Polymerization Improvement of Graphitic Carbon Nitride Films Derived from Melamine and Thiourea.

Deposition of low-cost, efficient, and environmentally friendly graphitic carbon nitride (g-CN) films as photoanodes is a crucial step for constructing photoelectrochemical (PEC) cells and exploring their PEC performance. Currently, the improvement of the photocurrent density of g-CN films is badly needed for their practical applications in PEC water splitting. Enhancing the g-CN crystallinity by optimizing their synthesis conditions only through screening appropriate reactant precursors is insufficient for this purpose.