期刊
CHEMICAL COMMUNICATIONS
卷 55, 期 96, 页码 14482-14485出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9cc06132k
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资金
- Funds for International Cooperation and Exchange of the National Natural Science Foundation of China [21761162015]
- National Natural Science Foundation of China [21802011]
The electrochemical nitrogen reduction reaction (NRR) is a promising but extremely challenging approach for ammonia synthesis under ambient conditions. Herein, we report the excellent NRR performance of gold nanoparticles (AuNPs) with multiple high-index facets, prepared by a modified seed-mediated method. At -0.3 V vs. RHE and in 0.1 M Li2SO4 aqueous solution, the AuNPs afford the highest faradaic efficiency (FE) of 73.32% reported so far, with a remarkable ammonia generation rate of 9.22 mu g h(-1) cm(-2). Density functional theory (DFT) calculations reveal that the high-index faceted surfaces of the AuNPs have greater preference for the adsorption of NRR intermediates (*NNH) and significantly hinder the adsorption of competing hydrogen evolution intermediates (*H).
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