Abstract
For the first time, a series of flower-like CuS/UiO-66 composites with different UiO-66 contents were fabricated via a facile solvothermal method. The as-prepared composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV–vis optical absorption spectroscopy and photoluminescence (PL) spectra. The CuS/UiO-66 composites exhibited remarkable performance for the degradation of Rhodamine B (RhB) as compared to pure UiO-66 under visible-light irradiation. Moreover, the catalytic activity was related to the weight ratio of CuS to UiO-66 in the composites, and the CuS/UiO-66 (weight ratio 2.4:1) composites exhibited the highest photocatalytic activities. The improved photocatalytic activity contributed to the synergetic effect between CuS and UiO-66, which facilitated the separation efficiency of photogenerated electron-hole pairs. The possible mechanism of the enhanced photocatalytic performance of the CuS/UiO-66 composites was also discussed. This work demonstrates that the CuS/UiO-66 composite is a promising photocatalyst for removing of organic pollutants.
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