Filipowiak Kinga, Dudzińska Patrycja, Wieszczycka Karolina, Buchwald Tomasz, Nowicki Marek, Lewandowska Aneta, Marcinkowska Agnieszka
Institute of Chemical Technology and Engineering, Poznan University of Technology, 60-965 Poznan, Poland.
Institute of Materials Research and Quantum Engineering, Poznan University of Technology, 60-965 Poznan, Poland.
Materials (Basel). 2021 Sep 2;14(17):5008. doi: 10.3390/ma14175008.
In this paper, the potential of novel polymer sorbents with the imprinted IL-functional group for the removal of Cu(II), Cd(II), and Zn(II) from aqueous solutions was investigated by batch mode. The sorbents were fabricated by direct reaction of the prepared polymer matrix (poly(vinylbenzyl chloride-divinylbenzene), VBC, and poly(vinylbenzyl bromide-divinylbenzene), VBBr) with 1-(3- or 4-pyridyl)undecan-1-one and oxime of 1-(3- or 4-pyridyl)undecan-1-one. The Fourier Transform Infrared Spectroscopy (FT-IR), Raman Spectroscopy (Raman), Thermogravimetric Analysis (TG), Differential Scanning Calorimetry (DSC), and Scanning Electron Microscopy (SEM) techniques were used to show functionality and stability of the sorbents. The materials were also characterized by contact-angle goniometry, X-rayphotoelectron spectroscopy (XPS), and Zeta potential analysis. The removal of Cd(II), Cu(II), and Zn(II) was monitored and optimized under the influence of several operational controlling conditions and factors such as pH, shaking time, temperature, initial metal ions concentration, and counter-ions at the functional group. The results obtained confirmed the very high potential of the sorbents; however, the properties depend on the structure of the functional group. The tested sorbents showed fast kinetics, significant capacity at 25 °C (84 mg/g for the Zn(II) sorption with VBC-Ox4.10, 63 mg/g for the Cd(II) sorption with VBBr-Ox3.10, and 69 mg/g for the Cu(II) sorption with VBC-K3.10), and temperature dependence (even 100% increase in capacity values at 45 °C). The selected sorbent can be regenerated without a significant decrease in the metal removal efficiency.
本文采用分批模式研究了具有印迹离子液体功能基团的新型聚合物吸附剂从水溶液中去除铜（II）、镉（II）和锌（II）的潜力。吸附剂是通过制备的聚合物基质（聚（乙烯基苄基氯 - 二乙烯基苯），VBC，和聚（乙烯基苄基溴 - 二乙烯基苯），VBBr）与1 - （3 - 或4 - 吡啶基）十一烷 - 1 - 酮和1 - （3 - 或4 - 吡啶基）十一烷 - 1 - 酮肟直接反应制备而成。利用傅里叶变换红外光谱（FT - IR）、拉曼光谱（Raman）、热重分析（TG）、差示扫描量热法（DSC）和扫描电子显微镜（SEM）技术来展示吸附剂的功能和稳定性。这些材料还通过接触角测角法、X射线光电子能谱（XPS）和Zeta电位分析进行了表征。在pH值、振荡时间、温度、初始金属离子浓度以及功能基团处的抗衡离子等几个操作控制条件和因素的影响下，对镉（II）、铜（II）和锌（II）的去除进行了监测和优化。所得结果证实了吸附剂具有很高的潜力；然而，其性能取决于功能基团的结构。测试的吸附剂显示出快速动力学，在25℃时具有显著的吸附容量（VBC - Ox4.10对锌（II）的吸附为84 mg/g，VBBr - Ox3.10对镉（II）的吸附为63 mg/g，VBC - K3.10对铜（II）的吸附为69 mg/g），并且具有温度依赖性（在45℃时容量值甚至增加100%）。所选吸附剂可以再生，而金属去除效率不会显著降低。
