室温仿生合成羟基锡酸锌微球及其表征

主要以七水硫酸锌和三水锡酸钠为原料，以氨水为软模板，用β-环糊精作为有机调控基质，在室温条件下成功制备了羟基锡酸锌微球。对 β-环糊精的用量、反应物物质的量比、反应物浓度等条件对产物形貌的影响进行了探讨。确定羟基锡酸锌最佳合成条件为：β-环糊精的用量为9 g/L；锌离子和锡酸根离子的物质的量比为2∶3；反应物浓度为0.3 mol/L。采用XRD、SEM及TG-DTA对样品进行了表征和分析，并对羟基锡酸锌微球的形成机理做了初步探讨。

Biomimetic synthesis and characterization of zinc hydroxystannate microspheres at room temperature

Using ZnSO4·7H2O and Na2SnO3·3H2O as raw materials，ammonia as soft templates，and β-cyclodextrin（CD） controlling the morphology，zinc hydroxystannate［ZnSn（OH）6］microspheres were prepared at room temperature.The effects of the dosage of β-CD，the amount-of-substance ratio of the reactants，and the reactant concentration etc.on the product′s morphology were discussed.The optimum reaction conditions were as follows: the dosage of β-CD was 9 g/L，the amount-of-substance ratio of the reactants was n（Zn2+）∶n（SnO32-）=2∶3，and the reactant concentration was 0.3 mol/L.The products prepared were characterized and analyzed by X-ray diffraction（XRD），scanning electron microscope（SEM），and thermal analysis（TG-DTA）. Moreover，the reaction mechanism was also investigated.