Identifying and tailoring C-N coupling site for efficient urea synthesis over diatomic Fe-Ni catalyst.

ABSTRACT: Electrocatalytic urea synthesis emerged as the promising alternative of Haber-Bosch process and industrial urea synthetic protocol. Here, we report that a diatomic catalyst with bonded Fe-Ni pairs can significantly improve the efficiency of electrochemical urea synthesis. Compared with isolated diatomic and single-atom catalysts, the bonded Fe-Ni pairs act as the efficient sites for coordinated adsorption and activation of multiple reactants, enhancing the crucial C-N coupling thermodynamically and kinetically. The performance for urea synthesis up to an order of magnitude higher than those of single-atom and isolated diatomic electrocatalysts, a high urea yield rate of 20.2 mmol h^-1 g^-1 with corresponding Faradaic efficiency of 17.8% has been successfully achieved. A

SUBMITTER: Zhang X 

PROVIDER: S-EPMC9464195 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature