Journal
ACS APPLIED NANO MATERIALS
Volume 3, Issue 5, Pages 4187-4196Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.0c00380
Keywords
MnaCobOx catalysts; polymer nanofilm; CO oxidation; water-resistant catalysis; pollution abatement
Funding
- National Natural Science Foundation of China [21571061]
- Catalysis Development Fund of the Shanghai Institute Technology [A06-CHJJ-12]
- Shanghai Institute Technology Research Fund for Talent Introduction [39120K176067]
Ask authors/readers for more resources
Coating with polymer nanofilm can dramatically improve not only the structural stability of nanostructured transition metal oxides but also their catalytic performance under moisture-rich conditions at low temperature. In this work, upon optimization of the polymer nanofilm-coated nanoparticle catalysts MnaCobOx we have achieved an efficient and relatively stable CO oxidation at 50 degrees C under moisture-rich condition (0.6 vol % H2O). The catalysts were characterized by several complementary techniques (TEM, TG, FTIR, XPS, XRD, TPD, etc.), among which X-ray photoelectron spectroscopy (XPS) showed that the catalytic activities were highly correlated to the ratios of Co3+/Co2+ and Mn2+/Mn3+ as well as the percentage of vacancy oxygen (O-v), indicating that, in addition to the water-repulsing effect of the coating polymer, the synergistic actions among the Co-Mn ion pairs and oxygen vacancies (V-O) played important roles for the low-temperature transmembrane CO oxidation. The mechanism for CO catalytic oxidation inside the polymer nanofilm coating has been discussed.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available