Characterization of SiO2/Ag composite particles synthesized by in situ reduction and its application in electrically conductive adhesives
| Autor: | Xiao-ying Cui, Ying-min Wei, Wen-jun Li, Chao Xu |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
chemistry.chemical_classification
Materials science Morphology (linguistics) Scanning electron microscope Mechanical Engineering Composite number Aldehyde Silver nanoparticle Ion chemistry Chemical engineering Mechanics of Materials lcsh:TA401-492 lcsh:Materials of engineering and construction. Mechanics of materials General Materials Science Adhesive Composite material Spectroscopy |
| Zdroj: | Materials & Design, Vol 83, Iss, Pp 745-752 (2015) |
| ISSN: | 0264-1275 |
| DOI: | 10.1016/j.matdes.2015.06.036 |
| Popis: | In the study, SiO2/Ag composite particles with silver coating onto the surface of silica have been successfully prepared via a novel and facile approach (Oxidation–Reduction Method). In this approach, the SiO2 particles were first modified with 3-ammoniatriethoxysilane (APTES) and glyoxalic acid (GA) through two-step reaction, the aldehyde group (CHO) were anchored onto the surfaces of silica spheres via electrostatic attraction, these [Ag(TEA)2]+ ions in the solution were then reduced by the CHO and coated onto the surface of silica to obtain SiO2/Ag composite particles. The effects of the reaction conditions on silver content and synthetic mechanism had also been discussed. The structure, morphology and optical properties of the SiO2/Ag composite particles were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and UV–vis spectroscopy. The results showed the surface of SiO2 was surrounded by pure silver nanoparticles, and the silver nanoparticles had face-centered-cubic structure, the SiO2/Ag composite particles with core–shell morphology and special optical properties. And the small content SiO2/Ag composite particles applied in electrically conductive adhesives (ECAs) improved the electrical bulk resistivity and tensile shear strength. Keywords: Silver nanoparticles, SiO2/Ag composite, Silver content, Situ reduction |
| Databáze: | OpenAIRE |
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