Electrochemical synthesis of ammonia via nitrogen reduction reaction is a rational route to save energy and relieve pollution compared to the traditional Haber-Bosch process. In this report, ZrO2 nanosphere derived from thermolysis of Zr-based biphenyl-4,4 '-dicarboxylic acid MOFs (ZrO2/C) as a non-noble metal catalyst with large specific surface area and porous structure is proposed to fix nitrogen to ammonia at ambient conditions. Such catalyst achieves Faradaic efficiency of 11.86 % and a NH3 yield rate of 10.72 mu g h(-1) mg(cat.)(-1) at -0.6 V vs. the reversible hydrogen electrode in 0.1 M Na2SO4. First-principles calculations confirm the alternating reaction at the catalyst surface.

Dong, S., Xia, J., Zhu, H., Du, X., Gu, Y., Liu, Q., et al. (2022). ZrO2/C nanosphere enables high-efficiency nitrogen reduction to ammonia at ambient conditions. CHEMCATCHEM, 14(17) [10.1002/cctc.202200458].

ZrO2/C nanosphere enables high-efficiency nitrogen reduction to ammonia at ambient conditions

Traversa, E
2022-01-01

Abstract

Electrochemical synthesis of ammonia via nitrogen reduction reaction is a rational route to save energy and relieve pollution compared to the traditional Haber-Bosch process. In this report, ZrO2 nanosphere derived from thermolysis of Zr-based biphenyl-4,4 '-dicarboxylic acid MOFs (ZrO2/C) as a non-noble metal catalyst with large specific surface area and porous structure is proposed to fix nitrogen to ammonia at ambient conditions. Such catalyst achieves Faradaic efficiency of 11.86 % and a NH3 yield rate of 10.72 mu g h(-1) mg(cat.)(-1) at -0.6 V vs. the reversible hydrogen electrode in 0.1 M Na2SO4. First-principles calculations confirm the alternating reaction at the catalyst surface.
2022
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore ING-IND/22 - SCIENZA E TECNOLOGIA DEI MATERIALI
English
ammonia
calculation
catalyst
Faradaic efficiency
nitrogen
Dong, S., Xia, J., Zhu, H., Du, X., Gu, Y., Liu, Q., et al. (2022). ZrO2/C nanosphere enables high-efficiency nitrogen reduction to ammonia at ambient conditions. CHEMCATCHEM, 14(17) [10.1002/cctc.202200458].
Dong, S; Xia, J; Zhu, H; Du, X; Gu, Y; Liu, Q; Luo, Y; Kong, Q; Guo, H; Li, T; Traversa, E
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/322343
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