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Boosted ammonium production by single cobalt atom catalysts with high Faradic efficiencies.

ABSTRACT: Efficient n = 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, n = O bond activation was achieved by a single-atom catalyst (SAC) with phosphorus anchored on a Co active center to form intermediate N-species for further hydrogenation and reduction. Unique phosphorus-doped discontinuous active sites exhibit better n = O activation performance than conventional N-cooperated single-atom sites, with a high Faradic efficiency of 92.0% and a maximum ammonia yield rate of 433.3 μg NH4·h^-1·cm^-2. 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.

SUBMITTER: Li J

PROVIDER: S-EPMC9303948 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature

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Boosted ammonium production by single cobalt atom catalysts with high Faradic efficiencies.

Li Jiacheng J Li Miao M An Ning N Zhang Shuo S Song Qinan Q Yang Yilin Y Li Jing J Liu Xiang X

Proceedings of the National Academy of Sciences of the United States of America 20220712 29

Efficient n = 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, n = O bond activation was achieved by a single-atom catalyst (SAC) with phosphorus anchored on a Co active center to form intermediate N-species for further hydrogenation and reduction. Unique phosphorus-doped discontinuous active sites exhibit better n = O activation performance than conventional ...[more]

PMID: 35858301

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