A detailed study on the pseudomorphic conversion of ordered mesoporous Co(3)O(4) and ferrihydrite into CoO and Fe(3)O(4), 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.
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Tüysüz et al. (2012) studied this question.