Activation of persulfate with 3D urchin-like CoO-CuO microparticles for DBP degradation: A catalytic mechanism study

Rational modification of the surface structure and interface structure can effectively optimize the catalytic performance and stability of a heterogeneous catalyst. A CoO-CuO bimetallic catalyst with a special urchin-like structure was prepared by a hydrothermal urea precipitation method. This carbon nanosphere template method significantly improves the dispersibility of the material. The special urchin-like nanorod structure expands the specific surface area, resulting in excellent adsorption performance and high catalytic performance. The materials were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The oxidative degradation mechanism of dibutyl phthalate (DBP) using sodium persulfate (SPS) activated by the CoO-CuO double metal oxide catalyst was explored. The synergy between the two metals gives the material a stable and highly catalytic ability.