The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China.
Anal Methods. 2020 Oct 7;12(37):4534-4540. doi: 10.1039/d0ay01249a. Epub 2020 Sep 3.
Hybrid nanocomposites based on UiO-66-NH and carboxyl-functionalized carbon nanotubes were developed in this study via different synthetic pathways. Combining them through interfacial in situ growth was beneficial for the better dispersity of UiO-66-NH in the CNTs@UiO-66-NH composite than physically mixing CNTs/UiO-66-NH and chemically bonded CNTs-CONH-UiO-66. Coordination between carboxyl groups of CNTs and zirconium ions resulted in the interfacial growth of UiO-66-NH on CNTs. Adsorption experiments showed that CNTs@UiO-66-NH exhibited the highest adsorption efficiency towards methyl orange (MO). The adsorption capacity of CNTs@UiO-66-NH was up to 392 mg g, which was 77.45% and 201.5% higher than those of CNTs-CONH-UiO-66 and CNTs/UiO-66-NH respectively. Moreover, CNTs@UiO-66-NH could selectively adsorb MO from the MO/MB mixture.
本研究通过不同的合成途径开发了基于 UiO-66-NH 和羧基功能化碳纳米管的杂化纳米复合材料。通过界面原位生长将它们结合在一起有利于 UiO-66-NH 在 CNTs@UiO-66-NH 复合材料中的分散性优于物理混合 CNTs/UiO-66-NH 和化学键合的 CNTs-CONH-UiO-66。CNTs 上的羧基基团与锆离子之间的配位导致 UiO-66-NH 在 CNTs 上的界面生长。吸附实验表明，CNTs@UiO-66-NH 对甲基橙（MO）表现出最高的吸附效率。CNTs@UiO-66-NH 的吸附容量高达 392 mg g，分别比 CNTs-CONH-UiO-66 和 CNTs/UiO-66-NH 高 77.45%和 201.5%。此外，CNTs@UiO-66-NH 可以从 MO/MB 混合物中选择性吸附 MO。
