Abstract
Abstract Novel Ag-Ag2CO3/Bi2MoO6 composites were obtained through in situ formation of Ag2CO3 rods/nanoparticles onto Bi2MoO6 nanosheets, followed by photoreduction. These composites were found to be much more active than Bi2MoO6 in photocatalytic degradation of rhodamine B (RhB) under visible-light irradiation. In particular, an Ag-Ag2CO3/Bi2MoO6 composite with a theoretical Ag2CO3/Bi2MoO6 mass ratio of ∼27.5% exhibited the highest photocatalytic activity. It was also the most active in photocatalytic degradation of methyl blue (MB) and tetracycline hydrochloride (TC), due to the enhanced visible-light absorption and efficient separation of photogenerated carriers. The good reusability of Ag-Ag2CO3/Bi2MoO6 was verified by cycling degradation experiments. The dominant active species were found to be photogenerated holes (h+). A possible photocatalytic mechanism was proposed.
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