to continue the reaction, and the reacted mixture flowed into a beaker to continue stirring. The mixture in the beaker was placed in a water bath for aging for 12 hours, and the temperature of the water bath was 50°C. After aging, it was filtered, and the obtained solid w...
Embodiment 2
[0034] Weigh InCl 3 ‧4H 2 O and SnCl 4 ‧5H 2 O crystals, dissolved in deionized water to obtain indium tin aqueous solution, in which, InCl 3 The concentration is 0.45mol / L, In:Sn=9:1. Prepare an ammonia solution with a concentration of 4 mol / L. At room temperature, use a microporous membrane to mix and react the indium tin solution and the ammonia solution. The ammonia solution is the dispersed phase, and the indium tin solution is the continuous phase. The continuous phase is continuously sheared. The dispersed phase realizes rapid mixing of the two phases, and carries out co-precipitation reaction, continuous phase: dispersed phase = 3:1. The mixture was passed through a 1.5-meter-long coil to continue the reaction, and the reacted mixture flowed into a beaker to continue stirring. The mixture in the beaker was placed in a water bath for aging for 12 hours, and the temperature of the water bath was 50°C. After aging, it was filtered, and the obtained solid was washed ...
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