| 摘要 |
<p>The invention relates to a process for preparing composites intended to be used for detecting and decomposing polluting species in aqueous media. According to the invention, the process comprises the synthesis of TiOgels by a sol-gel process, the immersion thereof into a colloidal suspension of noble metal nano particles and their drying under supercritical conditions with liquid carbon dioxide, at a temperature of 40˘C and a pressure of 1400 psi, followed by the immersion of the aerogels resulting from drying the gels under supercritical conditions with liquid carbon dioxide, into a colloidal suspension of noble metal nano particles.</p> |
