ZnO/Al 2 O 3 /CuO ternary nanocomposites: a bandgap-engineered solution for high-efficiency photocatalytic hydrogen generation

Key Points

• To investigate the photocatalytic efficiency of ZnO/Al2O3/CuO nanocomposites for hydrogen generation.
• Synthesis of nanocomposites using hydrothermal methods.
• Characterization of bandgap narrowing and heterojunction formation.
• Evaluation of photocatalytic performance under visible light.
• ZnO/Al2O3/CuO nanocomposites exhibited enhanced visible-light absorption.
• Improved charge separation was observed, indicating more effective photocatalytic activity.
• The engineered bandgap led to higher hydrogen production rates compared to traditional photocatalysts.