Heterogeneous Fenton dominated by ·OH is limited in its application, as pre-acidification is required to maximize the generation amount and redox potential of ·OH. It is thus featured to consume resources and generate pollutants. In this study, both CuS/H₂O₂ and Cu₂S/H₂O₂ are found to show better performances under close-to-neutral condition (pH 5.0 to 9.0) than acidic condition (pH 3.0) when degrading a model contaminant, sulfamethazine (SMZ), because ·OH does not play a major role in both systems. The Cu valence-dependent catalytic mechanisms are responsible for the varied kinetics between CuS/H₂O₂ and Cu₂S/H₂O₂. In CuS/H₂O₂, Cu(III) and ¹O₂ contribute to the SMZ degradation, and their contributions are pH-dependent. In Cu₂S/H₂O₂, Cu(III) is responsible for the degradation regardless of the pH. Both systems with optimal performances under neutral condition are advantageous as pre-acidification can be avoided. In addition, air sparging induces additional 16% SMZ degradation in Cu₂S/H₂O₂ under acidic condition, because the sparged O₂ reacts with dissolved Cu(I). The more O₂ reacts with the dissolved Cu(I), the less generated Cu(III) is ineffectively depleted. Air sparging is readily applicable to different operations, thus its combination with Cu₂S/H₂O₂ potentially benefits the development of environmentally-friendly treatment process for industrial wastewater.

·OH占主导地位的非均质Fenton的应用受到限制，因为需要进行预酸化处理才能最大化·OH的生成量和氧化还原电位。因此，它的特点是消耗资源并产生污染物。在这项研究中，当模型退化时，发现CuS / H ₂ O ₂和Cu ₂ S / H ₂ O ₂在接近中性条件（pH 5.0至9.0）下均显示出比酸性条件（pH 3.0）更好的性能。污染物是磺胺二甲嘧啶（SMZ），因为·OH在这两个系统中都不起作用。Cu价依赖的催化机制负责CuS / H ₂ O ₂和Cu ₂ S / H ₂之间的动力学变化。O ₂。在CuS / H ₂ O _2中，Cu（III）和¹ O ₂有助于SMZ降解，它们的作用取决于pH。在Cu ₂ S / H ₂ O _2中，无论pH如何，Cu（III）都是导致降解的原因。在中性条件下具有最佳性能的两个系统都是有利的，因为可以避免预酸化。另外，在酸性条件下，空气喷射会在Cu ₂ S / H ₂ O _2中引起16％的SMZ降解，因为喷射的O ₂与溶解的Cu（I）反应。越O ₂与溶解的Cu（I）反应，生成较少的Cu（III）无效耗尽。空气喷射很容易适用于不同的操作，因此将其与Cu ₂ S / H ₂ O _{2结合可以}潜在地促进工业废水的环保处理工艺的发展。