Theoretical and Experimental Study of Optical Response of Bimetallic Platinum and Gold Nanoparticles: Nanoalloys and Core/Shell Configurations
| العنوان: | Theoretical and Experimental Study of Optical Response of Bimetallic Platinum and Gold Nanoparticles: Nanoalloys and Core/Shell Configurations |
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| المؤلفون: | R. García-Llamas, P.G. Mani-Gonzalez, M. Flores-Acosta, M. Cortez-Valadez, G. Calderón-Ayala, O. Rocha-Rocha |
| المصدر: | Journal of Electronic Materials. 50:4850-4857 |
| بيانات النشر: | Springer Science and Business Media LLC, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | 010302 applied physics, Materials science, Analytical chemistry, Energy-dispersive X-ray spectroscopy, Nanoparticle, 02 engineering and technology, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Platinum nanoparticles, 01 natural sciences, Electronic, Optical and Magnetic Materials, Colloidal gold, Absorption band, 0103 physical sciences, Materials Chemistry, Electrical and Electronic Engineering, 0210 nano-technology, Absorption (electromagnetic radiation), Bimetallic strip, Localized surface plasmon |
| الوصف: | In this research, a theoretical and experimental study of bimetallic gold and platinum nanoparticles is reported. From the green synthesis approach, a combination of rongalite with sucrose is used as a reducing and stabilizing agent. Nanoalloys (Au@Pt) and Pt-core/Au-shell nanoparticles were obtained according to the synthesis process used, and the optical response was analyzed. For nanoalloys, two absorption bands were associated with localized surface plasmon resonances. These were located at 300 nm and another between 350 nm and 365 nm, respectively. For core/shell type nanoparticles, an absorption band centered at 530 nm was observed. The images obtained by transmission electronic microscopy (TEM) confirmed the presence of quasi-spherical nanoparticles with core/shell type configurations. Numerical calculations of the cross sections for a Pt-core/Au-shell nanoparticle with spherical geometry was used to establish a comparison with the experimental absorption in the ultraviolet-visible (UV–Vis) spectrum. Complementary, the TEM images and chemical analysis by energy dispersive spectroscopy (EDS) showed the presence of core/shell type nanoparticles. |
| تدمد: | 1543-186X 0361-5235 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::1d23293e67d231b4e4ee88e76c6ae76b https://doi.org/10.1007/s11664-021-09033-0 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........1d23293e67d231b4e4ee88e76c6ae76b |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 1543186X 03615235 |
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