【摘要】 以硫酸钛为原料,尿素为均一沉淀剂,制备出单分散的二氧化钛微米球形颗粒,研究不同反应物浓度和溶剂对二氧化钛形貌的影响。结果表明,制备出二氧化钛微米球形粒子的最佳实验条件为:硫酸钛的浓度为0.2mol·L-1,尿素的浓度是2mol·L-1,表面活性剂(DBS)的浓度是0.005～0.01mol·L-1,溶剂为丙酮或乙醇。更多还原

【Abstract】 Monodispersed titania spheres were prepared from Ti(SO4)2 with u re a as precipitator. The effects of different reactant concentrations on the mor phology of titania particles were studied. The results show that the optimal syn thesis conditions for preparation of the titania spheres are as follows:the conc entrations of Ti(SO4)2,urea and DBS are 0.2 mol· L- 1, 2 mol· L- 1 and 0.005 ～ 0.01 mol· L- 1 respectively;the reactive solvent is acetone or ethanol.更多还原