Hexagonal Cu2O/Pt for photothermal and photo-Fenton synergistic degradation of dye contaminant

The rising pollution of aquatic ecosystems due to industrial dyes makes it essential to create efficient strategies for remediation. In this study, we synthesized an unusual Cu 2 O/Pt photocatalytic Fenton-like catalyst through heterojunction engineering and high-temperature modification of cuprous oxide, with platinum nanoparticles serving as a cocatalyst to enhance charge separation and catalytic efficiency. Under near-infrared light irradiation, the Cu 2 O/Pt catalyst exhibited remarkable photothermal performance, rapidly achieving elevated temperatures that further accelerated the degradation of methylene blue. degradation experiments indicated that the Cu 2 O/Pt catalyst achieved over 99 % removal efficiency, outperforming pure Cu 2 O by facilitating greater hydroxyl radical generation through enhanced hydrogen peroxide decomposition. The enhanced degradation efficiency is attributed to the synergistic effect between Cu 2 O and Pt, which not only expands the effective pH range but also ensures the reproducibility and durability of the catalytic process. The results underscore the Cu 2 O/Pt system's advantageous potential for practical applications in wastewater treatment, offering an effective and sustainable approach to reduce industrial water pollution.