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Article Abstract
Electrocatalytic reduction of nitrate (NO RR) to synthesize ammonia (NH ) provides a competitive manner for carbon neutrality and decentralized NH synthesis. Atomically precise nanoclusters, as an advantageous platform for investigating the NO RR mechanisms and actual active sites, remain largely underexplored due to the poor stability. Herein, we report a (NH ) [Ag (mba) ] nanoclusters (Ag NCs) loaded on Ti C MXene (Ag /MXene) for highly efficient NO RR performance towards ambient NH synthesis with improved stability in neutral medium. The composite structure of MXene and Ag NCs enables a tandem catalysis process for nitrate reduction, significantly increasing the selectivity and FE of NH . Besides, compared with individual Ag NCs, Ag /MXene has better stability with the current density performed no decay after 108 hours of reaction. This work provides a strategy for improving the catalytic activity and stability of atomically precise metal NCs, expanding the mechanism research and application of metal NCs.
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