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Free keywords:
ORDERED MESOPOROUS CO3O4; CRYSTALLINE WALLS; ETHANOL; SILICA; CATALYST; MCM-41; TRANSFORMATION; NANOPARTICLES; ACTIVATION; REDUCTION
Abstract:
A detailed study on the pseudomorphic conversion of ordered mesoporous Co3O4 and ferrihydrite into CoO and Fe3O4, respectively, by using alcohol/water vapor as a gentle reducing agent is described. The reduction conditions for the transformation were optimized. In addition, the first one-pot synthesis of mesostructured CoO by using nanocasting with cubic ordered silica as a hard template is demonstrated.