Abstract
The Sn3O4/g-C3N4 composites were produced by an annealing mixture of g-C3N4 and Sn3O4, which were prepared by calcining urea and hydrothermally treating of SnCl2 solution, respectively. Chacterization of the samples was investigated by powder X-ray diffraction (XRD), Scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), Photoluminescence (PL) and UV-Vis spectra. Studying the degradation of Rhodamine B (RhB) in the presence of visible light showed that the combination of Sn3O4 and g-C3N4 has an enhanced ability in the photocatalysis in comparison with the individual components. From kinetic investigations of RhB degradation, it is found that the SCN25 catalyst has the highest rate constant of 18.14 (min-1 x 103), which was about 11.4 times larger than that of pure g-C3N4. It is possible to explain the improved photocatalytic activity of Sn3O4/g-C3N4 composites by using the Z-scheme pathway.
 
 
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