Synthesis of hierarchical calcium carbonate particles

2018-11-01
Oral, Cağatay Mert
Kapusuz, Derya
Ercan, Batur
Recently, synthesis of hierarchically structured porous materials gained particular interest for various industrial applications. As a biocompatible and chemically stable material, hierarchical CaCO3 structures formed by ordered aggregation and growth of nanocrystals offer significant advantages for structural and biomedical use compared to their currently-used alternatives. During solution processing, incorporating doping agents to calcium positions or altering CaCO3 supersaturation, new crystals can heterogeneously nucleate on previously formed nuclei, leading to particle growth in a hierarchical manner. In this study, hierarchical CaCO3 microparticles were synthesized at temperatures below 100 °C by an additive-modified precipitation approach. The morphology and crystal structure of the CaCO3 particles were determined by electron microscopy (SEM and TEM) and X-ray diffraction (XRD). By varying additive content and temperature, morphologies including hollow microspheres, crab-like and flower-like particles were successfully obtained.

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Citation Formats
C. M. Oral, D. Kapusuz, and B. Ercan, “Synthesis of hierarchical calcium carbonate particles,” presented at the 19. Uluslararası Metalurji ve Malzeme Kongresi, 2018, Istanbul, Turkey, 2018, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/78850.