All-solid-state Z-scheme BiVO_(4)-Bi_(6)O_(6)(OH)_(3)(NO_(3))_(3)heterostructure with prolonging electron-hole lifetime for enhanced photocatalytic hydrogen and oxygen evolution

摘要

As a visible-light response photocatalyst,BiVO_(4)is widely used in photocatalytic oxygen evolution.In this study,a novel BiVO_(4)-Bi_(6)O_(6)(OH)_(3)(NO_(3))_(3)(BBN)heterostructure fabricates via a simple one-pot hydrothermal approach is certified to effectively restrain the recombination of carriers by efficient spatial charge separation.By employing BBN as a reductive-function photocatalyst,a solid-state Z-scheme is constructed to improve the photo-redox capacity of BiVO_(4)and hydrogen production is realized in the BiVO_(4)-BBN heterostructure for the first time.The solid-state Z-scheme introduced in the BiVO_(4)-BBN ensures the photoexcited carriers with the powerful redox capacity to participate in the photocatalytic reaction.