Construction of a dual-channel mode for wide spectrum-driven photocatalytic H2 production

Abstract

The composite with heavily incorporated H_xWO₃ (H_0.53WO₃/CdS) was successfully synthesized by a facile method of photo-assisted in situ reduction and applied in photocatalytic water splitting into H₂. Its photocatalytic activity is about 70 times greater than that of pure CdS. Such a heterostructure shows wide spectral response in the UV-vis-NIR range, which is attributed to the LSPR of H_0.53WO₃. In the vis-NIR-driven photocatalytic water reduction process, a unique dual path for generating H₂ from water is constructed, which is contributed by the synergistic photocatalysis effect between the charge-carrier separation driven by the Z-scheme and hot electron injection induced by LSPR (Localized Surface Plasmon Resonance).