| 摘要 |
The invention relates to a method for preparing, by photo-assisted condensation, a composition comprising a semiconductor containing, on its surface, core-shell type particles, said core comprising one or more metallic-state elements M, said shell comprising a metal oxide M'xOy, which method comprises providing a semiconductor containing, on its surface, particles comprising one or more metallic-state elements M, suspending the semiconductor while applying a stirring action and irradiation, then introducing, while applying a stirring action and irradiation, a soluble precursor of a metal M' with the same degree of oxidisation as that of the metal oxide of the desired M'xOy shell, introducing, while applying a stirring action and irradiation, a basic or acid agent in order to precipitate the metal oxide M'xOy, separating the composition from the suspension, and drying same. |
