Co-doped nanometer zinc oxide powder body and preparation method thereof

Abstract

The invention discloses a co-doped nanometer zinc oxide powder body and a preparation method thereof. The co-coped elements include a first metal element and a second metal element, wherein the first metal element is titanium, and the second metal element is aluminum, gallium, indium or tin; by total amount of substance, the sum of the first metal element, the second metal element and zinc in zinc oxide is 100 parts, wherein the sum of the first metal element and the second metal element accounts for 0.005-30 parts, and the scope of the part ratio of the first metal element and the second metal element is 1:100 to 100:1. Compared with the prior art, the method has accurately controllable reaction conditions, and the applied device is simple, has low cost, can control pollution conveniently, and is suitable for large-scale industrial production; and the doping uniformity of the obtained co-doped zinc oxide powder body is high, the powder body particles are uniform and in approximate ball shape, and have higher sintering activity, and the single phase property of the nanometer powder body is realized on the premise of high content of doped elements.

Description

technical field

[0001] The invention belongs to the field of inorganic nanometer materials, in particular to co-doped nanometer zinc oxide powder and a preparation method. Background technique

[0002] Transparent Conductive Oxide (TCO) is a wide bandgap semiconductor material with high free carrier concentration, and its free carriers come from material defects or external doping. CdO was the first TCO material invented, followed by SnO 2 and In 2 o 3 The research work of transparent conductive film based on transparent conductive film is technically mature and enters the market, and gradually becomes the mainstream TCO material and is widely used. Since the 1980s, research on zinc oxide (ZnO)-based TCO thin films has gradually emerged. The mainstream TCO material in the market is Indium Tin Oxide (ITO). However, because indium in ITO is a rare metal with limited reserves, and because the market demand for TCO materials has risen sharply, ZnO-based TCO materials have be...

Examples

Embodiment 1

[0027] Add titanium tetrachloride dropwise to deionized water at 5°C to make a 1mol / L solution; dissolve zinc nitrate and aluminum nitrate in deionized water at room temperature to make a 1mol / L aqueous solution, wherein the molar ratio between aluminum ions and zinc ions The ratio is 9:73; the above two solutions are mixed and an appropriate amount of deionized water is added to form a salt solution with an ion concentration of 0.5mol / L, wherein the molar ratio between titanium ions, aluminum ions, and zinc ions is 18: 9: 73; under stirring at 400 rev / min, the above-mentioned salt solution was added dropwise to the reaction vessel pre-installed with deionized water through different dropping channels at a rate of 50mL / min and 1mol / L ammonia solution, During the dropping process, adjust the dropping rate of the ammonia solution so that the pH value of the solution in the reaction vessel is kept between 7.0 and 7.2, and the solution temperature is 25°C to obtain a co-precipitate...

Embodiment 2

[0030] Add titanium tetrachloride dropwise to deionized water at 0°C to make a 3mol / L solution; dissolve zinc nitrate and aluminum nitrate in deionized water at room temperature to make a 3mol / L aqueous solution, in which the molar ratio between aluminum ions and zinc ions The ratio is 1:44; mix the above two solutions and add an appropriate amount of deionized water to form a salt solution with an ion concentration of 1mol / L, wherein the molar ratio between titanium ions, aluminum ions, and zinc ions is 10:2:88 ; Under stirring at 500 rpm, the above-mentioned salt solution is added dropwise to the reaction vessel pre-installed with deionized water at a rate of 30mL / min and the ammonia solution of 3mol / L through different dropping channels. Adjust the drop rate of the ammonia solution in the middle to keep the pH value of the solution in the reaction vessel between 8.0 and 8.2, and the solution temperature is 30°C to obtain the coprecipitated product; after aging the precipitat...

Embodiment 3

[0033] Add titanium tetrachloride dropwise to deionized water at 0°C to make a 5mol / L solution; dissolve zinc nitrate and aluminum nitrate in deionized water at room temperature to make a 6mol / L aqueous solution, in which the molar ratio between aluminum ions and zinc ions The ratio is 9:82; the above two solutions are mixed and an appropriate amount of deionized water is added to form a salt solution with an ion concentration of 2mol / L, wherein the molar ratio between titanium ions, aluminum ions, and zinc ions is 9:9 : 82; under the stirring of 600 revs / min, with the ammonia solution of above-mentioned salt solution with the speed of 40mL / min and 3mol / L through different drop-adding passages simultaneously dropwise in the reaction container that deionized water is housed in advance, drop During the addition process, adjust the dripping rate of the ammonia solution to keep the pH value of the solution in the reaction vessel between 7.5 and 7.7, and the solution temperature is ...

technical field

[0001] The invention belongs to the field of inorganic nanometer materials, in particular to co-doped nanometer zinc oxide powder and a preparation method. Background technique

[0002] Transparent Conductive Oxide (TCO) is a wide bandgap semiconductor material with high free carrier concentration, and its free carriers come from material defects or external doping. CdO was the first TCO material invented, followed by SnO 2 and In 2 o 3 The research work of transparent conductive film based on transparent conductive film is technically mature and enters the market, and gradually becomes the mainstream TCO material and is widely used. Since the 1980s, research on zinc oxide (ZnO)-based TCO thin films has gradually emerged. The mainstream TCO material in the market is Indium Tin Oxide (ITO). However, because indium in ITO is a rare metal with limited reserves, and because the market demand for TCO materials has risen sharply, ZnO-based TCO materials have be...

Examples

Embodiment 1

[0027] Add titanium tetrachloride dropwise to deionized water at 5°C to make a 1mol / L solution; dissolve zinc nitrate and aluminum nitrate in deionized water at room temperature to make a 1mol / L aqueous solution, wherein the molar ratio between aluminum ions and zinc ions The ratio is 9:73; the above two solutions are mixed and an appropriate amount of deionized water is added to form a salt solution with an ion concentration of 0.5mol / L, wherein the molar ratio between titanium ions, aluminum ions, and zinc ions is 18: 9: 73; under stirring at 400 rev / min, the above-mentioned salt solution was added dropwise to the reaction vessel pre-installed with deionized water through different dropping channels at a rate of 50mL / min and 1mol / L ammonia solution, During the dropping process, adjust the dropping rate of the ammonia solution so that the pH value of the solution in the reaction vessel is kept between 7.0 and 7.2, and the solution temperature is 25°C to obtain a co-precipitate...

Embodiment 2

[0030] Add titanium tetrachloride dropwise to deionized water at 0°C to make a 3mol / L solution; dissolve zinc nitrate and aluminum nitrate in deionized water at room temperature to make a 3mol / L aqueous solution, in which the molar ratio between aluminum ions and zinc ions The ratio is 1:44; mix the above two solutions and add an appropriate amount of deionized water to form a salt solution with an ion concentration of 1mol / L, wherein the molar ratio between titanium ions, aluminum ions, and zinc ions is 10:2:88 ; Under stirring at 500 rpm, the above-mentioned salt solution is added dropwise to the reaction vessel pre-installed with deionized water at a rate of 30mL / min and the ammonia solution of 3mol / L through different dropping channels. Adjust the drop rate of the ammonia solution in the middle to keep the pH value of the solution in the reaction vessel between 8.0 and 8.2, and the solution temperature is 30°C to obtain the coprecipitated product; after aging the precipitat...

Embodiment 3

[0033] Add titanium tetrachloride dropwise to deionized water at 0°C to make a 5mol / L solution; dissolve zinc nitrate and aluminum nitrate in deionized water at room temperature to make a 6mol / L aqueous solution, in which the molar ratio between aluminum ions and zinc ions The ratio is 9:82; the above two solutions are mixed and an appropriate amount of deionized water is added to form a salt solution with an ion concentration of 2mol / L, wherein the molar ratio between titanium ions, aluminum ions, and zinc ions is 9:9 : 82; under the stirring of 600 revs / min, with the ammonia solution of above-mentioned salt solution with the speed of 40mL / min and 3mol / L through different drop-adding passages simultaneously dropwise in the reaction container that deionized water is housed in advance, drop During the addition process, adjust the dripping rate of the ammonia solution to keep the pH value of the solution in the reaction vessel between 7.5 and 7.7, and the solution temperature is ...

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