One-pot hydrothermal synthesis of uniformly cubic Co_3O_4 nanocrystals

摘要

Cubic Co_3O_4 nanocrystals (NCs) were synthesized by a one-pot hydrothermal reaction in the presence of the oxidant KClO_3 and the capping reagent polyvinylpyrrolidone (PVP). The as-prepared Co_3O_4 NCs were uniformly cubic with sharp edges and good crystallinity and showed flat surfaces with {100} facets. The capped PVP could be removed without losing cubic shape by heating the NCs at 300 ℃.