This study reports the fabrication of ZnFe-layered double hydroxides with sulfate-intercalated anion (ZnFe-SO₄-LDH) modified with graphene oxide (GO) by chemical co-precipitation method. They were then coated on the glass substrates (denoted as ZnFe-LDH/GO/GS). The XRD, SEM, EDX, X-ray Dot-mapping, FTIR, AFM, UV–Vis DRS, and PL analyses were used for the characterization of the as-synthesized sample. The photocatalytic implementation of the as-prepared photocatalyst was scrutinized for the degradation of phenazopyridine hydrochloride (PhP) from the solution under visible light irradiation. The prepared photocatalyst showed photocatalytic performance of elimination PhP, the degraded rate of pollutant could reach 60.01% in 150 min of photocatalysis process under the optimum conditions: initial PhP concentration of 15 mg/L, pH of 8 (natural pH), and 3 photocatalysts plates. The addition of 1 mmol/L of potassium persulfate (k₂S₂O₈) caused the degradation efficiency of 93.95% within the 150 min of photocatalytic process. Trapping experiments indicated the influence order of O₂^−· > OH > h⁺ for the ROSs present in decomposition. The transformation of five intermediates of PhP produced in the photocatalytic degradation process was identified by the GC–MS technique. 60% COD removal efficiency was achieved after 300 min of photocatalytic reaction confirming mineralization of the PhP solution. Finally, a reusability test of ZnFe-LDH/GO/GS photocatalyst in the PhP degradation revealed that almost 12% drop occurred after five successive cycles.

这项研究报告了用硫酸盐嵌入的阴离子（ZnFe-SO ₄制备ZnFe层状双氢氧化物-LDH）通过化学共沉淀法用氧化石墨烯（GO）改性。然后将它们涂覆在玻璃基板（表示为ZnFe-LDH / GO / GS）上。XRD，SEM，EDX，X射线点映射，FTIR，AFM，UV-Vis DRS和PL分析用于表征合成样品。仔细检查制备的光催化剂的光催化实施方案，以在可见光照射下从溶液中降解盐酸苯并吡啶。所制备的光催化剂具有去除PhP的光催化性能，在最佳条件下：初始PhP浓度为15 mg / L，pH为8（自然pH），3种光催化剂，在最佳条件下，在150min的光催化降解过程中污染物的降解率可达到60.01％。盘子。加入1 mmol / L过硫酸钾（k ₂S ₂ O ₈）在150分钟的光催化过程中引起了93.95％的降解效率。诱捕实验表明，O _2- ^·  >  OH> h ⁺对分解中存在的ROS的影响顺序。通过GC-MS技术鉴定了光催化降解过程中产生的五种PhP中间体的转化。300分钟的光催化反应确认PhP溶液矿化后，COD去除效率达到60％。最后，ZnFe-LDH / GO / GS光催化剂在PhP降解中的可重复使用性测试显示，在连续五个循环后发生了近12％的下降。