Abstract
AbstractCryptomelane‐type manganese oxide (OMS‐2) was synthesized successfully using urea hydrogen peroxide (urea⋅H2O2) as the reductant in an acidic buffer solution. As‐prepared crystalline material was fully characterized by XRD, BET, XPS, SEM and HRTEM. The results demonstrate that OMS‐2 has nanofiber with short nanorod morphologies, very rich oxygen vacancy defects and more exposed crystal facets compared with ones synthesized with other H2O2‐containing reductants. These unique properties make nanostructural OMS‐2 an excellent heterogeneous catalyst in aerobic oxidation reactions, such as selective oxidation of mercaptan and oxygenation of alkylarenes.
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