Dealloyed nanoporous copper as a highly active catalyst in Fenton-like reaction for degradation of organic pollutants

Nanoporous Dealloyed Metal Materials Processing and Applications─A Review

“…The microstructures of nanoporous Cu offer more exposure of active sites and provide shorter pathways for electron and mass transfer. 66 The chemical dealloying method has also been recently used to prepare nanoporous copper by 0.5 M HF acid treatment of the melt-spun Cu-Zr-based metallic glasses at room temperature by varying the leaching time from 3 to 10 min. 67 The obtained nanoporous copper showed the homogeneous, bicontinuous, and nanoscale interpenetrating ligament/channel structure.…”

“…Dealloying of Al–Cu alloys by the chemical dealloying method using a 2 M NaOH solution led to the fabrication of nanoporous Cu metal with bicontinuous, high-density, low-coordinated sites and interpenetrating ligament networks . The fabricated nanoporous Cu showed ten times enhanced performance in the catalytic degradation of Bisphenol-A, compared to other commercial Cu nanoparticles.…”

“…The fabricated nanoporous Cu showed ten times enhanced performance in the catalytic degradation of Bisphenol-A, compared to other commercial Cu nanoparticles. The microstructures of nanoporous Cu offer more exposure of active sites and provide shorter pathways for electron and mass transfer . The chemical dealloying method has also been recently used to prepare nanoporous copper by 0.5 M HF acid treatment of the melt-spun Cu-Zr-based metallic glasses at room temperature by varying the leaching time from 3 to 10 min .…”

Hierarchically Porous TiO2 Photocatalyst Prepared by Additive Manufacturing and Dealloying for Highly Efficient Photocatalytic Degradation of Tetracycline

“…Dealloying is a simple and efficient method to prepare high-activity nanoporous materials and can be applied to alloys with geometrical complexity. 25,26 In the LPBF-dealloying method, the LPBF technique is performed to fabricate alloy precursors with controlled macroporous structures and dealloying is subsequently applied to generate interconnected nanopores on the surface of the LPBF-prepared precursors. As a consequence, the hierarchically porous photocatalysts prepared by this method obtain both tailored macroporous structures and highly active nanoporous structures.…”

“…Dealloying is a selective corrosion process, in which more chemically active elements of alloys are selectively etched away, while the less active components diffuse and reorganize into randomly distributed porous structures. , These porous structures are encapsulated on the surface of alloy precursors with apertures ranging from a few nanometers to tens of micrometers. Dealloying is a simple and efficient method to prepare high-activity nanoporous materials and can be applied to alloys with geometrical complexity. , …”