Synthesis and internal electric field dependent photoreactivity of Bi3O4Cl single-crystalline nanosheets with high 001 facet exposure percentages

We prepared Bi3O4Cl single-crystalline nanosheets with high 001 facet exposure percentages and demonstrated that their photoreactivity strongly depended on the magnitude of the internal electric field (IEF), which was correlated with the 001 facet exposure percentage. More 001 facet exposure could induce the generation of stronger IEF, which favored the photogenerated charge separation and transfer, and thus enhancing the photoreactivity.