LAUSR

Abstract Photocatalyst with more active sites and faster charge transfer are more favorable for organic pollutant degradation. Here with the polyoxometalate (POM) oxidation etching method, we simultaneously achieve a porous nanostructure and an enhanced charge transfer in graphitic carbon nitride. Novel Z-scheme Co-containing WO3/g-C3N4 (label as CoW/CN) composites with porous nanostructure were for the first time fabricated by K6[CoW12O40] oxidation etching. Photocatalytic tests reveal that CoW/CN composites exhibit a highly efficient and durable activity for photodegradation of Rhodamine B (RhB) under visible-light irradiation (λ > 400 nm). The excellent photocatalytic performance originates from the porous nanostructure with high specific surface area, the Z-scheme heterostructure with efficient charge separation and the enhanced optical absorption ability by implanted metal oxide.