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- W3126331808 abstract "A highly active and selective electrode is essential in electrochemical denitrification. Although the emerging Cu-based electrode has attracted intensive attentions in electrochemical NO3− reduction, the issues such as restricted activity and selectivity are still unresolved. In our work, a binder-free composite electrode (Cu3P/CF) was first prepared by direct growth of copper phosphide on copper foam and then applied to electrochemical NO3− reduction. The resulting Cu3P/CF electrode showed enhanced electrochemical performance for NO3− reduction (84.3%) with high N2 selectivity (98.01%) under the initial conditions of 1500 mg L−1 Cl− and 50 mg N L−1 NO3−. The cyclic voltammetry (CV) and electrochemical impedance spectra (EIS) demonstrated that electrochemical NO3− reduction was achieved through electron transfer between NO3− and Cu0 originated from CF. The in-situ grown Cu3P served as the bifunctional catalyst, the electron mediator or bridge to facilitate the electron-transfer for NO3− reduction and the stable catalyst to produce atomic H* toward NO2− conversion. Meanwhile, the Cu3P/CF remained its electrocatalytic activity even after eight cyclic experiments. Finally, a 2-stage treatment strategy, pre-oxidation by Ir-Ru/Ti anode and post-reduction by Cu3P/CF cathode, was designed for electrochemical chemical oxygen demand (COD) and total nitrogen (TN) removal from real wastewater." @default.
- W3126331808 created "2021-02-15" @default.
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- W3126331808 date "2021-04-01" @default.
- W3126331808 modified "2023-10-11" @default.
- W3126331808 title "Highly selective electrochemical nitrate reduction using copper phosphide self-supported copper foam electrode: Performance, mechanism, and application" @default.
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- W3126331808 doi "https://doi.org/10.1016/j.watres.2021.116881" @default.
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