To date, zero-valent iron (ZVI)-based technique has encountered a baffle, challenging simultaneous detoxification of refractory rhodamine B (RhB) and p-nitrophenol (PNP) possessing strong electronwithdrawing nitro-group. In this study, we synthesized Ag-Cu decorated sponge iron (s-Fe⁰)-based trimetal for simultaneous degradation of RhB and PNP. The results show that Cu-Ag co-doping s-Fe⁰ (s-Fe⁰-(Cu-Ag)) achieves approx. 90.6 % of maximized removal of RhB; the preferred s-Fe⁰-(5 wt%Cu-1 wt%Ag) assisted with 6 L/min aeration rate simultaneously declines RhB and PNP within 10 recycling tests; non-aeration process obtains a complete reduction of PNP as well as merely approx. 23.9 % removal of RhB. Moreover, the Cu-Ag microstructure covering s-Fe⁰-(Cu-Ag) has been characterized in detail. Furthermore, the electron spin resonance (ESR) spectra have been applied to investigate simultaneous generation of reactive oxygen species (ROS_s) and hydrogen radicals ([H]_abs) over s-Fe⁰-(Cu-Ag). To our best knowledge, this is the first study reporting the enhanced bifunctional catalysis of s-Fe⁰-(Cu-Ag)/O₂ for simultaneous degradation of RhB and PNP.

迄今为止，基于零价铁 (ZVI) 的技术遇到了阻碍，具有挑战性的同时解毒具有强吸电子硝基的难熔罗丹明 B (RhB) 和对硝基苯酚 (PNP)。在本研究中，我们合成了 Ag-Cu 装饰海绵铁 (s-Fe ⁰ ) 基三金属，用于同时降解 RhB 和 PNP。结果表明，Cu-Ag 共掺杂 s-Fe ⁰ (s-Fe ⁰ -(Cu-Ag)) 实现了大约 最大程度去除 90.6% 的 RhB；优选的s-Fe ⁰ -(5  wt %Cu-1 wt%Ag) 以 6 L/min 的曝气速率在 10 次循环测试中同时降低 RhB 和 PNP；非曝气过程完全减少了 PNP 以及仅约 去除 23.9% 的 RhB。此外，已经详细表征了覆盖s-Fe ^{0 -(Cu-Ag)的Cu-Ag微结构。}此外，电子自旋共振 (ESR) 光谱已被应用于研究在 s-Fe ⁰ -(Cu-Ag)上同时产生活性氧 (ROS _s ) 和氢自由基 ([H] _{abs )。}据我们所知，这是第一项报告增强的 s-Fe ⁰ -(Cu-Ag)/O ₂双功能催化同时降解 RhB 和 PNP 的研究。