Abstract
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•A novel CNTs@CuBi2O4/AgBiO3 hydrothermally fabricated photocatalyst.•97.94% of MB photocatalytic degradation by CNTs@CuBi2O4/AgBiO3.•CNTs mediating the charge transfer in between CuBi2O4/AgBiO3.•All solid state Z-scheme mechanism.
A novel CNTs@CuBi2O4/AgBiO3, All-Solid State (ASS) Z-scheme photocatalyst was hydrothermally synthesized to explore visible light photocatalytic performance via methylene blue degradation. The ASS Z-scheme heterojunction exhibited 97.94% of degradation in 60 min in visible light. Besides, the photocatalytic activity of heterojunction remained 89.50% after 10 cycles, signifying high stability and reusability of heterojunction. The presence of CNTs on CuBi2O4/AgBiO3 nanoparticles acted as an electron transfer bridge in-between CuBi2O4 and AgBiO3. The ASS Z-scheme-based photocatalytic mechanism considerably enhanced photo-exciton lifetime, longer stability, increased visible light absorption, and photocatalytic activity of fabricated CNTs@CuBi2O4/AgBiO3.