Visible-light assisted hydrogen evolution via water splitting over micro-fluidized Cu-doped polymeric carbon nitride sheets

초록

Hydrogen production via photocatalytic water splitting was investigated by Cu-doped polymeric carbon nitride and Cu-doped substrate under visible light irradiation. The results showed that Cu-doped substrate exhibited higher hydrogen production in the visible range than bare polymeric carbon nitride. Notably, the photocatalytic power of prepared photocatalysts as the hydrogen evolution rate was recorded as similar to 1422 mu molg(-1) h(-1) which is 38 manifolds than bulk polymeric carbon nitride. This is because Cu-doped polymeric carbon nitride-based heterostructure confines the band alignment which harvests solar light in the visible range. Also, the doped Cu on the porous PCN sheet-like structure boosts the charge carrier's separation resulting high H-2 yield. The apparent quantum yield of Cu-doped PCN's hydrogen generation is 5.75 % at 420 nm.

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