| الوصف: |
g-C3N4/FeOCl nanocomposites are prepared by a simple calcination method according to the different composite mass ratios of g-C3N4 and FeOCl. The microstructure and morphology were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM). It is found that the composite samples are mainly composed of FeOCl phase, and the presence of g-C3N4, indicating the successful composite of the sample without destroying the crystal structure of FeOCl. Through Electrochemical impedance spectroscopy (EIS) and transient photocurrent response, it is found that the photoelectrochemical performance of the composite sample g-C3N4/FeOCl-2 is stronger than that of pure FeOCl. In addition, through photo-Fenton and radical-trapping experiments, it is found that g-C3N4/FeOCl-2 degrades 92% of Rhodamine B (RhB) within 90 min, and ·OH radicals play an important role in the process of photo-Fenton degradation. The enhanced photocatalytic performance is mainly ascribed to the Z-type heterojunctions between FeOCl and g-C3N4, preventing the recombination of photogenerated electrons and holes, and improving the absorption efficiency of natural light. In this work, the high-efficiency photo-Fenton performance of g-C3N4/FeOCl-2 provides a new idea about the modification of pure FeOCl. |
