Redoxable Nanosheet Crystallites of MnO₂ Derived via Delamination of a Layered Manganese Oxide.

Abstract

2003 Nanotechnology Nanotechnology V 1505 Redoxable Nanosheet Crystallites of MnO 2 Derived via Delamination of a Layered Manganese Oxide. -Upon contact with aqueous tetrabutylammonium (TBA) ions, the layered compound H0.13MnO2·0.7H2O undergoes various reactions including intercalation, osmotic swelling, and delamination into single sheets, depending on the TBA concentration. Unilamellar crystallites of MnO2, which are only 0.77 nm in thickness and several hundreds of nanometers in lateral size are successfully isolated from other coexisting phases via centrifugation. Slow drying of these colloidal nanosheets proceeds via two different routes, producing the TBA intercalated phase and the osmotically swollen hydrate. -(OMOMO, Y.; SASAKI*, T.; WANG, L.; WATANABE, M.;

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