One-step facile synthesis of CaCO3 nanoparticles via mechano-chemical route

This research was aimed to synthesize calcium carbonate nanoparticles from CaCl2 and Na2CO3 precursors by mechano-chemical route without any subsequent heat treatment of the as-milled powder. The powder mixture was once milled in a planetary ball mill with NaCl as the diluting agent and another time with KCl. CaCO3 nanoparticles were achieved after 10 min of continuous milling in the planetary ball mill. CaCO3 nanoparticles were also fully formed after 10 min of continuous milling by using an attrition mill. The resulting powders milled via both milling methods were analyzed to investigate the effect of the diluting agent and milling method on particle size of CaCO3. BET results calculated the specific surface area of CaCO3 nanoparticles to be 19.27 m2 g− 1. Furthermore, TEM results substantiated the fact that particle size ranges from 60 to 90 nm.

Nano size particles of single phase CaCO3 with a particle size ranging from 60 to 90 nm have been synthesized by Mechano-chemical route. It only takes one facile step without any subsequent heat treatment of the as-milled powder.Figure optionsDownload as PowerPoint slideHighlights
► Single phase CaCO3 was synthesized by a mechano-chemical route.
► The process takes one facile step without any subsequent heat treatment.
► The size of CaCO3 nano particles ranged from 60 to 90 nm.