Gas Permeation through V₂O₅ Nanoribbons‐Based Membrane

Abstract Membrane separation processes play a crucial role in gas separation applications, with the need for ongoing development to fulfill new needs for today's challenges. For this purpose, novel 2D nanomaterials are progressively showing promise over conventional polymer‐based membrane material, exhibiting excellent molecular transport properties. Beyond the 2D materials already studied in this field, this article presents the first gas separation performances of vanadium pentoxide membrane. Brand new in gas separation topic, 2D van der Waals nanoribbons of V₂O₅ are successfully synthesized and layered on an anodic aluminum oxide substrate. Gas permeation analysis of He, N₂, and CO₂ are performed on various membranes made from different quantities of the nanomaterial. Gas permeance results suggest a deviation from an expected Knudsen diffusion mechanism of the V₂O₅‐based membrane for He separation. The ideal selectivities of He/N₂ and He/CO₂ are compared to Robeson's upper bound for polymeric membranes. V₂O₅ membranes, prepared with the highest V₂O₅ quantity, exceeded the upper bound from 2008 for He/N₂ and 2019 (the most recent) for He/CO₂, demonstrating the interesting potential of V₂O₅ 2D materials for gas separation.