The nanoflakes of SnS/SnOheterostructure and SnSwere synthesized by a one-step SnO-templated chemical vapor deposition method. The metal oxide-assisted growth mechanism of SnS/SnOheterostructure and SnSnanoflakes were realized through investigating serial microstructures of products with varied growth time. Furthermore, the photocatalytic activity for MB dyes degradation of varied growth time products was used to explore the effect of product microstructure under the visible light irradiation. The SnO/SnSheterostructure and the oxide vacancies of nanoflakes demonstrated an improved visible light photocatalytic performance for MB degradation, which was around twice of the pure SnSnanoflakes and better than P25. The results of different scavengers on the degradation efficiency for MB indicate the·O, and ·OH are the main active species in the photodegradation reaction. The one-step growth mechanism of SnS/SnOcould prove a facile process to grow metal oxide-metal sulfide heterostructure.
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