Al-Salem Asmaa S, Nayl AbdEIAziz A, Alshammari Mutairah S, M Ahmed Ismail
Department of Nursing, Northern College of Nursing, Arar 73311, Saudi Arabia.
Department of Chemistry, College of Science, Jouf University, Sakaka, Aljouf 72341, Saudi Arabia.
ACS Omega. 2024 Jul 15;9(29):32175-32184. doi: 10.1021/acsomega.4c04742. eCollection 2024 Jul 23.
This work reports the performances of the magnetic chitosan@graphene oxide composite (MCh@GO) for the sorption of Nd(III) from aqueous medium. The prepared composite was synthesized by a coprecipitation method and then examined by FT-IR, XRD, SEM, and TGA. XRD analysis proved physical interactions between magnetic chitosan and graphene oxide through (inter- and intramolecular H-bonding and peptide bonding). TGA data approved the thermal stability of the prepared MCh@GO nanocomposite over their constituents. The optimum pH for the sorption process was 4.5. The Langmuir model and PSO fitted the experimental data. The adsorption process was found to be endothermic and spontaneous with a of 56.6 mg g. Indeed, the MCh@GO composite proved to be an excellent adsorbent for the purification, remediation, and separation of Nd due to its promising properties.
这项工作报道了磁性壳聚糖@氧化石墨烯复合材料（MCh@GO）从水介质中吸附Nd(III)的性能。通过共沉淀法合成了制备的复合材料，然后用傅里叶变换红外光谱（FT-IR）、X射线衍射（XRD）、扫描电子显微镜（SEM）和热重分析（TGA）对其进行了表征。XRD分析证明了磁性壳聚糖与氧化石墨烯之间通过（分子间和分子内氢键以及肽键）存在物理相互作用。TGA数据证实了制备的MCh@GO纳米复合材料相对于其成分具有热稳定性。吸附过程的最佳pH值为4.5。Langmuir模型和粒子群优化算法（PSO）拟合了实验数据。发现吸附过程是吸热且自发的，吸附量为56.6 mg/g。事实上，由于其具有良好的性能，MCh@GO复合材料被证明是用于Nd的净化、修复和分离的优良吸附剂。
