Removal of Aqueous Phenol by Adsorption and Oxidation with Doped Hydrophobic Cryptomelane-Type Manganese Oxide (K−OMS-2) Nanofibers
| Autor: | Lei Jin, Boxun Hu, Samuel Frueh, Chun-Hu Chen, Steven L. Suib, Raymond Joesten |
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| Rok vydání: | 2010 |
| Předmět: |
Materials science
Inorganic chemistry Infrared spectroscopy engineering.material Surfaces Coatings and Films Electronic Optical and Magnetic Materials Catalysis Metal General Energy Adsorption Transmission electron microscopy visual_art Selective adsorption Nanofiber visual_art.visual_art_medium engineering Cryptomelane Physical and Theoretical Chemistry |
| Zdroj: | The Journal of Physical Chemistry C. 114:9835-9844 |
| ISSN: | 1932-7455 1932-7447 |
| Popis: | Molecular adsorption and oxidation at manganese oxide/liquid interfaces has attracted increased interest due to its importance in the development of heterogeneous catalysts, microbial fuel cells, and selective adsorption materials. Here we report the adsorption and oxidation of phenolic compounds on Cu2+, Co3+, and Ce4+ doped K−OMS-2 nanofibers. Different metal ion doped K−OMS-2 catalysts show distinct adsorption and oxidation ability. The structure and compositions of doped K−OMS-2 catalysts were characterized by X-ray diffraction and atomic absorption analyses. The relationships of catalyst structure-catalytic properties were discussed. The adsorbed polymeric nanospheres on doped K−OMS-2 nanofibers were investigated by field emission scanning electron microscopy, Fourier transform infared spectroscopy, transmission electron microscopy, and energy dispersive X-ray analyses. These nanospheres were totally oxidized to CO2 in oxygen or air at 553−603 K catalyzed by doped and undoped K−OMS-2 itself. OMS-2 wa... |
| Databáze: | OpenAIRE |
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