Unknown

Dataset Information

0

Bifunctional CO oxidation over Mn-mullite anchored Pt sub-nanoclusters via atomic layer deposition.


ABSTRACT: CO oxidation is a widely used model system for understanding fundamental aspects of heterogeneous catalysis. While platinum (Pt) continues to be a reference material for CO oxidation catalysis, poisoning of Pt catalysts presents a critical issue that blocks reaction sites and impedes subsequent reaction steps. Fabrication of CO poison-free Pt catalysts remains a great challenge due to its CO-philic nature. Herein, we report a Pt based catalyst to effectively tackle CO poisoning by tightly anchoring Pt sub-nanoclusters onto Mn-mullite oxide (SmMn2O5) via atomic layer deposition. Superior CO oxidation activity has been observed with a significantly lowered light-off temperature and apparent activation energy. In situ diffuse reflectance infrared Fourier transform spectroscopy analysis, oxygen isotope experiments and density functional theory calculations confirm that the low-temperature activity originates from active oxygen atom sources at the bifunctional interface structure.

PROVIDER: S-EPMC5909126 | BioStudies | 2018-01-01T00:00:00Z

REPOSITORIES: biostudies

Similar Datasets

| S-EPMC6835550 | BioStudies
2016-01-01 | S-EPMC4967863 | BioStudies
| S-EPMC8490350 | BioStudies
| S-EPMC6566076 | BioStudies
| S-EPMC5472761 | BioStudies
| S-EPMC7054718 | BioStudies
| S-EPMC8413426 | BioStudies
| S-EPMC6813309 | BioStudies
| S-EPMC8692999 | BioStudies
| S-EPMC6902616 | BioStudies