Three-dimensional printed zerovalent iron enables selective and sustained reductive dehalogenation of florfenicol via structure-induced corrosion resistance and electron transfer regulation.

3D-printed zero-valent iron achieves over 90% florfenicol dehalogenation with enhanced stability and reduced corrosion in anoxic conditions.

• Why it matters: Efficient and durable reductive dehalogenation of contaminants like florfenicol is limited by rapid corrosion and poor electron utilization of traditional iron materials, hindering environmental remediation efforts.
• What they did: Researchers used 3D printing to create hierarchical porous and hydrophobic Fe 0 structures, improving corrosion resistance and electron transfer, and tested their performance in dehalogenating florfenicol over multiple cycles.
• The result: The 3D-printed Fe 0 maintained high removal efficiency, reduced iron consumption and leaching, and effectively degraded other pharmaceuticals, demonstrating broad applicability and advancing contaminant treatment technologies.