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Abstract
The nonstoichiometric tetragonal Z-scheme Bi17-xGdxV3O33/Bi1.7-yGdyV8O16 fibers heterojunction was prepared by microwave hydrothermal method. It can be concluded that the initial strong alkaline environment can change the ions state from VO3− to V2O74− and VO43− including their connecting ways, generating tetragonal Bi17V3O33 and Bi1.7V8O16. The introduction of Gd3+ ions into the system resulted in surface dissolution, recrystallization, and the surface activity was adjusted. Finally, the Z-scheme Bi17-xGdxV3O33/Bi1.7-yGdyV8O16 fibers heterojunction photocatalyst was formed. Photocatalyst was proved to enhance the light absorption, carriers' migration abilities, and magnetic properties. Moreover, it improved the photocatalytic properties from 36.5% to 96.5% under UV light and was proved a promising photocatalysts.
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