g-C₃N₄におけるポリ酸アニオン誘起界面電荷移動を利用した可視光光触媒作用

Photocatalytic processes are fundamentally governed by interfacial charge separation and transfer dynamics. Herein, we investigate the role of polyoxometalate (POM) (H₃PMo₁₂O₄₀·xH₂O, PMo₁₂) as an interfacial electron acceptor when coupled with graphitic carbon nitride (g-C₃N₄). By integration of PMo₁₂ with g-C₃N₄ in controlled ratios, a series of PMo₁₂@g-C₃N₄ composites were constructed to elucidate interfacial electronic interactions and charge-transfer behavior. As a consequence of the enhanced interfacial charge dynamics, the optimized composite containing 5 wt % PMo₁₂ exhibits a visible-light-driven hydrogen evolution rate of 3.38 mmol g^-1 h^-1, corresponding to a 2.56-fold enhancement compared to that of pristine g-C₃N₄. This study highlights a POM-driven interfacial charge separation strategy and provides mechanistic insights into the design of semiconductor-cluster hybrid photocatalysts.