通过液体中的激光烧蚀，利用聚乙烯醇/AlO纳米复合膜去除镍（II）离子。

Removal of Ni(II) Ions by Poly(Vinyl Alcohol)/AlO Nanocomposite Film via Laser Ablation in Liquid.

作者信息

Alkallas Fatemah H, Ahmed Hoda A, Alrebdi Tahani A, Pashameah Rami Adel, Alrefaee Salhah H, Alsubhe Emaan, Trabelsi Amira Ben Gouider, Mostafa Ayman M, Mwafy Eman A

机构信息

Department of Physics, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia.

Department of Chemistry, Faculty of Science, Cairo University, Cairo 12613, Egypt.

出版信息

Membranes (Basel). 2022 Jun 27;12(7):660. doi: 10.3390/membranes12070660.

AlO-poly(vinyl alcohol) nanocomposite (AlO-PVA nanocomposite) was generated in a single step using an -friendly method based on the pulsed laser ablation approach immersed in PVA solution to be applicable for the removal of Ni(II) from aqueous solution, followed by making a physicochemical characterization by SEM, XRD, FT-IR, and EDX. After that, the effect of adsorption parameters, such as pH, contact time, initial concentration of Ni(II), and medium temperature, were investigated for removal Ni(II) ions. The results showed that the adsorption was increased when pH was 5.3, and the process was initially relatively quick, with maximum adsorption detected within 90 min of contact time with the endothermic sorption process. Moreover, the pseudo-second-order rate kinetics (k = 9.9 × 10 g mg min) exhibited greater agreement than that of the pseudo-first-order. For that, the Ni(II) was effectively collected by AlO-PVA nanocomposite prepared by an -friendly and simple method for the production of clean water to protect public health.

采用基于脉冲激光烧蚀法的环保方法，将其浸入聚乙烯醇（PVA）溶液中一步制备出氧化铝-聚乙烯醇纳米复合材料（AlO-PVA纳米复合材料），该材料可用于从水溶液中去除镍（II），随后通过扫描电子显微镜（SEM）、X射线衍射仪（XRD）、傅里叶变换红外光谱仪（FT-IR）和能谱仪（EDX）对其进行物理化学表征。之后，研究了诸如pH值、接触时间、镍（II）初始浓度和介质温度等吸附参数对去除镍（II）离子的影响。结果表明，当pH值为5.3时吸附量增加，该过程最初相对较快，在接触90分钟内检测到最大吸附量，且吸附过程为吸热过程。此外，准二级速率动力学（k = 9.9×10 g mg⁻¹ min⁻¹）比准一级动力学表现出更好的拟合度。因此，通过一种环保且简单的方法制备的AlO-PVA纳米复合材料能够有效收集镍（II），从而生产清洁水以保障公众健康。