Preparation of nano-sized cerium and titanium pyrophosphates via solid-state reaction at room temperature

作     者：WU Wenwei FAN Yanjin WU Xuehang LIAO Sen HUANG Xiufu LI Xuanhai WU Wenwei, FAN Yanjin, WU Xuehang, LIAO Sen, HUANG Xiufu, and LI Xuanhai School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004,

作者机构：School of Chemistry and Chemical Engineering Guangxi University Nanning 530004 China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2009年第28卷第1期

页      面：33-38页

核心收录：

学科分类：080603[工学-有色金属冶金] 08[工学] 0806[工学-冶金工程] 

基　　金：supported by the Natural Sci-ence Foundation of Guangxi Province  China (No. 0640009) 

主　　题：cerium pyrophosphate titanium pyrophosphate solid-state reaction at room temperature UV absorbency stabilization 

摘      要：Nano-sized cerium-titanium pyrophosphates Ce1-xTixP2O7 （with x = 0, 0.2, 0.5, 0.7, 0.9, and 1.0） were obtained by grinding a mixture of Ce（SO4）2·4H2O, Ti（SO4）2, and Na4P2O7·10H2O in the presence of surfactant PEG-400 at room temperature, washing the mixture with water to remove soluble inorganic salts, and drying at 100℃. The products and their calcined samples were characterized using ultraviolet-visible spectroscopy （UV-vis）, thermogravimetry and differential thermal analyses （TG/DTA）, X-ray powder diffraction （XRD）, and transmission electron microscopy （TEM）. The results show that nano-sized Ce1-xTixP2O7 behave as an excellent UV-shielding material. Thereinto, the CeP2O7 has the most excellent UV-shielding effect, and the amorphous state of Ce0.8Ti0.2P2O7 can keep at a higher temperature than CeP2O7. Therefore, the stabilization of the amorphous state of the cerium pyrophosphates was carded out by doping titanium. This stabilization is a significant improvement, which enables to apply these amorphous pyrophosphates not only to cosmetics and paints, but also plastics and films.