Tuning NO coverage promotes ampere-level electrosynthesis of a nylon-6 precursor

Research Square (Research Square), Год журнала: 2025, Номер unknown

Опубликована: Фев. 26, 2025

The electrocatalytic synthesis of cyclohexanone oxime from NO and with high Faradaic efficiency at ampere-level current density is highly desirable but challenging. Here, theoretical calculations reveal that coverage on the Ag catalyst plays a critical role in electrosynthesis. We then adjust local concentration experimentally by tuning reaction rate. find low benefits NH₃ formation, whereas delivers N-2 (N₂O N₂) products. A mechanistic study indicates increasing coverage, active sites transfer bridge step to hollow terrace sites, which results weaker adsorption O* species, leading stable existence NH₂OH* intermediate rather than decomposing form NH₃. However, N‒N coupling also easily occurs coverage. This understanding further inspires us develop doping strategy break equivalent surface can inhibit NO–NO thus realize density. Ru-doped developed, realizing 86% 1.0 cm^{− 2}, far exceeding reported performance.

Язык: Английский

Strong p–d Orbital Hybridization in Atomically Ordered Intermetallic Pd₃Bi Metallene Enables Energy-Efficient Simultaneous Electrosynthesis of a Nylon-6 Precursor and Glycolic Acid

ACS Catalysis, Год журнала: 2025, Номер unknown, С. 6606 - 6617

Опубликована: Апрель 8, 2025

Язык: Английский