Abstract

The muscovite mica basal plane surface was investigated directly with atomic force microscopy (AFM), zeta potential, and contact angle measurements after H + , Li + , K + , and Mg 2+ ion exchange followed by heating at a temperature of 300 o C. Typical AFM images of the H- and K-mica showed an ideal array of light spots corresponding to one to five oxygen ions on the surface crystallographic layer of the muscovite mica. No spots were observed in the cavity surrounded by the light spots. In particular, the ideal image of H-mica, which should correspond to a bare basal plane where no interlayer cation exists, indicated that the calcination did not damage the mica basal plane

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