摘要
采用低温直接沉淀法,以SrCl_2·6H_2O和TiCl_4为原料,NaOH为沉淀剂合成SrTiO_3粉体。研究了反应时间、反应温度、起始料液浓度,以及分散剂的加入对产物形貌、粒度、分散性的影响。通过对产物进行FTIR、SEM、XRD和粒度表征分析,得出最佳制备条件：当pH=13,温度75℃,时间4h,起始料液浓度（SrCl21.2mol/L、TiCl41.2mol/L）,反应体系加入分散剂PEG4000（0.5%）,可以制备出低团聚、平均粒度（50~70nm）的纳米级钛酸锶粉体。
Using low temperature direct precipitation method,using SrCl_2·6H_2O and TiCl_4 as raw materials,Na OH as the precipitation agent synthesis of SrTiO_3 powders. The effect of reaction time,reaction temperature,p H value,and the addition dispersant on the morphology,particle size and dispersion to product were investigated. Through FTIR,SEM,XRD and particle size of the product were analyzed,obtains the best preparation condition： when pH = 13,T = 75 ℃,t = 4 h,initial solution concentration（ SrCl2：1.2mol / L,TiCl_4： 1. 2 mol/L）,the reaction system was added dispersing agent PEG4000（ 0. 5%）,can be produced with low agglomeration,particle size（ 50 ~ 70 nm） nano strontium titanate powder.
出处
《应用化工》
CAS
CSCD
北大核心
2016年第4期687-690,695,共5页
Applied Chemical Industry
关键词
低温直接沉淀法
钛酸锶
纳米级
低团聚
direct precipitation at low temperature
strontium titanate
nanoscale
low agglomeration
