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首页> 外文期刊>Journal of Materials Research >Fabrication Of Well-dispersed Barium Titanate Nanoparticles By The Electrospray Of A Colloidal Solution
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Fabrication Of Well-dispersed Barium Titanate Nanoparticles By The Electrospray Of A Colloidal Solution

机译：电喷雾胶体溶液制备分散良好的钛酸钡纳米粒子

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摘要

The electrospray of a colloidal microemulsion (ME) solution and subsequent on-line annealing were used to produce barium titanate nanoparticles (BTO-NPs). The solvent of the ME solution (cyclohexane) was replaced with a high-conductivity solution (solute: ammonium acetate, solvent: tetrahydrofurfuryl alcohol, conductivity: 3.1 × 10~2 S/m) to generate ultrafine droplets during the electrospraying. Well-dispersed and well-crystallized BTO-NPs with a perovskite structure were successfully fabricated at an annealing temperature of 1173 K. The size distribution of the BTO-NPs was successfully measured by applying a differential mobility analyzer and condensation nucleation counter to nanoparticles in-flight. The average size of the BTO-NPs was controlled within a range of 15 to 25 nm by changing the feeding rate. The electrospray of an ME solution with lower conductivity (solvent: 1-octanol, conductivity: 7.0 × 10~(-4) S/m) yielded amorphous particles with larger particle sizes. Thus, the electrospray of a high-conductivity solution is required to fabricate well-crystallized and dense BTO-NPs with smaller particle sizes.
机译：胶态微乳液（ME）溶液的​​电喷雾和随后的在线退火用于生产钛酸钡纳米粒子（BTO-NP）。用电导率高的溶液（溶质：醋酸铵，溶剂：四氢糠醇，电导率：3.1×10〜2 S / m）代替ME溶液（环己烷）的溶剂，生成超微滴。在1173 K的退火温度下成功制备了具有钙钛矿结构的分散良好且结晶良好的BTO-NP。通过使用差动迁移率分析仪和缩合成核计数器对纳米粒子进行了成功的测量，从而成功测量了BTO-NP的尺寸分布。飞行。通过改变进料速度，将BTO-NP的平均尺寸控制在15至25nm的范围内。电导率较低的ME溶液（溶剂：1-辛醇，电导率：7.0×10〜（-4）S / m）的电喷雾产生的无定形颗粒具有较大的粒径。因此，需要电导率高的溶液来制造具有较小粒径的良好结晶的致密BTO-NP。

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