Proto-Calcite and Proto-Vaterite in Amorphous Calcium Carbonates

• Amorphous order: Amorphous calcium carbonates (ACC) have an intrinsic structure relating to the crystalline polymorphs of calcite and vaterite. The proto-crystalline structures of calcite and vaterite (pc-ACC and pv-ACC) are analyzed by NMR (see picture), IR, and EXAFS spectroscopy, which shows that the structuring of ACC relates to the underlying pH-dependent equilibria.

Ämnesord

NATURVETENSKAP  -- Kemi -- Oorganisk kemi (hsv//swe)

NATURAL SCIENCES  -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)

Nyckelord

amorphous materials

calcium carbonate

crystallization

EXAFS spectroscopy

NMR spectroscopy

Inorganic chemistry

Oorganisk kemi

Materials Chemistry

materialkemi

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