Electrocatalytic nitrate reduction on bimetallic Palladium-Copper Nanowires: Key surface structure for selective dinitrogen formation

Electrocatalytic nitrate reduction on bimetallic Palladium-Copper Nanowires: Key surface structure for selective dinitrogen formation

[Display omitted] •Uniform composition-controlled CuxPd100-x alloy NWs are prepared for NO3RR.•Cu28Pd72 NWs deliver an unprecedented N2 selectivity of 75.9 ± 5.2% in product.•N2 formation is kinetically favored via a pathway of NO2* → NO* → N* → N2* on Pd.•Contiguous surface Pd ensemble with specifi...

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Veröffentlicht in:Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2022-05, Vol.435, p.134969, Article 134969
Hauptverfasser: Fu, Chunhong, Shu, Song, Hu, Lin, Liu, Zixun, Yin, Zhouyang, Lv, Xiaoshu, Zhang, Sen, Jiang, Guangming
Format: Artikel
Sprache:eng
Schlagworte:
Bimetallic catalysis
Electrocatalysis
N2 selectivity
Nitrate reduction
Palladium
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Zusammenfassung:[Display omitted] •Uniform composition-controlled CuxPd100-x alloy NWs are prepared for NO3RR.•Cu28Pd72 NWs deliver an unprecedented N2 selectivity of 75.9 ± 5.2% in product.•N2 formation is kinetically favored via a pathway of NO2* → NO* → N* → N2* on Pd.•Contiguous surface Pd ensemble with specific size is the key to high N2 selectivity.•Cu serves to initiate NO3––NO2* conversion and lower Hads coverage on Pd ensemble. Selective electrocatalytic nitrate reduction reaction (NO3RR) to dinitrogen (N2) is essential to nitrogen-cycle management and environmental sustainability. Palladium-based nanomaterials were extensively studied as NO3RR catalysts, but only delivered limited N2 selectivity (
ISSN:1385-8947
1873-3212
DOI:10.1016/j.cej.2022.134969