The photocatalytic degradation of organic micropollutant naproxen (NPX) was evaluated under solar light using Ag/AgCl–polyaniline (Ag/AgCl–PANI) photocatalyst. The degradation experiments were monitored using ultra-performance liquid chromatography (UPLC) coupled with electrospray ionization and tandem mass spectrometry. High stability and high photocatalytic degradation rate with a first-order kinetics behavior of NPX were observed. The degradation rate increases with increasing the photocatalyst dose and decreases with increasing the initial concentration of NPX. Besides, the highest photocatalytic activity of Ag/AgCl–PANI(5%) towards the removal of NPX was in basic media (pH 11). However, the complete mineralization of NPX needed more time than that of its photodegradation indicating the presence of NPX derived byproduct. The transformation products were identified by gas chromatography-mass spectrometry. The oxidizing species, h⁺ and \({\text{O}}_{2}^{{\bullet - }}\), caused electron transfer oxidation process and resulted in two different reaction pathways.

使用 Ag/AgCl-聚苯胺 (Ag/AgCl-PANI) 光催化剂在太阳光下评估有机微污染物萘普生 (NPX) 的光催化降解。使用超高效液相色谱 (UPLC) 与电喷雾电离和串联质谱联用监测降解实验。观察到NPX具有一级动力学行为的高稳定性和高光催化降解率。降解率随着光催化剂剂量的增加而增加，随着NPX初始浓度的增加而降低。此外，Ag/AgCl-PANI（5%）去除 NPX 的最高光催化活性是在碱性介质（pH 11）中。然而，NPX 的完全矿化比其光降解需要更多的时间，这表明存在 NPX 衍生的副产品。通过气相色谱-质谱法鉴定转化产物。氧化性物质，h ⁺和\({\text{O}}_{2}^{{\bullet - }}\)，引起电子转移氧化过程并导致两种不同的反应途径。