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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
