Facile, one-pot synthesis of Pd@CeO2 core@shell nanoparticles in aqueous environment by controlled hydrolysis of metalloorganic cerium precursor
| Autor: | Eongyu Yi, Mohit Nahata, Johannes W. Schwank, Richard M. Laine, Chang Yup Seo |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Aqueous solution
Materials science Mechanical Engineering One-pot synthesis Inorganic chemistry chemistry.chemical_element Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Catalysis chemistry.chemical_compound Cerium Atrane chemistry Chemical engineering Mechanics of Materials General Materials Science Thermal stability 0210 nano-technology Palladium |
| Zdroj: | Materials Letters. 206:105-108 |
| ISSN: | 0167-577X |
| DOI: | 10.1016/j.matlet.2017.06.114 |
| Popis: | An aqueous, one-pot synthesis of encapsulated palladium (Pd) nanoparticles by cerium dioxide (CeO 2 ) is reported. A metalloorganic compound, cerium (IV) atrane, was prepared and used as water-stable CeO 2 precursor. The CeO 2 shell of the synthesized Pd@CeO 2 core@shell nanoparticles was composed of 2–5 nm nanocrystals exhibiting both micro- and meso-pores. The catalytic activity as well as the accessibility of reactants to the Pd core were confirmed by CO oxidation, where excellent low temperature activity was observed. The thermal stability of the as-prepared Pd@CeO 2 can be enhanced by two methods: (1) forming CeO 2 -ZrO 2 solid solutions and (2) forming SiO 2 secondary shells as a sintering-barrier. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect