李金川,邱悦,花儿

• 1:北方民族大学化学与化学工程学院
• 2:国家民委化工技术基础重点实验室
• 3:宁夏太阳能化学转化技术重点实验室

摘要(Abstract)：

由Ca(OH)_2和烷基(=丁、己、辛、癸、月桂)酰基丙氨酸配位体，合成一系列酰基丙氨酸型Ca(Ⅱ)配合物。其甲醇/水溶液中通入CO_2，制备CaCO_3纳米粒子。透射及扫描电镜的测定结果显示，CaCO_3纳米粒子的形貌为球状或棒状，并且随着Ca(Ⅱ)配合物中配位体烷基侧链的增长(C4→C12),CaCO_3纳米粒子的粒径(64 nm→10 nm)呈显著减小趋势，这可能是因为饱和浓度Ca(Ⅱ)配合物在甲醇或含少量水甲醇溶液中形成分子聚集体并其极性头部靠拢于中心，且随着配位体烷基链的增长，配合物分子侧链之间的疏水作用增强，从而使得分子聚集体极性头部变小。因此，通过调整Ca(Ⅱ)配合物的配位体的烷基侧链的大小及长短，可以制备出形貌各异、粒径大小不同的CaCO_3纳米粒子。本研究中CaCO_3纳米粒子的制备原料为氨基酸的衍生物，绿色环保、原料易得且制备工艺简单易行。研究结论为纳米级碳酸钙的绿色制备工艺提供了新的思路，纳米级碳酸钙作为一种具有优异性能的新型材料，在科学研究和工业应用中具有广泛的前景。

关键词(KeyWords)： 酰基丙氨酸;Ca(Ⅱ)配合物;CaCO_3纳米粒子;透射电镜;扫描电镜

Abstract:

Keywords:

基金项目(Foundation): 北方民族大学科技类重点项目（2023ZRLG23）

作者(Author): 李金川,邱悦,花儿

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