Metal-organic frameworks (MOFs) have attracted much attention over the last two decades because of their unique properties including high surface area and porosity. The high versatility and remarkable properties of MOFs have rendered them useful candidates in a wide range of applications, such as gas separation, catalysis, drug delivery, charge transport, environmental remediation and so on.  <br/>On the other hand, water pollution has been a major global challenge and MOFs represent a relatively new strategy for the treatment and remediation of aquatic pollutants. Adsorptive removal based on MOFs is an attractive protocol for water remediation because of its simple operation, efficiency and reasonable cost. The readily-modifiable structures of MOFs have also allowed them to be adaptive to different pollutants. Organic dyes are amongst the most common type of hazardous aquatic pollutants and are often employed as model compounds for the investigation of the adsorption properties of MOFs.  Herein, we report a series of mesoporous copper(II) metal-organic frameworks that exhibit rich adsorption properties towards artificial dyes of different sizes. Using tritopic and ditopic organic linkers derived from the same aromatic backbone, copper(II) MOFs with different three-dimensional structures have been successfully obtained and their single crystal structures have been determined by X-ray crystallography. While cationic dyes were directly adsorbed by the MOFs, anionic dyes could be degraded via a photo-Fenton-like reaction catalyzed by the MOFs under the irradiation of visible light. Detailed kinetic studies have also been performed to understand the dye removal properties.

Dual-functional copper metal-organic frameworks for dye removal

ACS Spring Meeting 2021

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.