Study on the preparation and application of amorphous Cu-CN intermediates based on preassembly strategy

This study synthesized amorphous copper-doped carbon nitride intermediates (Cu/CN-400) via a template-free self-assembly approach using melamine as the precursor, copper sulfate pentahydrate as the copper source, and deionized water as solvent. By controlling thermal polycondensation temperature (400℃ optimal), we regulated intermediate condensation degrees and achieved transformation of copper from ionic to amorphous states. Comprehensive characterization (XRD, FTIR, SEM, TEM, XPS，BET,ICP) revealed the intermediates' morphological and physicochemical properties, enabling proposal of a formation mechanism for amorphous Cu-CN intermediates through template-free self-assembly and thermal condensation. Heterogeneous copper-doped carbon nitride catalysts derived from Cu/CN-400 intermediates demonstrated significantly enhanced Fenton-like catalytic performance, indicating broad application prospects.