Electrocatalytic Reduction of Nitrate Using Magnéli Phase TiO2 Reactive Electrochemical Membranes Doped with Pd-Based Catalysts

This research focused on synthesis, characterization, and application of point-of-use catalytic reactive electrochemical membranes (REMs) for electrocatalytic NO3 – reduction. Deposition of Pd–Cu and Pd–In catalysts to the REMs produced catalytic REMs (i.e., Pd–Cu/REM and Pd–In/REM) that were active...

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Bibliographic Details
Published in:Environmental science & technology 2018-08, Vol.52 (16), p.9370-9379
Main Authors: Gayen, Pralay, Spataro, Jason, Avasarala, Sumant, Ali, Abdul-Mehdi, Cerrato, José M, Chaplin, Brian P
Format: Article
Language:English
Online Access:Get full text
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Summary:This research focused on synthesis, characterization, and application of point-of-use catalytic reactive electrochemical membranes (REMs) for electrocatalytic NO3 – reduction. Deposition of Pd–Cu and Pd–In catalysts to the REMs produced catalytic REMs (i.e., Pd–Cu/REM and Pd–In/REM) that were active for NO3 – reduction. Optimal performance was achieved with a Pd–Cu/REM and upstream counter electrode, which reduced NO3 – from 1.0 mM to below the EPAs regulatory MCL (700 μM) in a single pass through the REM (residence time ∼2 s), obtaining product selectivity of
ISSN:0013-936X
1520-5851
DOI:10.1021/acs.est.8b03038