Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 266, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2020.118633
Keywords
Carbon materials; Heteroatom-doping; Nitrogen reduction reaction; Ammonia synthesis; Electrocatalysis
Funding
- National Natural Science Foundation of China [21421001, 21573115, 21875118]
- Natural Science Foundation of Tianjin [19JCZDJC37700]
- Tianjin City Training Program of Innovation and Entrepreneurship for Undergraduates [201910055458]
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The synergistic effect among dual heteroatoms-doped carbons leads to significantly enhanced electrochemical performance. Herein, with N as the primary dopant, B, F, P, and S as the secondary heteroatoms are introduced into porous carbons respectively to investigate their electrocatalytic nitrogen reduction reaction (NRR) performance. The promoting effect of B, F, P, and S to N-doped carbons for NRR is different from the experimental evolution and analysis. In there, N,B-codoping of porous carbon has the greatest promotional effect in NRR. The electronic structure of these doped carbons determines the electrocatalytic activity. For instance, with the presence of B dopant, the fabricated N-doped materials exhibit a higher content of pyridinic-N. Further systematic and controlled experiments demonstrate that the presence of B element facilitates the formation of B-N bonds, thus boosting NRR activity. From in situ Fourier transform infrared spectroscopic findings, this N,B dual-doped carbons follow the associative mechanism during NRR process.
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