Abstract In this study, magnetic nanoparticles (MNPs) modified with poly amidoamine (PAMAM) dendrimers - by adding methyl acrylate and ethylenediamine continuously till 10th generation- which further anchored to benzaldehyde ligand through polymeric bonding and studied as a novel method for synthesizing a nano sorbent for removing naphthalene (NAP) from aqueous environments. Synthesized nanopolymer was characterized by Fourier transform infrared spectroscopy (FTIR), Field-Emission Scanning Electron Microscopy (FE-SEM) equipped with EDS, X-ray Diffraction (XRD), Vibrating Sample Magnetometry (VSM), thermal gravimetric analysis (TGA). Based on the obtained analysis results synthesized average nanocomposite diameter is 25–55 nm. In batch experiments, operative parameters in adsorption process like pH, sorbent dosage, contact time and initial concentration of NAP have investigated, and maximum adsorption for NAP by sorbent in optimal adsorption conditions examined. Therefore, synthesized nanocomposite used for removing NAP from real water samples and industrial wastewater containing complex matrices and all of them analyzed by Gas Chromatography-Mass spectrometry (GC-MS). The NAP removal efficiency of 93–100% obtained from water in the river, sea and industrial waste. Also, fitting the adsorption process with various isotherm models and kinetic studies designated that the equilibrium data follow from the Langmuir model (R2 = 0.9957) and adsorption kinetic from the pseudo-second-order model (R2 = 0.9999). Maximum adsorption capacity for sorbent was qmax = 101 mg g−1. As a result, synthesized magnetic dendrimers have high adsorption capacity without no environmental pH adjustment which is recyclable for four-times as an efficient sorbent used for removing NAP from aqueous solutions.

中文翻译：

---

用于从水溶液中去除萘的改性磁性纳米粒子上高支化可回收 PAMAM 树枝状聚合物的制备和表征

摘要 在本研究中，使用聚酰胺胺 (PAMAM) 树枝状大分子修饰的磁性纳米粒子 (MNPs) - 通过连续添加丙烯酸甲酯和乙二胺直至第 10 代 - 通过聚合物键进一步锚定苯甲醛配体，并作为合成纳米吸附剂的新方法进行研究。用于从水性环境中去除萘 (NAP)。合成的纳米聚合物通过傅里叶变换红外光谱 (FTIR)、配备 EDS 的场发射扫描电子显微镜 (FE-SEM)、X 射线衍射 (XRD)、振动样品磁力法 (VSM)、热重分析 (TGA) 进行表征。根据获得的分析结果合成的平均纳米复合材料直径为 25-55 nm。在批量实验中，吸附过程中的操作参数如 pH 值、吸附剂用量、已经研究了 NAP 的接触时间和初始浓度，并研究了在最佳吸附条件下吸附剂对 NAP 的最大吸附。因此，合成的纳米复合材料用于从含有复杂基质的实际水样和工业废水中去除 NAP，并通过气相色谱-质谱 (GC-MS) 进行分析。从河流、海洋和工业废物中的水获得 93-100% 的 NAP 去除效率。此外，将吸附过程与各种等温线模型和动力学研究相匹配，表明平衡数据来自 Langmuir 模型（R2 = 0.9957），吸附动力学来自伪二级模型（R2 = 0.9999）。吸附剂的最大吸附容量为 qmax = 101 mg g-1。因此，