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 μg 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 μg 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-N₃ sites on Co-SAs/NC after the laser-irradiation treatment.

中文翻译：

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在液体中进行激光辐照以释放钴单原子位，以实现高效电催化N ₂还原

我们通过碳化乙酸钴，酒石酸和聚乙烯吡咯烷酮的混合物，合成锚固在N掺杂碳（Co-SAs / NC）上的Co单原子。Co-SAs / NC表现出氮还原反应（NRR）活性，NH ₃产率为9.7μgh ^–1 mg _cat。^–1，在0.005 MH ₂ SO _4中，在-0.45 V（vs RHE）下的法拉第效率（FE）为7.5％。经过激光辐照处理后，Co-SAs / NC在0.005 MH ₂ SO中的-0.25 V（vs RHE）下显示出更高的NH ₃产率（16.9μgh ^–1 mg _cat。^–1）和FE（18.8％）。₄。NRR活性的提高归因于激光辐照处理后Co-SAs / NC上暴露的Co-N ₃位点更多。