The Synthesis of 3D Organic-Inorganic Hybrid Heterojunctions of G-C3n4 Nanoneedles@ti3c2 MXene with Superior Photocatalytic H2 Evolution

3D organic-inorganic hybrid heterojunctions of 1D carbon nitride (g-C3N4) nanoneedles anchoring on 2D Ti3C2 MXene nanosheets have been constructed via a green molten salt treatment. The Ti3C2 MXene nanosheets and molten salt treatment guide the formation of ordered nanoneedle-like g-C3N4. Both the formed heterojunctions and the nanoneedle-like structures contribute charge separation and transfer for superior photocatalytic H2 evolution.