Ti³⁺ self-doped TiO_2−x nanowires for efficient electrocatalytic N₂ reduction to NH₃

Ti³⁺–TiO_2−x/TM behaves as an efficient electrocatalyst for ambient N₂-to-NH₃ fixation with a high faradaic efficiency of 14.62% and a NH₃ yield of 3.51 × 10⁻¹¹ mol s⁻¹ cm⁻² at −0.55 V versus a reversible hydrogen electrode in 0.1 M Na₂SO₄.