TY - JOUR TI - Bilayer asymmetric-based metal-organic frameworks membrane for blue energy conversion AU - Tonnah, R AU - Chai, M AU - Khedri, M AU - Razbin, M AU - Maleki, R AU - Razmjou, A AU - Asadnia, M T2 - Desalination AB - The conversion of Gibbs free energy at the interface of solutions with salinity gradients into electrical energy is essentially a means of mitigating environmental pollution and bolstering the availability of new energy sources to enhance the renewable energy portfolio. However, a three-dimensional (3D) sub-nanofluidic membrane with high ion conductivity and selectivity for a reverse electrodialysis (RED) based osmotic energy conversion in both aqueous and organic solutions remains largely unexplored. Herein, we engineered a bilayer metal organic frameworks (MOFs) membrane with polystyrene sulfonated angstrom-size channels in UiO-66-NH2 base layer and isoreticular MIL-88B membrane as the top layer to enhance permselectivity and high-performance salinity gradient energy generation. The angstrom-size windows in the heterogeneous membrane with a negatively charged channel surface endow the UiO-66-NH2(PSS)/MIL-88B membrane with a preferred direction of ion conduction. Collectively, these features of the bilayer angstrofluidic channel membrane promote diffusion-driven osmotic energy conversion of 32.46 Wm−2 and permeability of 526.60 Am−2 at the interface of 500-fold aqueous work condition and 3.89 Wm−2 from 100-fold salinity gradient in LiCl-methanol. This work sheds light on the design and development of novel high-performance sub-nanochannel membranes for osmotic energy generation with high efficiency in both aqueous and waste organic solvents. DA - 2024/12// PY - 2024 PB - Elsevier VL - 591 SP - 117968 UR - https://www.sciencedirect.com/science/article/pii/S0011916424006799 DO - 10.1016/j.desal.2024.117968 LA - English KW - Salinity Gradient KW - Lab Data KW - Performance ER -