Carbon nanotube membranes with Pd-Cu modification successfully reduce nitrate levels via electrocatalysis

https://phys.org/news/2023-05-carbon-nanotube-membranes-pd-cu-modification.html 

"no chemicals needed, no sludgs produced, and convenient... electrodeposition, flowthrough electrochemical reactor... overcome mass transfer problem... Nitrate reduced 99 %) membrane potentials <−1.2 V... nitrate removal efficiency 56.2 %, and N2 selectivity 23.8 % for Pd: Cu=1:1 membrane operated −0.8 V... enhanced under acidic conditions, N2 selectivity decreased...  concentration Cl− ions and dissolved oxygen little effect on nitrate reduction... mass transfer rate constant improved 6.6X"

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