Department of Chemistry, Al-Qalam University Katsina, Katsina 2137, PMB, Nigeria.
Department of Fundamental and Applied Science, Universiti Teknologi PETRONAS, Seri Iskandar 32610, Perak, Malaysia.
Molecules. 2022 Jul 25;27(15):4746. doi: 10.3390/molecules27154746.
Successful synthesis of ZnO-chitosan nanocomposites was conducted for the removal of methylene blue from an aqueous medium. Remarkable performance of the nanocomposites was demonstrated for the effective uptake of the dye, thereby achieving 83.77, 93.78 and 97.93 mg g for the chitosan, 5 wt.% ZnO-Chitosan and 10 wt.% ZnO-Chitosan, respectively. The corresponding adsorption efficiency was 88.77, 93.78 and 97.95 for the chitosan, 5 wt.% ZnO-Chitosan and 10 wt.% ZnO-Chitosan, respectively. Upon regeneration, good reusability of the nanocomposites was manifested for the continuous removal of the dye up to six consecutive cycles. The adsorption process was kinetically described by a pseudo-first order model, while the isotherms were best fitted by the Langmuir model.
成功合成了 ZnO-壳聚糖纳米复合材料，用于从水溶液中去除亚甲基蓝。纳米复合材料表现出了显著的性能，能够有效地吸附染料，因此壳聚糖、5wt.% ZnO-壳聚糖和 10wt.% ZnO-壳聚糖的吸附量分别达到 83.77、93.78 和 97.93mg/g。相应的吸附效率分别为 88.77、93.78 和 97.95。经过再生，纳米复合材料表现出良好的可重复使用性，可连续去除染料达六次循环。吸附过程动力学符合准一级模型，而等温线则最好符合朗缪尔模型。
