Polymer Nanofilm-Coated Co–Mn Oxide Nanoparticle Catalysts for Transmembrane CO Oxidation at 50 °C under Moisture-Rich Conditions
Source abstract
Abstract
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 °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 (VO), 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 (VO) played important roles for the low-temperature transmembrane CO oxidation. The mechanism for CO catalytic oxidation inside the polymer nanofilm coating has been discussed.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Catalytic Processes in Materials Science · Nanomaterials for catalytic reactions · Electrocatalysts for Energy Conversion
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Research Institute of Applied Catalysis, School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China
Funding
Shanghai Institute of Technology · National Natural Science Foundation of China
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