au@sio2@sio2 nanocatalyst prepared by pulse laser ablation for aerobic oxidation of cyclohexane to adipic acid

Here in we report a simple method to create gold nanoparticles coated-double silica shells using a three-step process in which pulse laser ablation of a metallic gold target in an aqueous solution of polyvinylpyrrolidone and calcination at high temperature respectively for achieving of au@sio2@sio2 nanoparticles with narrow size distribution is conducted. the final structure showed 26% conversion in aerobic oxidation of cyclohexane to adipic acid with the 92% selectivity in mild conditions. further, the catalyst saved its activity through six cycles without any major loss.