Zirconia coating for enhanced thermal stability of gold nanoparticles
| Autor: | K. Raulin, Christophe Kinowski, Laurence Bois, Odile Cristini-Robbe, D Branzea, F. Chassagneux, A Pastre, A. Boe, Remy Bernard, Nathalie Rolland |
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| Přispěvatelé: | Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 (PhLAM), Université de Lille-Centre National de la Recherche Scientifique (CNRS), Institut de Recherche sur les Composants logiciels et matériels pour l'Information et la Communication Avancé - USR 3380 (IRCICA), Centre National de la Recherche Scientifique (CNRS)-Université de Lille, Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), Laboratoire des Multimatériaux et Interfaces (LMI), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Polymers and Plastics Nanoparticle Nanotechnology 02 engineering and technology 010402 general chemistry 01 natural sciences Biomaterials Tetragonal crystal system Sodium borohydride chemistry.chemical_compound [CHIM.GENI]Chemical Sciences/Chemical engineering [CHIM]Chemical Sciences Thermal stability Cubic zirconia Metals and Alloys [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Amorphous solid chemistry Chemical engineering Colloidal gold Crystallite 0210 nano-technology |
| Zdroj: | Materials Research Express Materials Research Express, IOP Publishing Ltd, 2016, 3 (1), pp.015002. ⟨10.1088/2053-1591/3/1/015002⟩ Materials Research Express, 2016, 3 (1), pp.015002. ⟨10.1088/2053-1591/3/1/015002⟩ |
| ISSN: | 2053-1591 |
| Popis: | International audience; This paper describes a rapid, simple and one-step method for the preparation of 2–4 nm diameter zirconia-coated gold nanoparticles at room temperature. These nanoparticles were synthesized by two simultaneous processes: the chemical reduction of tetrachloroauric acid with sodium borohydride and the formation of zirconia sol–gel matrices. All the gold nanoparticle sols were characterized by UV–visible absorption and transmission electron microscopy to determine the nanoparticle size and shape. The synthesis method is a combination of a polymeric structure of the amorphous zirconia and the use of a strong reducing agent, and it yields to very small quasi-spherical gold nanoparticles at room temperature. The thermal stability up to 1200 °C of the coated nanoparticles was studied by x-ray diffraction. The metastable tetragonal phase of the zirconia coating was obtained at 400 °C, and a progressive transformation from tetragonal to monoclinic phases of the zirconia coating was observed up to 1100 °C. After the heat treatment at 400 °C, the crystallite size of the gold nanoparticles was about 29 nm, and it remained unchanged from 400 °C to 1200 °C. These results are promising for the development of such materials as doping elements for optical fiber applications. |
| Databáze: | OpenAIRE |
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