Abstract

In this paper, environment friendly adsorbent material was successfully synthesized by plant (Euphorbia Hirta) mediated green synthesis of copper oxide nanoparticles (CuO NPs), which was further incorporated into mixed matrices of cellulose acetate (CA) and polyether sulfone (PES) using the phase inversion method, and the efficiency of adsorbent materials was compared with the efficiency of those with incorporated CuO NPs and without CuO NPs in CA/PES polymer membrane. XRD, FTIR, FESEM-EDX, BET, contact angle and adsorption studies have characterized the prepared membrane. The structure, resulting from the formation of hydrogen bonds between the components were suggested by the FTIR and XRD analysis. The resulting contact angle measurements explain the essence of the membrane’s hydrophilicity. According to the resulting adsorption studies there is no adsorption ability against MB for the membrane without CuO NPs, but the incorporation of CuO NPs to the polymer membrane resulted in superior performance (removal efficiency 99%) in the removal of MB dye from water under room temperature. The most effective pH, temperature and initial dye concentration in adsorption process were found to be pH 7, 273 K and 2.5 × 10^–5 M respectively. These results revealed that due to its adsorption properties prepared CA/PES@CuO membrane is a promising candidate for the dye removal application. Moreover, this work is expected to extend the scope of various applications of these systems.

中文翻译：

---

绿色合成修饰成 CA/PES 聚合物的 CuO 纳米颗粒作为一种有效的染料吸附剂

摘要

本文利用植物（Euphorbia Hirta）成功合成了环保型吸附材料。) 介导氧化铜纳米粒子 (CuO NPs) 的绿色合成，使用转相法将其进一步掺入醋酸纤维素 (CA) 和聚醚砜 (PES) 的混合基质中，并将吸附材料的效率与那些在 CA/PES 聚合物膜中掺入 CuO NPs 和没有 CuO NPs 的那些。XRD、FTIR、FESEM-EDX、BET、接触角和吸附研究表征了制备的膜。FTIR 和 XRD 分析表明，由于组分之间形成氢键而导致的结构。由此产生的接触角测量结果解释了膜亲水性的本质。根据由此产生的吸附研究，没有 CuO NPs 的膜对 MB 没有吸附能力，但是，在室温下，将 CuO NPs 掺入到聚合物膜中后，在从水中去除 MB 染料方面具有优异的性能（去除效率为 99%）。发现吸附过程中最有效的 pH、温度和初始染料浓度为 pH 7、273 K 和 2.5 × 10^–5 M 分别。这些结果表明，由于其吸附性能，制备的 CA/PES@CuO 膜是染料去除应用的有希望的候选者。此外，这项工作有望扩展这些系统的各种应用范围。