Related Experiment Video
Updated: Jan 28, 2026

Author Spotlight: Characterizing Porous Materials for Aiding the Development of Robust Metal-Organic Frameworks with Adsorption Behavior
Published on: March 8, 2024
Polydopamine-Modified Metal-Organic Framework Membrane with Enhanced Selectivity for Carbon Capture
Wufeng Wu1, Zhanjun Li1, Yu Chen2
1School of Environment, and Guangdong Key Laboratory of Environmental Pollution and Health , Jinan University , Guangzhou 511443 , P.R. China.
Abstract:
In this work, a versatile postmodification strategy based polydopamine (PDA) grafting is reported for improving CO2 separation performance of MOF membranes. Owning to the strong bioadhesion, PDA can be deposited on the UiO-66 membrane through a simple and mild process. Since PDA impregnation in invalid nanometer-sized pinholes and grain boundaries of the MOF membrane suppress nonselective gas transports, the modified PDA/UiO-66 membrane exhibits significantly enhanced CO2/N2 and CO2/CH4 selectivities of 51.6 and 28.9, respectively, which are 2-3 times higher than the reported MOF membranes with similar permeance. Meanwhile, because PDA modification do not change UiO-66 intrinsic pores and membrane thickness is submicrometer-sized, the CO2 permeance is 2-3 orders of magnitude larger than those membranes with similar selectivity, up to 3.7 × 10-7 mol m-2 s-1 Pa-1 (1115 GPU). Moreover, the PDA/UiO-66 membrane with good reproducibility has excellent long-term stability for CO2 capture under moist condition in 36 h measurement period.
More Related Videos
Related Concept Videos
The Carbon Cycle
Carbon Skeletons
Bonding in Metals
Metallic Solids
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
Alkali Metals
Table 1: Properties of the alkali metals
What is Natural Selection?

