Synthesis of Hierarchical Graphdiyne-Based Architecture for Efficient Solar Steam Generation

A study has been conducted to develop a new structure based on three-dimensional (3D) copper foam supported one-dimensional (1D) CuO nanowires anchoring with vertical twodimensional (2D) GDY nanosheets. In this architecture, the copper foam provides the self-supporting sketelon, CuO nanowires are responsible for most solar absorption, and GDY nanosheets could simultaneously trap the light via structual factors and enhance the light absorption through its intrinsic narrow band gap. As a result, a photothermal conversion efficiency of up to 91% has been achieved, making this GDY-based structure promising not only for efficient solar steam generation but also in diverse fields such as water desalination and environmental remediation.