pH值对BaTiO_3纳米粉体性能的影响

Effect of pH Value on the Property of BaTiO_3 Nano Powder

本文研究了溶胶-凝胶过程中不同pH值条件下制得钛酸钡纳米粉的性能，从双电层理论及反应机理分析讨论了pH值对胶体的形成及团聚状态的影响，得到了反应的优化条件（溶液的pH值应控制在8以上），制得粒径小、颗粒分布均匀、少团聚的BaTiO3纳米粉体．

The property of BaTiO3 nano powder prepared by the sol-gel method at different pH values was investigated.The effect of pH value on gel formation and aggregates was discussed with double electric layer theory and reaction mechanism.The optimal preparing condition of the powder was proposed (pH>8).