Abstract
Abstract Ag dots/flower-like MoS2/rGO multidimensional photocatalysts were successfully prepared via one-pot hydrothermal method. The characterizations of morphology and structure showed that the as-prepared photocatalysts with zero dimensional Ag dots, three dimensional flower-like MoS2 and two dimensional rGO composite structures have been clearly formed in composite multidimensional photocatalysts. Moreover, the photoelectronic performances exhibited that the composite multidimensional structure could efficiently enhance the transfer rate of charges. Especially the intensity of photocurrent was obviously improved after the Ag dots modified MoS2/rGO. The Ag/MoS2/rGO showed excellent photocatalytic activity of degradation tetracycline (TC), the removed rate of TC could reach 85.5% in 90 min. The species trapping experiments and electron spin resonance spin-trap tests clearly revealed that the h+ and ·O2− active species play the key roles during the photocatalytic degradation processes of TC. Overall, the composite multidimensional photocatalysts with zero, three and two dimensional in this work show a promising way to remove the TC wastewater, which suggested one strategy fabricate high active photocatalyst, and the photocatalytic mechanism was also discussed.
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More From: Journal of the Taiwan Institute of Chemical Engineers
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