Abstract We herein have developed a facile, cost-effective, microwave method for the synthesis of copper nanoparticles using different counter ions: sulfate, chloride, acetate, and nitrate. The preparation was performed using ethylene glycol and sodium hypophosphite as a reaction medium and reducing agent, respectively. FT-IR, XRD, FE-SEM, EDS, XPS, DRS, and TEM techniques were used for characterization of the products. The results exhibited that the counter ions have a significant influence on the products. Copper sulfate and copper chloride salts produced the purest copper nanoparticles with 45 and 48 nm average particle size, respectively. All copper nanostructures showed high photocatalytic activity (95.0–98.0 %) for the degradation of safranin (Saf) dye under UV irradiation in 70 min. The apparent first-order rate constant (kapp) was 0.0446 min−1 for the Cu nanoparticles prepared using copper sulfate (CuSNPS). The copper product showed good reusability, stability, and applicability for the removal of Saf dye from aqueous solutions.

中文翻译：

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利用不同反离子的微波辅助制备铜纳米粒子：一种有效的光催化剂，用于从水介质中光催化降解番红染料

摘要 我们在此开发了一种简便、经济高效的微波方法，用于使用不同的抗衡离子：硫酸盐、氯化物、醋酸盐和硝酸盐合成铜纳米粒子。分别使用乙二醇和次磷酸钠作为反应介质和还原剂进行制备。FT-IR、XRD、FE-SEM、EDS、XPS、DRS 和 TEM 技术用于表征产品。结果表明，反离子对产物有显着影响。硫酸铜和氯化铜盐分别产生平均粒径为 45 和 48 纳米的最纯铜纳米颗粒。所有铜纳米结构在紫外线照射下 70 分钟内对番红素 (Saf) 染料的降解均表现出高光催化活性 (95.0-98.0%)。表观一级速率常数 (kapp) 为 0。使用硫酸铜 (CuSNPS) 制备的 Cu 纳米颗粒为 0446 min-1。铜产品显示出良好的可重复使用性、稳定性以及从水溶液中去除 Saf 染料的适用性。