Efficient water splitting over a hybrid photocatalyst with (002) active facets and heterostructure.

A series of P-CdS@P-MWO x (M = Ni, Mn, Co, Zn, Fe, Cu) hybrid photocatalysts was constructed using different transition metal polyoxometalates [SiW 11 M(H 2 O)O 39 ] n - as precursors via a pyrolysis-phosphidation strategy. Under visible light irradiation ( λ = 420 nm), P-CdS@P-NiWO x shows a good H 2 evolution rate of 418.4 μmol g -1 h -1 and an AQE of 29.9% at 420 nm without adding a sacrificial reagent, which is a nearly 140-fold enhancement over CdS. This study provides a feasible strategy for designing efficient photocatalysts with highly active facets and heterostructure.