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首页> 外文期刊>Materials Science and Engineering. B, Solid-State Materials for Advanced Technology >One-step synthesis of titanium oxide nanoparticles by spray pyrolysis of organic precursors
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One-step synthesis of titanium oxide nanoparticles by spray pyrolysis of organic precursors

机译：喷雾热解有机前驱体一步合成氧化钛纳米粒子

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摘要

Titanium oxide (titania) nanoparticles (with a nominal size of about 10nm) were synthesized directly from three organic precursors: titanium tetraisopropoxide (TTIP), and water-soluble titanium sources TC-300~® and TC-400~®, by using a low-pressure spray pyrolysis (LPSP) method. Effects of temperature, solvent, concentration and precursor type have been investigated systematically. We found that a higher temperature and a higher concentration were beneficial for the formation of nanoparticles. Addition of ethanol as a co-solvent improved breakup of droplets, and subsequently formation of nanoparticles. Water-soluble titanium sources showed great potentials for preparation of titania nanoparticles. The nominal size of nanoparticles calculated from electron microscopical images agreed well with that estimated from corresponding X-ray diffraction patterns, implying that nanoparticles were single crystals. The possible mechanism of particle formation in the LPSP process is also provided.
机译：氧化钛（titania）纳米粒子（标称尺寸约为10nm）是使用三种有机前体直接合成的：四异丙氧基钛（TTIP）和水溶性钛源TC-300〜和TC-400〜。低压喷雾热解（LPSP）方法。温度，溶剂，浓度和前体类型的影响已得到系统地研究。我们发现较高的温度和较高的浓度有利于纳米颗粒的形成。加入乙醇作为助溶剂可改善液滴的破碎，并随后形成纳米颗粒。水溶性钛源显示出制备二氧化钛纳米颗粒的巨大潜力。由电子显微镜图像计算得到的纳米颗粒的标称尺寸与由相应的X射线衍射图估算出的标称尺寸非常吻合，这表明纳米颗粒是单晶。还提供了LPSP工艺中颗粒形成的可能机理。

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