Resumen
The decomposition of gold hydroxide to give metallic gold is known to take place around 300 °C in dry environments. However, little information about the gold hydroxide stability in wet environments has been recorded. Here, we present experimental evidence which shows that aqueous/water-enriched gold(iii) hydroxide colloids decompose spontaneously to form gold nanoparticles at temperature values above the freezing point of water. Based on this reaction, we developed a method to decorate silica spheres with gold nanoparticles by precipitation and decomposition of gold(iii) hydroxide onto the silica surface in wet media by a simple one-pot/one-step protocol. The silica-gold nanostructures are prepared in high yield and with a low level of by-products.
Idioma original | Inglés |
---|---|
Páginas (desde-hasta) | 19979-19989 |
Número de páginas | 11 |
Publicación | RSC Advances |
Volumen | 8 |
N.º | 36 |
DOI | |
Estado | Publicada - 2018 |