Postsynthetic Functionalization of Three-Dimensional Covalent Organic Frameworks for Selective Extraction of Lanthanide Ions

被引：327

作者：

Lu, Qiuyu ^{[1
]}

Ma, Yunchao ^{[1
]}

Li, Hui ^{[1
]}

Guan, Xinyu ^{[1
]}

Yusran, Yusran ^{[1
]}

Xue, Ming ^{[1
]}

Fang, Qianrong ^{[1
]}

Yan, Yushan ^{[2
]}

Qiu, Shilun ^{[1
]}

Valtchev, Valentin ^{[3
]}

机构：

[1] Jilin Univ, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Jilin, Peoples R China

[2] Univ Delaware, Ctr Catalyt Sci & Technol, Dept Chem & Biomol Engn, Newark, DE 19716 USA

[3] Normandie Univ, Lab Catalyse & Spectrochim, CNRS, UNICAEN,ENSICAEN, 6 Marechal Juin, F-14050 Caen, France

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2018年 / 57卷 / 21期

基金：

中国国家自然科学基金;

关键词：

cations; covalent organic frameworks; functionalization; porous materials; X-ray diffraction; HETEROGENEOUS ASYMMETRIC CATALYSIS; CARBON-DIOXIDE; CRYSTALLINE; HYDROGEN; STORAGE; CONSTRUCTION; EFFICIENT; GENERATION; STABILITY; SORPTION;

D O I：

10.1002/anie.201712246

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Chemical functionalization of covalent organic frameworks (COFs) is critical for tuning their properties and broadening their potential applications. However, the introduction of functional groups, especially to three-dimensional (3D) COFs, still remains largely unexplored. Reported here is a general strategy for generating a 3D carboxy-functionalized COF through postsynthetic modification of a hydroxy-functionalized COF, and for the first time exploration of the 3D carboxy-functionalized COF in the selective extraction of lanthanide ions. The obtained COF shows high crystallinity, good chemical stability, and large specific surface area. Furthermore, the carboxy-functionalized COF displays high metal loading capacities together with excellent adsorption selectivity for Nd3+ over Sr2+ and Fe3+ as confirmed by the Langmuir adsorption isotherms and ideal adsorbed solution theory (IAST) calculations. This study not only provides a strategy for versatile functionalization of 3D COFs, but also opens a way to their use in environmentally related applications.

引用

页码：6042 / 6048

页数：7