Department of Chemistry, Faculty of Education, Dicle University, 21280 Diyarbakir, Turkey.
Department of Chemistry, Faculty of Education, Dicle University, 21280 Diyarbakir, Turkey; Vocational High School of Health Services, Mardin Artuklu University, 47100 Mardin, Turkey.
Ecotoxicol Environ Saf. 2018 Oct 30;162:245-252. doi: 10.1016/j.ecoenv.2018.06.066. Epub 2018 Jul 11.
Click chemistry refers to a group of reactions that are fast, simple to use, easy to purify, versatile, regiospecific, and give high product yields. Therefore, a novel, efficient magnetic nano-sorbent based on N-methyl-D-glucamine attached to magnetic nanoparticles was prepared using click coupling method. Its boron sorption capacity was compared with N-methyl-D-glucamine direct attached nano-sorbent. The characterization of the magnetic sorbents was investigated by several techniques such as X-ray diffraction, scanning electron microscope, transmission electron microscope, dynamic light scattering, thermogravimetric analysis, Fourier transform infrared spectrophotometer, and vibrating sample magnetometer. The boron sorption capacity of sorbents was compared by studying various essential factors influencing the sorption, like sorbate concentration, sorbents dosage, pH of the solution, and contact time. Langmuir and Freundlich and Dubinin-Radushkevich adsorption isotherms models were applied. Percent removal and sorption capacities efficiencies of sorbents obtained with direct and click coupling are found to be 49.5%, 98.7% and 6.68 mg/g, 13.44 mg/g respectively. Both sorbents have been found to be compatible with Langmuir isotherm, and the boron sorption kinetics conforms to the pseudo second order kinetics. The reusability study of sorbents was carried out five times for boron sorption and desorption.
点击化学是指一组快速、使用简便、易于纯化、多功能、区域选择性高、产物收率高的反应。因此，采用点击偶联法制备了一种新型、高效的磁性纳米吸附剂，该吸附剂是通过将 N-甲基-D-葡糖胺连接到磁性纳米颗粒上制备的。将其硼吸附容量与 N-甲基-D-葡糖胺直接连接的纳米吸附剂进行了比较。通过 X 射线衍射、扫描电子显微镜、透射电子显微镜、动态光散射、热重分析、傅里叶变换红外光谱仪和振动样品磁强计等多种技术对磁性吸附剂进行了表征。通过研究影响吸附的各种重要因素，如吸附质浓度、吸附剂用量、溶液 pH 值和接触时间，比较了吸附剂的硼吸附容量。应用了 Langmuir、Freundlich 和 Dubinin-Radushkevich 吸附等温线模型。直接和点击偶联得到的吸附剂的去除率和吸附容量效率分别为 49.5%、98.7%和 6.68mg/g、13.44mg/g。两种吸附剂均与 Langmuir 等温线相匹配，硼吸附动力学符合准二级动力学。对吸附和脱附进行了五次硼吸附的可重复使用性研究。
