| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Energy Materials for Sustainable Development
|
| Presentation Title |
Au NPs-decorated CeO2-TiO2 for Efficient Photoassisted CO Preferential Oxidation |
| Author(s) |
Elisa Moretti, Mojitaba Gilzad Kohan, Antonia Infantes Molina, Alberto Vomiero |
| On-Site Speaker (Planned) |
Elisa Moretti |
| Abstract Scope |
The investigation of CeO2-based materials is a research hotspot for environment and energy-related applications. Tuning the morphological features of a catalyst has emerged as an important strategy to improve activity and there has been extensive research to develop highly active ceria-based systems rationally designed with a controlled morphology.
This work aims at investigating the behavior of Au nanoparticles supported on CeO2-TiO2 nanostructured matrices in the CO preferential oxidation in H2-rich stream (photo CO-PROX). CeO2 samples containing different TiO2 loadings were synthesized by a surfactant-free slow co-precipitation method. Au NPs deposited on the surface of the Ce-Ti mixed oxides. The samples appeared organized in a hierarchical needle-like structure, with homogenously distributed Au NPs decorating the support. The systems showed a morphology dependent behavior in the CO-PROX under simulated solar light irradiation, resulting much more active than a benchmark sample with a non-organized structure. A clear morphology-functionality correlation was found. |