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- Title
Pd-dispersed Cu<sub>2</sub>O/Cu Catalysts for Electrochemical Nitrate Reduction.
- Authors
Guo, Feng; Xie, Chenxin; Zhao, Hui; Gao, Yang; Teng, Houkai; Han, Enshan
- Abstract
Electrochemical nitrate reduction reaction (NITRR) is a promising approach to removing nitrogen pollutants in wastewater. Herein, Pd-Cu2O/CF was synthesized using a two-step method: in situ growth of cubic Cu2O nanoparticles on Cu foam (CF) and electrodeposited palladium (Pd) metal. The cubic Cu2O nanoparticles provide abundant hydrogen/oxygen-adsorbing sites, and Pd sites with outstanding hydrogen adsorption–desorption features generate more active hydrogen (H*), both of which effectively improve the activity for NITRR. It was demonstrated that Pd-Cu2O/CF had excellent performance with nitrate removal of 99.7% within 60 min. To remove total nitrogen (TN) from wastewater, NH4+ was completely oxidized to N2 within 120 min by adding Cl−, and the TN removal was up to 99.9%. Moreover, Pd-Cu2O/CF displayed long-term stability after ten cycle tests.
- Subjects
DENITRIFICATION; ELECTROLYTIC reduction; ATOMIC hydrogen; POLLUTANTS; CATALYSTS; NITROGEN
- Publication
Catalysis Letters, 2024, Vol 154, Issue 4, p1782
- ISSN
1011-372X
- Publication type
Article
- DOI
10.1007/s10562-023-04361-8