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Size-Controlled Synthesis and Microstructure Investigation of Co3O4 Nanoparticles for Low Temperature CO Oxidation

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons58501

Dangwal Pandey,  A.
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons58646

Jia,  Chunjiang
Research Group Rinaldi, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons58966

Schmidt,  W.
Research Group Schmidt, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons58988

Schwickardi,  Manfred
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons58985

Schüth,  Ferdi
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons59100

Weidenthaler,  Claudia
Research Group Weidenthaler, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Citation

Dangwal Pandey, A., Jia, C., Schmidt, W., Leoni, M., Schwickardi, M., Schüth, F., et al. (2012). Size-Controlled Synthesis and Microstructure Investigation of Co3O4 Nanoparticles for Low Temperature CO Oxidation. Journal of Physical Chemistry C, 116(36), 19405-19412. doi:10.1021/jp306166g.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000E-746C-8
Abstract
Noble-metal-free functional oxides are active catalysts for CO oxidation at low temperatures. Spinel-type cobalt oxide (Co3O4) nanoparticles can be easily synthesized by impregnation of activated carbon with concentrated cobalt nitrate and successive carbon burn off. Mean size and particle size distribution can be tuned by adding small amounts of silica to the carbon precursor, as witnessed by whole powder pattern modeling of the X-ray powder diffraction data. The catalytic tests performed after silica removal show a significant influence of the mean domain size and of size distribution on the CO oxidation activity of the individual Co3O4 specimens, whereas defects play a less important role in the present case.