Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
Inorg Chem. 2011 Nov 7;50(21):11069-74. doi: 10.1021/ic201608j. Epub 2011 Oct 10.
Gold nanoparticles (NPs) stabilized by carboxylate modified polyvinylpyrrolidone have been prepared and fully characterized. The gold NPs efficiently catalyze the aerobic oxidation of benzyl alcohol in water at ambient temperature and are easily separated from the reaction mixture by lowering the pH of the solution, causing the NPs to precipitate. The mechanism of the precipitation process has been studied. Due to the efficiency of this process, the NPs may be reused as catalysts by readjusting their pH.
采用羧酸改性聚乙烯吡咯烷酮稳定的金纳米粒子（NPs）已被制备并进行了全面的表征。金 NPs 在室温下高效地催化苯甲醇的有氧氧化，并且通过降低溶液的 pH 值使 NPs 沉淀，可以将其从反应混合物中轻易分离。已经研究了沉淀过程的机制。由于该过程的效率，通过重新调整 NPs 的 pH 值，它们可以被再用作催化剂。
