Metal-organic framework (MOF)-based mixed-matrix membranes (MMMs) are promising for CO2 separation but remain limited by poor filler–polymer compatibility and compromised molecular sieving at high filler loadings. Herein, we developed a hydrogen-bond-mediated molecular interfacial engineering strategy by constructing complementary donor–acceptor hydrogen-bond networks between NH2-ZIF-8 and a carboxylated polyimide (COOH-PI), enabling the synergistic regulation of interfacial compatibility and the MOF pore microenvironment. The hydrogen-bonding network strengthened interfacial adhesion, suppressed nonselective defects, enhanced CO2 affinity, and optimized the ultramicroporous structure, while amination narrowed the MOF pore aperture to improve molecular sieving. The MMM containing 25 wt.% NH2-ZIF-8 with 15% amination exhibited excellent interfacial integrity and long-term operational stability, while its CO2/CH4 and CO2/N2 separation performances lie above both the 2008 Robeson upper bound and the revised 2019 upper bound reported by Neil B. McKeown et al. This strategy provides a general approach for designing high-performance CO2 separation MMMs.
Poly(ionic liquid)-grafted UiO-66-NH2 gels are developed as a high-performance and co-catalyst-free platform for efficient CO2 capture and chemical fixation under mild conditions. To address the mass transfer limitations and high energy barriers typical of purely microporous powder materials, a series of hierarchically...
Dong-Sheng Li, Rui Li, Yang-Yang Lei et al.· ACS Applied Materials and In...· 0 citations
Polybenzimidazole (PBI) membranes doped with phosphoric acid (PA) are promising electrolytes for high-temperature proton exchange membrane fuel cells (HT-PEMFCs) due to their excellent thermal stability and intrinsic mechanical strength. However, their practical performance is often constrained by insufficient PA uptak...
Yun-Feng Zhang, Xiao-Yan Liu, Xing-Ling Xia et al.· ACS Applied Materials and In...· 0 citations
Silicon-graphite (Si/C) composite anodes are promising for next-generation lithium-ion batteries because of their high capacity and industrial compatibility; however, their practical application is hindered by unstable interfacial chemistry and electrode degradation associated with the large volume changes of silicon d...
Solar-driven carbon capture technology provides a promising strategy to address the high energy penalties associated with conventional amine-based chemical absorption. This study proposes a (MWCNTs-N-CQDs)@SiO2/ChCl-Gly-MEA nanofluid absorption system that integrates high heat/mass transfer with superior photothermal c...
Yang Tang, Wei Wang, Zhang-Mao Hu et al.· ACS Applied Materials and In...· 0 citations
ABSTRACT Covalent organic framework (COF) membranes synthesized via scalable interfacial polymerization (IP) show significant promise for water purification and desalination. However, random monomer diffusion and rapid polymerization kinetics often result in limited crystallinity and disordered pore architectures withi...
Gui-Shan Hu, Mu-Ning Chen, Yun-Qiu Zhou et al.· Advancement of science· 0 citations
