Ag@TiO₂ as an Efficient Electrocatalyst for N₂ Fixation to NH₃ under Ambient Conditions

Abstract With the use of traditional Haber‐Bosch N 2 fixation, a huge amount of CO 2 emission bring a huge burden to the environment. Electrochemical N 2 reduction provides an environmental‐friendly and sustainable alternative to NH 3 synthesis at ambient conditions. Herein, we report our recent experimental finding that Ag composited with TiO 2 can greatly improve the N 2 reduction reaction performance of TiO 2 toward ambient conversion. In 0.1 M Na 2 SO 4 (pH=7), such electrocatalyst achieves a large NH 3 yield rate of 14.88 μg h −1 mg −1 cat. with a Faradaic efficiency of 6.2 % at −0.70 V vs. reversible hydrogen electrode. Besides, it also demonstrates high electrochemical and structural stability for NH 3 generation.