Cover Feature: Stabilizing Layered BiOBr Photoelectrocatalyst by Van Der Waals Heterojunction Strategy (ChemCatChem 16/2024)

2D MoS2/BiOBr van der Waals heterojunctions can be used for photoelectrocatalytic hydrogen production. The Cover Feature shows a MoS2/BiOBr heterojunction working as a photocathode. The photogenerated electrons from BiOBr mainly flow into two directions: one is migrating towards the MoS2 surface, driving the hydrogen evolution reaction; the other is accumulating on BiOBr and reduces BiOBr to metallic Bi. However, in a heterojunction with small ratio of MoS2, the electrons are prone to transfer to MoS2, thus decreasing the accumulation of electrons on BiOBr and preventing it from deactivation. More information can be found in the Research Article by Mengjiao Wang, Francesco Lamberti, and co‐workers (DOI: 10.1002/cctc.202400282).