Machine Learning-Assisted Discovery of Bimetallic Oxides for Highly Efficient Catalytic Ozonation.
Journal:
Environmental science & technology
Published Date:
Jul 28, 2025
Abstract
Catalytic ozonation stands out as an effective process in the advanced treatment of industrial wastewater, where heterogeneous catalysts play a pivotal role. Here, by screening 1603 bimetallic oxides via machine learning (ML), a pioneering ZnCuO was dug out, validated by density-functional theory and experiments. Compared with the literature, ZnCuO significantly boosted the degradation rate constant for oxalic acid ( = 0.30 min) by 1.30-61.22 times. Meanwhile, the average ozone treatment efficiency of chemical oxygen demand (COD) and total organic carbon (TOC) for high-salinity coal chemical wastewater (hsCCW), i.e., ΔCOD/ΔO (1.01 kg kg) and ΔTOC/ΔO (0.30 kg kg), reached 0.61-4.60-fold and 1.32-4.84-fold of the literature, respectively. Mechanistic studies revealed a unique nonradical pathway dominated by O, ensuring resistance to environmental interference. Its particular Cu-O-Zn configuration enhanced stability and active-site exposure, which is critical for scalable applications. Overall, this research and development (R&D) framework encompassing multidimensional "theoretical calculation-machine learning-precision synthesis-mechanism elucidation" establishes a generalizable methodology for intelligent material innovation and environmental application.
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