Shape control of silver nanoparticles and their stability on Al2O3
| Autor: | Kevin G. Stamplecoskie, Anatoli Ianoul, Adam Bottomley, Daniel Prezgot, Graham C. Beaton |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
business.industry Nanoparticle Nanotechnology 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Silver nanoparticle 0104 chemical sciences Nanomaterials Colloid Phase (matter) Materials Chemistry Particle Photonics 0210 nano-technology business Plasmon |
| Zdroj: | Journal of Materials Chemistry C. 8:10755-10760 |
| ISSN: | 2050-7534 2050-7526 |
| Popis: | From antimicrobial studies to photonic devices, silver nanoparticles have been an exciting material, investigated for decades. Much of the efforts have been focused on tunable size, shape and optical properties of silver colloids. Although many advancements have been made there remain key limitations, including oxidation, and reactivity, especially in comparison to more stable gold nanomaterials. In this work, we present a method for stabilizing silver nanoparticles on aluminum oxide scaffolding, mitigating the oxidation and aggregation typical of silver particles, while maintaining their highly tunable plasmonic properties. Herein, alumina stabilized silver nanoparticles are subjected to photochemical shape control where the final particle morphology is dependent on whether the Al2O3 is in a solid or colloid phase. This work provides more insight into the complex mechanism(s) of nanoparticle shape control. Particles, with tunable plasmon modes achieved across the visible spectrum, provide optical properties of great relevance to the fields of chemical sensing, catalysis, and photonics while maintaining long-term stability. |
| Databáze: | OpenAIRE |
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