Fast-Geomimicking using Chemistry in Supercritical Water.
Herein we introduce a powerful and fast method to produce nanominerals using a bottom up approach. The supercritical hydrothermal flow synthesis is exploited to produce model nanominerals by mimicking natural environments at high temperatures under pressure. This innovative concept is demonstrated with the talc synthesis; this represents a major technical breakthrough since it allows decreasing the mineral-synthesis time from tens of hours to tens of seconds. Through this example, we show these nanominerals exhibit new crystal-chemistry signals and new properties. This approach provides a means to reproduce the early stages of formation of minerals in different natural environments from sedimentary environments (low temperature and pressure) to hydrothermal/metamorphic environments (high temperature and high pressure).
CNRS, Univ. Bordeaux, ICMCB, UPR 9048, 33600, Pessac, France.
Angela
A
Dumas
Imerys Talc, 2 place Édouard Bouillières, 31100, Toulouse, France.
Marie
M
Claverie
CNRS, Univ. Bordeaux, ICMCB, UPR 9048, 33600, Pessac, France.
Cédric
C
Slostowski
CNRS, Univ. Bordeaux, ICMCB, UPR 9048, 33600, Pessac, France.
Guillaume
G
Aubert
Imerys Talc, 2 place Édouard Bouillières, 31100, Toulouse, France.
Cristel
C
Careme
Géosciences Environnement Toulouse (GET), UMR 5563, UPS-CNRS-IRD-CNES, ERT 1074 Géomatériaux, 14, Avenue Édouard Belin, 31400, Toulouse, France.
Christophe
C
Le Roux
Géosciences Environnement Toulouse (GET), UMR 5563, UPS-CNRS-IRD-CNES, ERT 1074 Géomatériaux, 14, Avenue Édouard Belin, 31400, Toulouse, France.
Pierre
P
Micoud
Géosciences Environnement Toulouse (GET), UMR 5563, UPS-CNRS-IRD-CNES, ERT 1074 Géomatériaux, 14, Avenue Édouard Belin, 31400, Toulouse, France. francois.martin@get.omp.eu.
François
F
Martin
CNRS, Univ. Bordeaux, ICMCB, UPR 9048, 33600, Pessac, France. cyril.aymonier@icmcb.cnrs.fr.
Cyril
C
Aymonier
clay; hydrophilic nanominerals; hydrothermal synthesis; supercritical water; talc