Tian Congxue
Panzhihua University, Panzhihua, 617000, Sichuan, China.
Key Laboratory of Green Chemistry of Sichuan Institutes of Higher Education, Zigong, 643000, Sichuan, China.
Sci Rep. 2020 May 14;10(1):7999. doi: 10.1038/s41598-020-64976-4.
The structural factors such as crystal structure, particle size distribution and impurity content of hydrated TiO had great effects on the structures and pigment properties of the rutile TiO. The rutile TiO white pigment was prepared via the Short Sulfate Process from low concentration industrial TiOSO solution. In order to produce rutile TiO pigment with good structures and excellent pigment properties, the crystal size of the hydrated TiO should be controlled less than 8.9 nm and as close as possible to 7.9 nm, which could effectively promote the phase transformation and crystal growth of the rutile TiO. The appropriate particle size distribution of hydrated TiO had obvious effects on obtaining rutile TiO with narrower particle size distribution and near 0.20 µm. It was best to adjust the hydrolysis conditions to reduce the specific surface area of the hydrated TiO so as to reduce the iron ion impurity adsorption.
水合TiO的晶体结构、粒度分布和杂质含量等结构因素对金红石型TiO的结构和颜料性能有很大影响。采用短流程硫酸法从低浓度工业TiOSO溶液制备金红石型TiO白色颜料。为了制备具有良好结构和优异颜料性能的金红石型TiO颜料，水合TiO的晶体尺寸应控制在小于8.9nm且尽可能接近7.9nm，这可以有效促进金红石型TiO的相变和晶体生长。水合TiO合适的粒度分布对获得粒度分布较窄且接近0.20μm的金红石型TiO有明显影响。最好调整水解条件以降低水合TiO的比表面积，从而减少铁离子杂质吸附。
