Fig. 4: Au arrays/BTO ferroelectric photocatalysts.
From: Bipolar charge collecting structure enables overall water splitting on ferroelectric photocatalysts

a SEM image of an Au array on a BTO single crystal and simulated electric field intensity distribution of Au array/BTO. b High-resolution XPS profiles of Au array/BTO. c Hydrogen evolution reaction of Au array/BTO and BTO. d Overall water splitting reactions of Au array/BTO with cocatalysts in pure water.