Three-dimensional solvation structure of ethanol on carbonate minerals

• Hagen Söngen,
• Ygor Morais Jaques,
• Peter Spijker,
• Christoph Marutschke,
• Stefanie Klassen,
• Ilka Hermes,
• Ralf Bechstein,
• Lidija Zivanovic,
• John Tracey,
• Adam S. Foster and
• Angelika Kühnle

Beilstein J. Nanotechnol. 2020, 11, 891–898, doi:10.3762/bjnano.11.74

• -resolution 3D atomic force microscopy (AFM) [1], the hydration structure of many interfaces has been studied, including the aqueous interface of mica [2] calcite [3][4] dolomite [5][6] and organic crystals [7]. However, while the majority of 3D AFM works have concentrated on water, comparatively fewer

Direct nanoscale observations of the coupled dissolution of calcite and dolomite and the precipitation of gypsum

• Francesco G. Offeddu,
• Jordi Cama,
• Josep M. Soler and
• Christine V. Putnis

Beilstein J. Nanotechnol. 2014, 5, 1245–1253, doi:10.3762/bjnano.5.138

• /bjnano.5.138 Abstract In-situ atomic force microscopy (AFM) experiments were performed to study the overall process of dissolution of common carbonate minerals (calcite and dolomite) and precipitation of gypsum in Na2SO4 and CaSO4 solutions with pH values ranging from 2 to 6 at room temperature (23 ± 1

• nucleation induction times. The gypsum precipitate quickly coated the calcite surface, forming arrow-like forms parallel to the crystallographic orientations of the calcite etch pits. Gypsum precipitation coupled with dolomite dissolution was slower than that of calcite, indicating the dissolution rate to be

• the rate-controlling step. The resulting gypsum coating partially covered the surface during the experimental duration of a few hours. Keywords: atomic force microscopy (AFM); calcite; dissolution–precipitation; dolomite; gypsum; Introduction The overall process of dissolution of carbonate minerals