Photocatalysis: Alkali‐Assisted Synthesis of Nitrogen Deficient Graphitic Carbon Nitride with Tunable Band Structures for Efficient Visible‐Light‐Driven Hydrogen Evolution (Adv. Mater. 16/2017)

The photocatalytic performance of graphitic carbon nitride (g-C3N4) is greatly hindered by weak absorption in the visible light region. In article number 1605148, Tierui Zhang and co-workers report a new method to prepare nitrogen defective g-C3Nx with a controlled bandgap, through alkaliassisted thermal polymerization using various precursors. The optimized nitrogen defects can narrow the bandgap of g-C3Nx to harvest more visible light and facilitate charge separation, and thus contribute to the enhanced photocatalytic hydrogen-evolution activity.