超纯水对溶剂合成纳米TiO_2粒径的调控及其表征

Ultrapure water leading adjust for size of solvothermal synthesized nano-TiO_2 particle and characterization

以钛酸四丁酯和甘氨酸为钛源和模板剂,研究超纯水的添加量对溶剂热法合成纳米TiO2粒径的影响,来调控纳米TiO2粒径.并通过SEM、EDS、XRD、FT-IR以及N2吸附-脱附实验对产物进行了形貌、结构及成分的表征.结果表明,SEM表征表明超纯水的添加量对TiO2纳米粒子粒径形成有较大影响,当超纯水的添加量为3.5mL时,制备的纳米TiO2最小粒径小于10nm;EDS表征表明其Ti∶O原子百分比为1∶1.89;XRD表征表明其为锐钛矿型单晶;FT-IR表征表明其含有典型的Ti-O键,且比表面积及孔径分析表明其比表面积和平均孔径分别为109.444m2/g和37.087nm.研究结果证明,通过调节超纯水的添加量可以有效控制TiO2纳米粒子的粒径.

Ultrapure water and its amount were studied to figure out the impact on solvothermal and biomimetic synthesized TiO2nanoparticle size with tetrabutyl titanate as titanium source and glycine as template respectively while regulating nano size. SEM, EDS, XRD, FT-IR and N2 adsorption-desorption ex- periments were used to get the data of morphology, structure and composition of as-prepared nano-TiO2. SEM characterization showed that the amount of ultrapure water had a significant impact on the forma- tion of nano-TiO2 particle size. While the ultrapure water dosage was 3.5 mL, smailest particle size of the prepared nano-TiO2 was less than 10 nm.＇EDS characterization demonstrated that the ratio of Ti and O of the as-prepared nano TiO2 atomic was 1 ： 1.89. XRD analysis identified it as an anatase-type monocrys- talline. FT-IR characterization indicated that it contained a typical Ti-O bond,and the specific surface area and pore size analysis revealed that the specific surface area and average pore size of 109. 444 m^2/g and 37. 087 nm. Results indicated that the size of TiO2 nanoparticles can be effectively controlled by adjusting the amount of ultrapure water.