Abstract
AbstractThe influence of 1‐ethyl‐3‐methylimidazolium chloride, 1‐butyl‐3‐methylimidazolium chloride, 1‐butyl‐1‐methylpyrrolidinium chloride, 1‐ethyl‐3‐methylimidazolium tetrafluoroborate and 3‐(2‐hydroxyethyl)‐1‐methylimidazolium tetrafluoroborate ionic liquids (ILs) on the morphology and structure of CaCO3 has been investigated in an ethanolic medium by using calcium chloride and ammonium carbonate as the calcium and carbon sources, respectively. Syntheses were carried out at 9 °C and room temp. at different IL concentrations and CO32–/Ca2+ molar ratios. No polymorph selectivity was detected, and calcite was the sole crystalline form obtained under all the considered reactions conditions. In the case of the BF4–‐based ILs, anion decomposition occurred, which led to the formation of fluorite. Low temperature reduced the precipitation rate. With the ILs employed, the morphology of CaCO3 has been finely tailored: calcite microcubes, microframes and microboxes with potential application in drug delivery, as well as nanocubes and nanocorn‐like objects were produced with Cl–‐based ILs; with BF4–‐based ILs, hierarchically structured materials, in which calcite coexists with fluorite, and complex and intricate shapes were produced, such as nanostructured microspheres, nanostructured calla‐lily‐like and ice‐cream‐ball‐like micro‐objects.
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.
