Synthesis of calcium oxalate assembly structure and conversion

The conversion from one assembly structure to other composite assembly structures is valuable to both theoretical research and actual application in the nano/ micromaterials science. In this paper, firstly, the flower-like calcium oxalate assembly structure was synthesized using a supramolecule template; then, through a facile process, the calcium oxalate was converted to a sphere-cluster-like core/ shell CaC2O4/ CaWO4 nanocomposite assembly structure. The converted product remained the basic structure of original product, and possessed some new optical properties such as fluorescence, etc.