Selective Capture and Continuous Recovery of Sulfur-Containing Molecules from Flowing Wastewater Using a Capillary Ag₂Mo₃O₁₀·1.8H₂O/Carbon Fiber Membrane System

Abstract

This study presents a novel membrane-inspired Ag₂Mo₃O₁₀·1.8H₂O/carbon fiber cloth (CFC) hybrid framework designed for the continuous and selective recovery of high-value sulfur-containing molecules from organic wastewater. The framework was fabricated by uniformly growing Ag₂Mo₃O₁₀·1.8H₂O nanowires on CFC membrane, forming a hierarchical porous network with abundant micro-nano channels that facilitate efficient, capillary-driven water transport. Owing to its mesoporous structure and specific Ag-S coordination affinity, the material exhibits excellent selectivity for sulfur-containing dyes, achieving rapid adsorption (>94% removal of methylene blue within 10 minutes) and high specificity in mixed solutions. Moreover, the hybrid framework demonstrates outstanding reusability, retaining high recovery efficiency over multiple cycles. A continuous-flow system based on this framework operates without external pressure and achieves a water transport rate of 1875 mL·h-1·m-2. These results underscore the potential of the Ag₂Mo₃O₁₀·1.8H₂O/CFC system as an efficient, scalable, and sustainable platform for industrial wastewater resource recovery.