Exterior and Internal Uniform Loading of Pt Nanoparticles on Yolk-Shell La2O3 by Acoustic Levitation Synthesis with Enhanced Photocatalytic Performance
| Autor: | Qing Chang, Hongjing Wu, Yinkai Yu, Ming Qin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Nanostructure Oxide Nanoparticle 02 engineering and technology engineering.material 010402 general chemistry Acoustic levitation 01 natural sciences lcsh:Technology Article Metal chemistry.chemical_compound La2O3 synergistic effect Methyl orange General Materials Science lcsh:Microscopy lcsh:QC120-168.85 lcsh:QH201-278.5 lcsh:T Pt 021001 nanoscience & nanotechnology 0104 chemical sciences Chemical engineering chemistry lcsh:TA1-2040 acoustic levitation visual_art engineering visual_art.visual_art_medium Photocatalysis Noble metal lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 photocatalysis |
| Zdroj: | Materials Volume 13 Issue 1 Materials, Vol 13, Iss 1, p 107 (2019) |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma13010107 |
| Popis: | By the deposition of noble metal nanoparticles on a metal oxide substrate with a specific micro-/nanostructure, namely, yolk-shell structure, a remarkable improvement in photocatalytic performance can be achieved by the composites. Nevertheless, noble metal nanoparticles only distribute on the surface shell of metal oxide substrates when the conventional wet-chemistry reduction approach is employed. Herein, we proposed a novel acoustic levitation synthesis of Pt nanoparticles deposited on yolk-shell La2O3. The composites not only displayed well-defined, homogeneous distribution of Pt NPs on the exterior shell of La2O3 and the interior La2O3 core, but an enhanced chemical interaction between Pt and La2O3. The unique structure not only can display improved photocatalytic degradation rate toward methyl orange, but also may show great potential in fields of hydrogen generation, environmental protection, etc. The novel acoustic levitation synthesis can supplement the methodology of synthesizing well dispersed noble metal oxides over the whole yolk-shell structure through noble metal NPs deposition method. |
| Databáze: | OpenAIRE |
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