Abstract
Abstract: Silver tungstate (Ag2WO4) supported on graphite like carbon nitride (Ag2WO4@g-C3N4) was synthesized via sono-chemical impregnation method to improve the photo-stability. The photocatalytic performance was evaluated for the degradation of methylene blue (MB) dye under simulated solar light irradiation. The surface area, light absorption capacity and photocatalytic activity of Ag2WO4 were improved in the presence of g-C3N4 support. The photocatalyst of Ag2WO4@g-C3N4 (40%) exhibited the best performance (100%) for the degradation of MB within 120 min of irradiation time. The recycling experiments revealed that the photo-corrosion behavior of Ag2WO4 was strongly inhibited by g-C3N4. A possible mechanism was proposed to explain the electron–hole transfer process between Ag2WO4 and g-C3N4. The results of this research work testified that Ag2WO4@g-C3N4 could be used as a promising photocatalyst under solar light exposure.
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