Aqueous sol-gel synthesis of zirconium titanate (ZrTiO4) nanoparticles using chloride precursors

作者：Salahinejad E; Hadianfard M J; Macdonald D D; Karimi I; Vashaee D; Tayebi L^*

来源：Ceramics International, 2012, 38(8): 6145-6149.

DOI：10.1016/j.ceramint.2012.04.064

• Sol-gel processes
• X-ray methods
• Thermal properties

Zirconium titanate powders were synthesized by a straightforward sol gel method using zirconium and titanium chlorides as metal precursors, deionized water as solvent and oxygen donor, and a NaOH solution for adjusting pH to 7. According to transmission electron microscopy, amorphous particles of nearly 5 nm in size with a relatively spherical morphology were prepared. Thermogravimetry and differential scanning calorimetery analyses on the xerogel at a heating rate of 10 degrees C/min indicated a crystallization temperature of 690 degrees C, which is comparable with previous reports. Furthermore, via differential scanning calorimetery studies using the Kissinger%26apos;s equation, the activation energy for ZrTiO4 crystallization was determined to be 850 kJ/mol. Structural evaluations in the isothermal regime, using X-ray diffraction experiments, implied the onset of ZrTiO4 crystallization at 550 degrees C.

• 出版日期2012-12
• 单位中国石油大学（北京）