Hierarchical polymorphic MnCO3 series induced by cobalt doping via a one-pot hydrothermal route for CO catalytic oxidation?
RSC Advances Pub Date: 2015-03-25 DOI: 10.1039/C5RA04708K
Abstract
In this study, a series of cobalt-doped MnCO3 hierarchical microstructures with different morphologies were synthesized by tuning a single variable (the dopant content) via a one-step, mild solvothermal synthesis in a N,N-dimethylformamide (DMF) solution system. Structure evolution of the polymorphic MnCO3 took place with the morphology obviously transforming from an initial flower-microstructure to fan-like, then to hedgehog-like hemispheres and finally to flake-spheres as the Co2+ theoretical content (Co/(Co + Mn)) increased from 0 to 20% in the solvothermal process. Cobalt ion modulated reaction-limited aggregation (RLA) is proposed in the growth mechanism. The mechanism of Co2+-induced acceleration and full growth is further investigated. The Co2+ doped manganese carbonate displays wonderful catalytic performance towards CO oxidation.
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Journal Name：RSC Advances
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CAS no.: 89640-58-4
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