| Abstract Scope |
Hybrid-nanocomposite offers a platform to enhance visible-light absorption and improve the efficient separation of photogenerated charges. These materials can absorb a broad range of light wavelengths, enabling the critical separation and migration of charge carriers necessary for efficient water-splitting. In this study, we synthesized ZnO@CdS nano-heterostructures with varying weight percentages, efficiently combining the wide-bandgap of ZnO with the narrow-bandgap of CdS to amplify photocatalytic efficiency. These cutting-edge heterostructures achieved remarkable improvements in light absorption, charge separation, H2 production, and photostability. The optimized sample delivered H2 production rates of 3.91 times greater than pure ZnO rods and 3.22 times higher than CdS nanoparticles. Using various techniques, we thoroughly examined the ZnO@CdS nano heterojunction, investigating their crystal structure, chemical state, elemental composition, morphology, bandgap energy, and photocatalytic charge transfer mechanisms. Our work employed sol-gel method at ambient pressure and low temperatures, offering a cost-effective and scalable approach for large-scale H2 production. |