Degradation efficiency of Mg65Cu25-xAgxY10 nanoporous dealloyed ribbons on pesticide wastewater

Dealloyed ribbons with a layer of networked nanoporous structure of different pore sizes were fabricated by dealloying the as-spun Mg65Cu25-xAgxY10 (x=0, 5, 10, at.%) ribbons in dilute H2SO4 solution in order to enhance the degradation efficiency of pesticide wastewater. Compared to the as-spun ribbons, it is found that the dealloyed ribbons with the networked nanoporous structure exhibit higher degradation efficiency due to their large specific surface areas and enough active sites for the degradation process. Both the average pore sizes of the nanoporous structure and the degradation efficiency of the pesticide wastewater increase with the increase of Ag addition in the dealloyed ribbons. The maximum degradation efficiency up to 95.8% is obtained for the Mg65Cu15Ag10Y10 dealloyed ribbon under the optimal conditions of pH being 3, the initial cis-cypermethrin concentration being 500 mg/L, and the dosage of dealloyed ribbon being 1.33 g/L.

Automated summary

Dealloyed ribbons with networked nanoporous structure exhibit higher degradation efficiency for pesticide wastewater due to their large specific surface areas and enough active sites. The average pore sizes of the nanoporous structure and the degradation efficiency of the wastewater increase with the increase of Ag addition in the dealloyed ribbons.