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Exfoliation of Egyptian Blue and Han Blue, Two Alkali Earth Copper Silicate-based Pigments

Article DOI: 10.3791/51686-v • 12:04 min • April 24th, 2014
April 24th, 2014 •
1, 1
1Department of Chemistry, The University of Georgia

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Summary
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The preparation and exfoliation of CaCuSi4O10 and BaCuSi4O10 are described. Upon stirring in hot water, CaCuSi4O10 spontaneously exfoliates into monolayers, whereas BaCuSi4O10 requires ultrasonication in organic solvents. Near infrared (NIR) imaging illustrates the NIR emission properties of these materials, and aqueous dispersions of these nanomaterials are useful for solution processing.

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Exfoliation Egyptian Blue Han Blue Alkali Earth Copper Silicate-based Pigments Preparation CaCuSi4O10 BaCuSi4O10 Ancient Past Modern Times Bulk Forms Melt Flux Solid-state Routes Crystallite Size Reaction Temperatures Hot Water Stirring Exfoliates Monolayer Nanosheets TEM PXRD Ultrasonication Organic Solvents Near Infrared Imaging Near Infrared Emitters Aqueous Nanosheet Dispersions
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