Abstract In this study, the Ag@CuO nanocomposite was prepared by a simple chemical reaction, and successfully used as a persulfate activator in the oxidative degradation of Rhodamine B (RHB). The micromorphology, crystal structure, elemental composition and content, and chemical state of Ag@CuO nanocomposite were characterized by high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), X-ray energy spectrum analysis (EDS), inductively coupled plasma-atomic emission spectrometry (ICP-AES), and X-ray photoelectron spectroscopy (XPS), respectively. The activator possesses a minor particle agglomeration. The degradation efficiency and degradation kinetics of RHB were investigated by different catalysts activated persulfate and at different temperatures. The results revealed that the Ag@CuO nanocomposite has better catalytic activity for the activation of persulfate potassium to degrade RHB than the contrastive activators. The oxidative degradation of RHB is a pseudo-first order reaction, and the higher temperature is benefit for the RHB degradation. The Ag@CuO nanocomposite presented a long-term stability through the cycle experiment in the degradation of RHB.

中文翻译：

---

Ag@CuO纳米复合材料活化过硫酸盐氧化降解罗丹明B

摘要 本研究通过简单的化学反应制备了Ag@CuO纳米复合材料，并成功用作氧化降解罗丹明B（RHB）的过硫酸盐活化剂。采用高分辨透射电子显微镜（HRTEM）、X射线衍射（XRD）、X射线能谱分析（EDS）、电感式对Ag@CuO纳米复合材料的微观形貌、晶体结构、元素组成和含量以及化学状态进行表征。耦合等离子体原子发射光谱法 (ICP-AES) 和 X 射线光电子能谱法 (XPS)，分别。活化剂具有小颗粒团聚。通过不同催化剂活化的过硫酸盐和在不同温度下研究了 RHB 的降解效率和降解动力学。结果表明，Ag@CuO纳米复合材料在活化过硫酸钾降解RHB方面比对比活化剂具有更好的催化活性。RHB的氧化降解为准一级反应，较高的温度有利于RHB的降解。Ag@CuO纳米复合材料在降解RHB的循环实验中表现出长期稳定性。