Direct Z-scheme WTe2/InSe van der Waals heterostructure for overall water splitting

WTe 2 /InSe is a direct Z-scheme vdW heterostructure for water splitting. The Te-vacancy can effectively lower the energy of the HER, and the overall water splitting can proceed spontaneously on the surface of the WTe 2 /InSe heterostructure when pH > 7.