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(a) Graphic illustration of charge transfer for CdS/WO3−x composite; (b) DRS spectra of WO3−x, CdS and CdS/WO3−x−10; (c) hydrogen generation for CdS nanowires, WO3−x and CdS/WO3−x−10 composites in 20 vol% lactic solution under illumination. Reproduced from [31], with permission from Elsevier, 2018.
