Enhancement of UV-responsive photocatalysts aided by visible-light responsive photocatalysts: Role of WO3 for H2 evolution on CuCl

[Display omitted] •WO3 absorbs visible light but inactive for photocatalytic H2 evolution.•We found visible-excitation of WO3 can assist H2 evolution on UV-active CuCl photocatalysts.•Activity of CuCl/WO3 increased 1.7 fold by the addition of visible light than UV only.•Z-schematic recombination tak...

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