Abstract
A nonclassical multistep pathway involving bottom-up and break-down stages for the evolution of calcite nanograins ∼50 nm in size was demonstrated in a basic aqueous system. Calcite nanofibrils ∼10 nm wide were produced as the initial crystalline phase via amorphous calcium carbonate through ion-by-ion assembly by the carbonation of Ca(OH) 2 at a high pH of ∼13. Bundles ∼50 nm in diameter were then formed by the subsequent oriented attachment of the nanofibrils. Monodispersed calcite nanograins were finally obtained through spontaneous fragmentation of the fibrous forms via a decrease in pH by further carbonation.
Original language | English |
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Pages (from-to) | 8997-9001 |
Number of pages | 5 |
Journal | ACS Omega |
Volume | 2 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2017 |
ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)