配位体修饰氟化锶纳米分层微球的可控合成

Controllable Synthesis of Ligand Modified SrF_2 Hierarchical Microspheres

以硝酸锶为锶源,氟化钠为氟源,乙二胺四乙酸二钠(EDTANa2)为配位体,经微波促进合成了配位体修饰氟化锶纳米分层微球(1),其结构和形貌经XRD和SEM表征。物料比r[n(EDTANa2)∶n(Sr2+)]和反应温度(t)对1rt形貌影响较大。结果表明,在最佳反应条件[n(Sr2+)5 mmol,r=7,于120℃/600 W反应]下合成的17120分层清晰,分散性好,球体均匀,直径600 nm^800 nm。

Ligand modified SrF2 hierarchical microspheres （1） were synthesized by microwave-assis- ted method, using St（ NO3 ） 2 as the Sr source, NaF as the F source and EDTANa2 as the ligand. The structures and morphology were characterized by XRD and SEM. Mole ratio（r） and reaction tempera- ture（t） exhibited important effects on the microstructure of 1rt. The results showed that the optimum reaction conditions of 1rt were as follows： n（Sr2＋） was 5 retool, n（ EDTANa2 ）, ： n（Sr2＋ ） =7 at 120 ℃/600 W. 1-20 were in good dispersity and hierarchy. The diameter were 600 nm - 800 nm.