N-doped TiO₂ (NT) was proven to be efficient for monuron decay via peroxymonosulfate (PMS) activation under visible LED (Vis LED). The activation mechanism revealed that OH and SO₄⁻ have a critical role in the monuron decay with a ratio of about 3 to 1, respectively; and the holes at the catalyst surface are the main precursors in forming SO₄⁻. The NT/PMS/Vis LED hybrid process was found to be an effective approach under a wide solution pH range of 2.5–9.2 (>80% decay). Interestingly, the highest efficiency was observed at pH 9.2 due to the contribution of PMS/Vis LED process by generating both OH and SO₄⁻ at alkaline pH. However, the decay rate of monuron was inhibited at pH 11.6 due to the dissociation of OH into O⁻ and the electrostatic repulsion among reagents. The process was also suitable for ion-rich wastewater since no significant reduction in the performance was induced in the presence of high concentrations of inorganic anions. Furthermore, the process was proven to be a promising approach for mineralization of monuron and its intermediates. Twenty reaction intermediates were detected and five of them are newly reported. A novel mathematical model was established based on reaction intermediates using a parallel-serial-irreversible reaction approach, which is helpful in predicting the detoxification extent of hazardous intermediates.

事实证明，在可见光LED（Vis LED）下，过氧化一硫酸盐（PMS）活化能有效地抑制N掺杂的TiO ₂（NT）对单宁的衰减。该激活机构显示，OH和SO ₄ ^-具有在灭草隆衰变关键作用具有分别为约3比1，一个比率; 以及在催化剂表面上的孔是在形成SO的主要前体₄ ^- 。发现NT / PMS / Vis LED混合工艺在2.5-9.2的宽溶液pH范围（衰减> 80％）下是一种有效的方法。有趣的是，由于PMS / Vis LED工艺通过产生OH和SO _4-的贡献，在pH 9.2时观察到了最高效率^。在碱性pH下。然而，灭草隆的衰减率在pH 11.6被抑制由于解离OH制成O ^-和试剂之间的静电排斥。该方法也适用于富含离子的废水，因为在存在高浓度的无机阴离子的情况下，不会导致性能显着降低。此外，该方法被证明是一种用于蒙罗隆及其中间体矿化的有前途的方法。检测到二十种反应中间体，新报告了其中五种。建立了基于反应串联不可逆反应方法的反应中间体新的数学模型，有助于预测危险中间体的解毒程度。