title: Synthesis of calcium carbonate using extract components of croaker gill as morphology and polymorph adjust control agent.
abstract: Biomimetic synthesis of calcium carbonate with various polymorphs, sizes and morphologies by using organic substrates has become an interesting topic for the last years. Calcium carbonate has been synthesized by the reaction of Na2CO3 and CaCl2 in the presence of extract components of croaker gill. The products were characterized by powder X-ray diffraction (PXRD) and Fourier transform infrared (FT-IR) spectrum, and particle morphologies were observed by scanning electron microscope (SEM). The results show that at lower concentration yellow croaker gill extract has no effect on calcium carbonate crystal polymorph. Calcite was obtained only. But the morphologies of calcite particle change with the increase of the concentration. The corners of the particle change from angular to curved. However, with the further increase of the concentration of yellow croaker gill extract, the calcium carbonate obtained is a mixture of calcite and vaterite. The vaterite component in the mixture rises with increasing concentration of extract solution, indicating that the proteins from the yellow croaker gill during growth play a crucial role in stabilizing and directing the crystal growth.
authors.affiliation: College of Material & Chemical Engineering, Chuzhou University, Feng Le Road 1528, Chuzhou 239000, China.
authors.forename: Hao
authors.initials: H
authors.lastname: Chen
authors.affiliation: College of Material & Chemical Engineering, Chuzhou University, Feng Le Road 1528, Chuzhou 239000, China.
authors.forename: Chengsong
authors.initials: C
authors.lastname: Qing
authors.affiliation: College of Material & Chemical Engineering, Chuzhou University, Feng Le Road 1528, Chuzhou 239000, China.
authors.forename: Jiaoling
authors.initials: J
authors.lastname: Zheng
authors.affiliation: College of Material & Chemical Engineering, Chuzhou University, Feng Le Road 1528, Chuzhou 239000, China.
authors.forename: Yuxi
authors.initials: Y
authors.lastname: Liu
authors.affiliation: College of Material & Chemical Engineering, Chuzhou University, Feng Le Road 1528, Chuzhou 239000, China. Electronic address: wugangczu@163.com.
authors.forename: Gang
authors.initials: G
authors.lastname: Wu
mesh_terms: D000818:Animals; D002119:Calcium Carbonate / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology; D003460:Crystallization; D005880:Gills / Q000187:drug effects / Q000378:metabolism / Q000473:pathology*; D008855:Microscopy, Electron, Scanning; D010473:Perciformes / Q000254:growth & development*; D017550:Spectroscopy, Fourier Transform Infrared; D014961:X-Ray Diffraction
chemical_list: D002119:Calcium Carbonate
keywords: Calcite; Calcium carbonate; Morphology; Polymorph; Vaterite; Yellow croaker gill extract