NiCo₂O₄/g‐C₃N₄ Heterojunction Photocatalyst for Efficient H₂ Generation

Abstract

Herein, a novel NiCo 2 O 4 /g‐C 3 N 4 heterojunction photocatalyst is synthesized, which shows excellent photocatalytic activity. Photocatalysis studies reveal that the hydrogen generation rate of the 5%‐NiCo 2 O 4 /g‐C 3 N 4 composite photocatalyst can reach 1041.9 μmol g −1 h −1 . NiCo 2 O 4 and g‐C 3 N 4 form a heterojunction, which enhances the absorption capacity of visible light, promotes the separation of charges, and inhibits the recombination of carriers, consequently, improving the performance of photocatalytic hydrogen generation. The photocatalytic reaction mechanism of the NiCo 2 O 4 /g‐C 3 N 4 heterojunction composite is discussed, which provides a method for studying bimetal oxide‐based photocatalysts.