Abstract
At present, the combination of plasmonic metals and semiconductor materials is an effective method to improve the photocatalytic activity. In this paper, Bi was successfully compounded on the surface of 3D flower-like CuS by a simple two-step hydrothermal method. The samples were characterized by XRD, SEM, TEM, BET, XPS, EIS and M-S. The photocatalytic performance of Bi/CuS composites was evaluated by photocatalytic degradation of methylene blue (MB) and methyl orange (MO) under light illumination. The experimental results indicated that the combination of Bi nanoparticles improved the photocatalytic activity to MB and MO of the composites, which were 45.81% and 55.63% than that of pure CuS. In addition, the reaction mechanism in the photocatalytic degradation process was clarified, and the photocatalytic activity enhancement was attributed to the effective separation of photogenerated carriers and the reduction of recombination of photogenerated electron-hole pairs.
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