作　　者： ; ;

机构地区： 华南理工大学化学与化工学院

出　　处： 《高等学校化学学报》 2013年第12期2681-2685,共5页

摘　　要： 本文将实验结果和软件模拟图像相结合,从结晶学角度探讨了通过L-半胱氨酸自组装单层诱导得到的不同形貌方解石晶体的成因.阐明了晶体的SEM照片与XRD谱峰的对应关系. One crystalline phase can exhibit different morphologies and growth orientations. Unit cell is the basic unit for the construction of crystals and the growth directions of the crystals are related to the macroscopic morphologies and properties of the crystals significantly. By combining the crystallography theory, experimen- tal results and software simulation, we discussed the mechanism for the formation of different morphologies of calcium carbonate crystals nucleated on the self-assembled monolayer of L-cysteine. SEM images and XRD data demonstrated that the calcites from the（001 ） crystallographic plane are dominated. The structural match between the organic surface[ the （4- x 4-）R30 structure] and that of the（001 ） crystal plane of calcite may account for the nucleation from these two planes.

关 键 词： 方解石 形貌 结晶取向 半胱氨酸 自组装单层

领　　域： [理学] [理学]