Abstract
In this study, flower-like Bi2MoO6/Ag3PO4 composite photocatalysts were synthesized through in-situ chemical precipitation, and their photocatalytic activity for Rhodamine B (RhB) degradation was studied. The structure and activity of the composite catalysts were characterized with XRD, SEM, EDX, TEM, HRTEM, SAED, XPS, UV–Vis diffuse reflection absorption spectrum and photocatalytic degradation experiments. The results showed that the photocatalytic performance of the composite Bi2MoO6/Ag3PO4 was significantly better than that of pure Bi2MoO6 and pure Ag3PO4, and the composite with the composition of 0.1Bi2MoO6/Ag3PO4 showed the best performance in the photocatalytic degradation of Rhodamine B (RhB). The degradation rate of RhB reached up to 98% after visible light exposure for 25 min, and the maximum reaction rate constant measured for 0.1Bi2MoO6/Ag3PO4 was 0.09457 min−1, which was twice that of pure Ag3PO4 and 38 times that of pure Bi2MoO6. After three cycles, the catalytic performance of 0.1Bi2MoO6/Ag3PO4 did not decrease significantly, and 82% of RhB was still degraded. Capture experiments showed that holes (H+) and superoxide anions (O-2·) played a major role in the photocatalytic degradation of RhB using 0.1Bi2MoO6/Ag3PO4, and hydroxyl radicals (OH·) only partially contributed to the activity. The energy level structure of Bi2MoO6/Ag3PO4 was conducive to the separation of photogenerated electrons and holes, and as a result, the service life of photogenerated carriers was prolonged. Notably, the photocatalytic activity of the 0.1Bi2MoO6/Ag3PO4 composite photocatalyst was the highest.
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Tan, J., Yan, X., Liu, J. et al. Study of flower-like Bi2MoO6/Ag3PO4 composite constructed by nano sheet and their photocatalytic degradation performance on sporting goods printing and dyeing wastewater. J Mater Sci: Mater Electron 34, 1436 (2023). https://doi.org/10.1007/s10854-023-10841-9
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DOI: https://doi.org/10.1007/s10854-023-10841-9