Accelerated electrocatalytic urea synthesis via atomic-ordering-mediated d-p orbital hybridization in ternary intermetallic Pd3Bi0.5In0.5 metallene

Abstract

A ternary intermetallic metallene (i-Pd3Bi0.5In0.5ene) was synthesized via a one-pot solvothermal method and employed to promote the electrochemical synthesis of urea from CO2 and NO3- . The catalyst achieves 38.8% of Faradaic efficiency and 1516 μg h⁻¹ mgcat.⁻¹ Of yield rate at −1.3 V (vs. Ag/AgCl) through Bi/In-Pd synergistic effects, with in situ Fourier transform infrared spectroscopy and density functional theory calculations revealing the C-N coupling pathway.