Effect of pHs on the Structure Evolution of Platinum Nanoclusters and Their Surface Plasmon Resonance Properties
| Autor: | Haram Moon, M. Habib Ullah, Chang-Sik Ha |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Aqueous solution
Materials science Absorption spectroscopy Dispersity Biomedical Engineering Nanoparticle Bioengineering General Chemistry Surface Plasmon Resonance Condensed Matter Physics Nanostructures Nanomaterials Nanoclusters Microscopy Electron Transmission Chemical engineering Nanoparticles General Materials Science Surface plasmon resonance High-resolution transmission electron microscopy Platinum |
| Zdroj: | Journal of Nanoscience and Nanotechnology. 21:4700-4704 |
| ISSN: | 1533-4880 |
| Popis: | Multi-structured platinum nanoclusters have been prepared through a one-step aqueous synthetic process by controlling pHs. The included structures are closely packed 3-dimensional (3D) dendrites, loosely packed 3D dendrites, short-order dendritic chains, long-order dendritic chains, flatten nanoclusters and monodisperse nanoparticles. The high resolution transmission electron microscopy images (HRTEM) display that the nanoclusters with a variety of structures are filled with grains of average size ~2.0 nm. The images of the nanoclusters demonstrated that Pt nanoparticles were not fused to each other, but their aggregations were separated by cetyltrimethylammonium bromide (CTAB). The as-prepared Pt nanomaterials were studied by UV-visible absorption spectroscopy to identify their surface plasmon resonance (SPR) activities. The structure dependent SPR signals have been observed from 200 nm–800 nm. |
| Databáze: | OpenAIRE |
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