Boosted ammonium production by single cobalt atom catalysts with high Faradic efficiencies.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 35858301.
- Also identified by DOI 10.1073/pnas.2123450119 and PMC identifier 9303948.
- Licence recorded as CC BY-NC-ND.
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Abstract
Efficient <i>n</i> = O bond activation is crucial for the catalytic reduction of nitrogen compounds, which is highly affected by the construction of active centers. In this study, <i>n</i> = O bond activation was achieved by a single-atom catalyst (SAC) with phosphorus anchored on a Co active center to form intermediate <i>N</i>-species for further hydrogenation and reduction. Unique phosphorus-doped discontinuous active sites exhibit better <i>n</i> = O activation performance than conventional <i>N</i>-cooperated single-atom sites, with a high Faradic efficiency of 92.0% and a maximum ammonia yield rate of 433.3 μg NH4·h<sup>-1</sup>·cm<sup>-2</sup>. This approach of constructing environmental sites through heteroatom modification significantly improves atom efficiency and will guide the design of future functional SACs with wide-ranging applications.