title: Seeded Growth Route to Noble Calcium Carbonate Nanocrystal.
abstract: A solution-phase route has been considered as the most promising route to synthesize noble nanostructures. A majority of their synthesis approaches of calcium carbonate (CaCO3) are based on either using fungi or the CO2 bubbling methods. Here, we approached the preparation of nano-precipitated calcium carbonate single crystal from salmacis sphaeroides in the presence of zwitterionic or cationic biosurfactants without external source of CO2. The calcium carbonate crystals were rhombohedron structure and regularly shaped with side dimension ranging from 33-41 nm. The high degree of morphological control of CaCO3 nanocrystals suggested that surfactants are capable of strongly interacting with the CaCO3 surface and control the nucleation and growth direction of calcium carbonate nanocrystals. Finally, the mechanism of formation of nanocrystals in light of proposed routes was also discussed.
authors.affiliation: Catalysis and Science Research Center, Faculty of Science, University Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia.|Department of Chemistry, Faculty of Science, University Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia.
authors.forename: Aminul
authors.initials: A
authors.lastname: Islam
authors.affiliation: Catalysis and Science Research Center, Faculty of Science, University Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia.|Department of Chemistry, Faculty of Science, University Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia.
authors.forename: Siow Hwa
authors.initials: SH
authors.lastname: Teo
authors.affiliation: Laboratory of Marine Biotechnology, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
authors.forename: M Aminur
authors.initials: MA
authors.lastname: Rahman
authors.affiliation: Catalysis and Science Research Center, Faculty of Science, University Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia.|Department of Chemistry, Faculty of Science, University Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia.
authors.forename: Yun Hin
authors.initials: YH
authors.lastname: Taufiq-Yap
mesh_terms: D000818:Animals; D002119:Calcium Carbonate / Q000737:chemistry*; D003460:Crystallization; D008855:Microscopy, Electron, Scanning; D053758:Nanoparticles / Q000737:chemistry*; D012617:Sea Urchins / Q000737:chemistry*; D013501:Surface-Active Agents / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D013501:Surface-Active Agents; D002119:Calcium Carbonate