金模板诱导文石型碳酸钙晶体生长的研究

本文以仿生物矿化的方法研究了金片作为模板对碳酸钙晶体形貌和晶型的控制作用,采用扫描电镜（SEM）和X-射线粉末衍射（XRD）对晶体进行形貌观察和晶型分析,结果显示当以金片为模板诱导碳酸钙晶体生长时,能制备出结晶度好、文石相含量高的针状碳酸钙。同时结合金片结构性质和碳酸钙晶体的XRD数据,分析了金片诱导晶体生长的机理,分析结果表明晶格立体匹配和金片的疏水特性是控制碳酸钙晶体生长的重要因素。

Nucleation and Growth of Calcium Carbonate with Controllable Aragonite Polymorph on Au Template

In this work,calcium carbonate crystals were induced by using the method of biomimetic mineralization and Au substrate as the template.The morpho logy and polymorph of calcium carbonatecrystal were studied.The crystals were characterized by Scanning Electron Microscope（SEM） and X-Ray Diffraction（XRD）.The results showed that the crystals were mainly aragonite with uniform size.Based on the structure of the Au template and XRD results,it can conclude the match between the crystal face and the definite structure of the Au template play great role in the controlling the crystal growth.At the same time,the hydrophobicity of the Au template also can affect the crystal growth.