ACS Nano
ACS Nano
5 years ago

In Situ Crystallization of the Insoluble Anhydrite AII Phase in Graphene Pockets

In Situ Crystallization of the Insoluble Anhydrite AII Phase in Graphene Pockets
Anita Ladenburger, Michael K. Kinyanjui, Felix Börrnert, Katharina Wörle, Ute Kaiser, Kerstin Leopold, Dimitri Rommel, Tibor Lehnert
Single-distilled water encapsulated in graphene pockets has been studied by aberration-corrected high-resolution transmission electron microscopy and electron energy loss spectroscopy at an acceleration voltage of 80 kV. Inside the graphene pockets, crystallization and in situ crystal growth are reported and identified as the insoluble AII phase of CaSO4 (anhydrite) in a quasi-two-dimensional system. Its formation condition is discussed with respect to the possible temperature and van der Waals pressure between the graphene sheets.

Publisher URL: http://dx.doi.org/10.1021/acsnano.7b02513

DOI: 10.1021/acsnano.7b02513

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