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Kim, Yi-Yeoun ; Schenk, Anna ; Ihli, Johannes ; Kulak, Alexander N. ; Hetherington, Nicola B. J. ; Tang, Chiu C. ; Schmahl, Wolfgang W. ; Griesshaber, Erika ; Hyett, Geoffrey ; Meldrum, Fiona C.:
A critical analysis of calcium carbonate mesocrystals.
In: Nature Communications.
Bd. 5
(2014)
.
- No. 4341.
ISSN 2041-1723
DOI: https://doi.org/10.1038/ncomms5341
Abstract
The term mesocrystal has been widely used to describe crystals that form by oriented assembly, and that exhibit nanoparticle substructures. Using calcite crystals co-precipitated with polymers as a suitable test case, this article looks critically at the concept of mesocrystals. Here we demonstrate that the data commonly used to assign mesocrystal structure may be frequently misinterpreted, and that these calcite/polymer crystals do not have nanoparticle substructures. Although morphologies suggest the presence of nanoparticles, these are only present on the crystal surface. High surface areas are only recorded for crystals freshly removed from solution and are again attributed to a thin shell of nanoparticles on a solid calcite core. Line broadening in powder X-ray diffraction spectra is due to lattice strain only, precluding the existence of a nanoparticle sub-structure. Finally, study of the formation mechanism provides no evidence for crystalline precursor particles. A re-evaluation of existing literature on some mesocrystals may therefore be required.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Institutionen der Universität: | Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Juniorprofessur Kolloidale Systeme > Juniorprofessur Kolloidale Systeme - Juniorprof. Dr. Anna Schenk Fakultäten Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Juniorprofessur Kolloidale Systeme |
| Titel an der UBT entstanden: | Nein |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Eingestellt am: | 21 Feb 2017 12:41 |
| Letzte Änderung: | 15 Feb 2023 10:18 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/36166 |