| 초록 |
The effective assembly of functional entities within nanohybrids with unique architecture is important owing to the improvement of interfacial surfaces, defects, and catalytically active sites, however, it is still challenging. Herein, we report a controllable synthesis of gold nanodot assembly within cobalt chalcogenide nanoshell (dots-in-shell Au/CoxSy nanohybrids). The cobalt-based zeolite imidazole framework (ZIF-67) is used as a versatile sacrificial template to yield dots-in-shell Au/CoxSy nanosystems. Due to the synergistic effect of the well-dispersed Au nanodots and the thin CoxSy nanoshell, the resulted dots-in-shell Au/CoxSy nanohybrids exhibit enhanced performance for the oxygen evolution reaction with low overpotential values at a current density of 10 mA cm−2 and a small Tafel slope (343 mV and 62 mV dec–1, respectively). |
