Journal
ACS APPLIED ENERGY MATERIALS
Volume 3, Issue 7, Pages 6079-6086Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.0c00931
Keywords
single-atom catalysts; electrocatalysis; nitrogen reduction reaction; laser-irradiation; Co-N-3 sites
Funding
- Natural Science Foundation of China [51872292, 21773164, 11874334]
- Youth Innovation Promotion Association of the Chinese Academy of Sciences [2020458]
- National Synchrotron Radiation Laboratory [KY2340000115]
- CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China [KY2340000115]
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We synthesize Co single atoms anchored on N-doped carbon (Co-SAs/NC) by carbonizing a mixture of cobalt acetate, tartaric acid, and polyvinylpyrrolidone. The Co-SAs/NC exhibits nitrogen reduction reaction (NRR) activity, affording an NH3 yield rate of 9.7 mu g h(-1) mg(cat.)(-1) with a Faradaic efficiency (FE) of 7.5% at -0.45 V (vs RHE) in 0.005 M H2SO4. After laser-irradiation treatment, the Co-SAs/NC indicates an enhanced NH3 yield rate (16.9 mu g h(-1) mg(cat.)(-1)) and FE (18.8%) at -0.25 V (vs RHE) in 0.005 M H2SO4. The improved NRR activity is due to more exposed Co-N-3 sites on Co-SAs/NC after the laser-irradiation treatment.
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