Ordered honeycomb-like network of MnO2·nH2O nanocrystals formed on the surface of a Mn(OAc)2 solution drop upon interaction with O3 gas

Planar ordered honeycomb-like structures of the MnO₂ layered birnessite-type crystalline form have for the first time been synthesized on the surface of Mn(OAc)₂ solution drops upon interaction with O₃ gas. The obtained network consists of 2D nanocrystals of the thickness up to 10nm. The prepared material possesses a hierarchical structure and can be used in a fabrication of advanced sensor and electrode materials.