Regulating the Scaling Relations in Ammonia Synthesis through a Light‐Driven Bendable Seesaw Effect on Tailored Iron Catalyst

作者：Yi Yang, Pei Wang, Xiaohu Zhang, Shengyao Wang, Xing Ding, Xing Ding, Hongshan Ma, He Wang, Yuanzhi Li, Bo Jiang, Hui Song, Xiao Hai, Yue Lu, Yue Lu, Hao Chen, Hao Chen, Jinhua Ye · 发表于：Angewandte Chemie International Edition · 年份：2024 · DOI：10.1002/anie.202408309 · 被引用次数：15 · 研究领域：Ammonia Synthesis and Nitrogen Reduction、Advanced Photocatalysis Techniques、Environmental remediation with nanomaterials

Abstract Advancing the energy‐intensive Haber–Bosch process faces significant challenges due to the intrinsic constraints of scaling relations in heterogeneous catalysis. Herein, we reported an approach of bending the “seesaw effect” to regulate the scaling relations over a tailored α‐Fe metallic material (α‐Fe‐110s), realizing highly efficient light‐driven thermal catalytic ammonia synthesis with a rate of 1260 μmol g catalyst −1 h −1 without additional heating. Specifically, the thermal catalytic activity of α‐Fe‐110s was significantly enhanced by the novel stepped {110} surface, exhibiting a 3.8‐fold increase compared to the commercial fused‐iron catalyst with promoters at 350 °C. The photo‐induced hot electron transfer further accelerates the dinitrogen dissociation and hydrogenation simultaneously, effectively overcoming the limitation of scaling relation over identical sites. Consequently, the ammonia production rate of α‐Fe‐110s was further enhanced by 30 times at the same temperature with irradiation. This work designs an efficient and sustainable system for ammonia synthesis and provides a novel approach for regulating the scaling relations in heterogeneous catalysis.