Photoreforming of Polyethylene Terephthalate Waste to Chemicals and Hydrogen Over Ni–Mo–S‐Modified Graphitic Carbon Nitride

ABSTRACT This research involved the synthesis of an Ni–Mo–S modified graphitic carbon nitride nanocomposite, which was then utilized for the photoreforming of polyethylene terephthalate (PET) under UV light. The system achieved an effective PET degradation. High‐performance liquid chromatography (HPLC) and gas chromatography (GC) analysis indicated the generation of low‐molecular‐weight products like ethylene glycol, formic acid, acetic acid, oxalic acid, and hydrogene. The modified catalyst showed higher reported activity than pristine g‐C 3 N 4 and the exclusion controls. Optical spectra, impedance measurements, and Brunauer–Emmett–Teller analysis were consistent with changes in light absorption, interfacial charge transfer, and specific surface area. The improved catalytic performance can be attributed to better charge separation and synergistic interactions between the g‐C 3 N 4 and Ni–Mo–S components. This study showcases an effective method for the upcycling of plastic waste.