Journal
SUSTAINABLE ENERGY & FUELS
Volume 5, Issue 17, Pages 4277-4283Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1se00919b
Keywords
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Funding
- Natural Science Foundation of Gansu Province [20JR10RA241]
- Longyuan Youth Innovative and Entrepreneurial Talents Project [[2021]17]
- Central Government Guides Local Science and Technology Development Project [206Z1003G]
- Key Project of Education Department of Hebei Province [ZD2020339]
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Utilizing graphite-like SnNb2O6 nanosheets as an NRR catalyst improved the ammonia yield, reduced the energy barrier, and enhanced the electrocatalytic NRR efficiency.
The electrochemical nitrogen reduction reaction (NRR) provides a promising route for energy-effective and sustainable ammonia synthesis, while developing high-efficiency NRR electrocatalysts is extremely desirable. Here we first exploited foordite SnNb2O6 nanosheets as an effective and durable NRR catalyst, which presented an NH3 yield of 53.1 mu g h(-1) mg(-1) and a faradaic efficiency of 17.6% at -0.3 V (vs. reversible hydrogen electrode). Theoretical computations uncovered the dual-active-center mechanism of Nb-3c (3c means three-fold coordinated bond) and Sn-4c-Nb-5c dimer on SnNb2O6 (311) to synergistically enhance the N-2 adsorption and activation, consequently lowering the energy barrier for the rate-determining step and boosting the electrocatalytic NRR.
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