Journal article
Controlling the dispersion of Co3O4 nanoparticles inside mesoporous nanorattle catalysts
Department of Chemistry, Technical University of Denmark1
National Centre for Nano Fabrication and Characterization, Technical University of Denmark2
Nanostructure and Functionality, Nanocharacterization, National Centre for Nano Fabrication and Characterization, Technical University of Denmark3
Nanocharacterization, National Centre for Nano Fabrication and Characterization, Technical University of Denmark4
Here we report a simple method to synthesize cobalt nanoparticles inside mesoporous nanorattle catalysts. In this method, zeolitic imidazolate framework ZIF-67 is used as structural template for the preparation of a mesoporous metal oxide shell as well as sacrificial precursor to form cobalt nanoparticles inside the shell.
Furthermore, we demonstrate that the introduction of a carbonization step prior to the final calcination can decrease the required calcination temperature from 550 °C to 300 °C. This has a large effect on the dispersion and catalytic activity of Co3O4 for CO oxidation and decreases the light-of temperature (temperature at 50% conversion) from 160°C to 134°C.
Exploiting metal-organic frameworks as both structural template and sacrificial precursor offers precise control of size, shape and structure and opens up new exiting opportunities for design of advanced nanostructured catalysts.
| Language: | English |
|---|---|
| Year: | 2019 |
| Pages: | 6-9 |
| ISSN: | 18733905 and 15667367 |
| Types: | Journal article |
| DOI: | 10.1016/j.catcom.2019.02.020 |
| ORCIDs: | Mielby, Jerrik Jørgen , Hyllested, Jes Æ. and Kasama, Takeshi |
