A kind of nano-indium oxide and preparation method thereof
A technology of nano-indium oxide and indium salt, which is applied in the field of nano-materials, can solve problems such as poor crystallinity, failure to meet size requirements, and influence on the density and flatness of ITO targets, and achieve simple, controllable, and easy preparation processes. The effect of the operation
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[0049] The invention provides a method for preparing nano-indium oxide, comprising the following steps:
[0050] (1) mixing water-soluble indium salt, sodium acetate and water to obtain a mixed solution;
[0051] (2) adjusting the pH value of the mixed solution obtained in the step (1) to 3.7 to 8, and performing a hydrothermal reaction to obtain a nano-indium oxide precursor;
[0052] (3) Calcining the nano-indium oxide precursor obtained in the step (2) to obtain nano-indium oxide.
[0053] The invention mixes water-soluble indium salt, sodium acetate and water to obtain a mixed solution. In the present invention, the molar ratio of the water-soluble indium salt to sodium acetate is preferably 1:3-5, more preferably 1:4. In the present invention, the concentration of the water-soluble indium salt in the mixed solution is preferably 0.02-1 g / mL, more preferably 0.03-0.05 g / mL. In the present invention, the water-soluble indium salt preferably includes silver nitrate and / or...
Embodiment 1
[0063] Weigh 2g In(NO 3 ) 3 Dissolved in deionized water, 800rmb magnetic stirring for 10min to make In(NO 3 ) 3 Dissolve completely, then weigh 2.182g of NaAc and dissolve it in In(NO 3 ) 3 In the aqueous solution, continue magnetic stirring at 800rmb for 10min, until the NaAc is completely dissolved to form a colorless transparent solution, measure the pH of the solution to 4.20, adjust the solution to pH 8 with 2M NaOH solution.
[0064] A certain amount of mixed solution was transferred to a polytetrafluoroethylene-lined reactor with a filling capacity of 20%, and reacted at 180° C. for 6 hours. After the reaction, the reactor was naturally cooled to room temperature. The mixed solution after the reaction was taken out and centrifuged at 5000rpm for 5min, and the obtained solid powder was alternately washed six times with ultrapure water and absolute ethanol, and the finally obtained powder was dried in a vacuum oven at 65°C for 24h to obtain nano In 2 o 3 Precursor ...
Embodiment 2
[0069] Weigh 2g In(NO 3 ) 3 Dissolved in deionized water, 800rmb magnetic stirring for 20min to make In(NO 3 ) 3 Dissolve completely, then weigh 2.182g of NaAc and dissolve it in In(NO 3 ) 3 In the aqueous solution, continue magnetic stirring at 800rmb for 20min, until the NaAc is completely dissolved to form a colorless transparent solution, measure the pH of the solution to 4.20, adjust the solution to pH 8 with 2M NaOH solution.
[0070] A certain amount of mixed solution was transferred to a polytetrafluoroethylene-lined reactor with a filling capacity of 20%, and reacted at 180° C. for 6 hours. After the reaction, the reactor was naturally cooled to room temperature. The mixed solution after the reaction was taken out and centrifuged at 9000rpm for 5min. The obtained solid powder was alternately washed six times with ultrapure water and absolute ethanol, and the finally obtained powder was dried in a vacuum oven at 65°C for 24h.
[0071] The dried solid was ground in...
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