含羧基有机化合物控制锐钛矿型纳米二氧化钛生长的研究

Size-controlled Synthesis of Anatase TiO2 Nanoparticles by Carboxylic Acid Group-containing Organics

以偏钛酸为起始反应物，羧酸为修饰剂，进行了纳米锐钛矿型二氧化钛的合成研究。有机修饰剂的化学结构对制得的纳米二氧化钛颗粒的平均粒径及粒径分布影响很大。含非极性基团的羧酸有利于生成平均粒径小及粒径分布窄的锐钛矿型纳米二氧化钛。

Size-controlled synthesis of anatase TiO2 nanoparticles is carried out by using metatitanic acid as a starting material and carboxyllc acid group-containing organics as modifiers, The average particle size and particle size distribution of the resulting anatase TiO2 nanoparticles are significantly affected by the chemical structures of the organic modifiers. The presence of nonpolar group-containing carboxylic acids is beneficial to formation of small-sized and narrow size-distributed anatase TiO2 nanoparticles.