Abstract
We describe a simple and green method for synthesizing hollow calcium carbonate (CaCO3) microspheres composed of vaterite via the reaction of Ca(CH3COO)2 with NaHCO3 in the solvent mixture of ethylene glycol (EG) and H2O, without any templates. We show that the reaction rapidly conducts to the formation of microspheres with an average diameter of 800nm. XRD and FTIR analyses confirm that the hollow CaCO3 microspheres are the characteristic of the vaterite polymorph. SEM and TEM observations reveal that the microspheres have a hollow core of around 500nm width and are composed of vaterite with an average diameter of 80nm. A possible growth mechanism for the hollow structure has been proposed, which exhibits that the hollow CaCO3 microspheres are formed by an aggregation mechanism. This work may pave the way for the elaboration of a biomaterial with potential applications in therapy as well as drug delivery.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
