Dual functional membranes that can simultaneously remove water-insoluble oil and degrade water-soluble dyes have received considerable attention. Nevertheless, there remain arduous challenges due to the critical restriction of slow degradation rate and the heavy dependence on external stimuli like light, electricity or heat. Herein, we report a superwetting and rapidly catalytic β-MnO₂ mesh prepared by one-step hydrothermal method. In activation of peroxymonosulfate (PMS), this β-MnO₂ mesh can expeditiously degrade dyes without any external stimuli and simultaneously remove oils. The removal efficiencies were all > 99% and the filtrates were proved eco-friendly through leaching test and toxic experiment. Furthermore, a mechanism on the excellent catalytic ability of β-MnO₂ mesh was proposed, i.e. H⁺ was immobilized in 1 × 1 tunnel of β-MnO₂, which made the mesh surface a positive zeta potential and attract more negative sulfate radicals, as a result inducing an improved degradation efficiency. Therefore, we anticipate this bifunctional and ingenious β-MnO₂ mesh can contribute a lot to prompt and mild sewage purifications.

可以同时去除水不溶性油并降解水溶性染料的双功能膜受到了广泛的关注。然而，由于缓慢降解速率的严格限制以及对光，电或热等外部刺激的严重依赖，仍然存在艰巨的挑战。此，我们报告一个超润湿和快速催化β-MnO的₂通过一步水热法网眼制备。在过氧单（PMS）的激活，这β-MnO的₂网格可以在没有任何外部刺激迅速降解染料和同时除去油。去除率均> 99％，滤液通过浸出试验和毒性实验证明是环保的。此外，β-MnO具有优异的催化能力的机理₂，提出了网格，即ħ ⁺固定化在1×1的隧道β-的MnO ₂，这使得网表面的正ζ电势并吸引硫酸盐更负的基团，结果诱导的改进的降解效率。因此，我们预计这种双功能和巧妙的β-的MnO ₂目可以促进很多提示和轻度污水纯化。