Bi-Modified Ni3S2 Promotes Selective Nitrite-to-Hydroxylamine Reduction for Cyclohexanone Oxime Synthesis

Abstract

Bi-modified Ni₃S₂ enables ambient aqueous nitrite reduction oximation to cyclohexanone oxime with 52.78% Faradaic efficiency and 0.42 mmol h^-1 cm^-2 yield. Bi regulates Ni₃S₂ electronic structure and interfacial water, promoting selective NH₂OH-mediated nitrogen-organic coupling for sustainable caprolactam precursor synthesis.