One-dimensional single atom arrays on ferroelectric nanosheets for enhanced CO2 photoreduction

作者：Lizhen Liu, Jingcong Hu, Zhaoyu Ma, Zijian Zhu, Bin He, Fang Chen, Yue Lu, Rong Xu, Yihe Zhang, Tianyi Ma, Manling Sui, Hongwei Huang · 发表于：Nature Communications · 年份：2024 · DOI：10.1038/s41467-023-44493-4 · 被引用次数：116 · 研究领域：Advanced Photocatalysis Techniques、Electronic and Structural Properties of Oxides、Perovskite Materials and Applications

Abstract Single-atom catalysts show excellent catalytic performance because of their coordination environments and electronic configurations. However, controllable regulation of single-atom permutations still faces challenges. Herein, we demonstrate that a polarization electric field regulates single atom permutations and forms periodic one-dimensional Au single-atom arrays on ferroelectric Bi 4 Ti 3 O 12 nanosheets. The Au single-atom arrays greatly lower the Gibbs free energy for CO 2 conversion via Au-O=C=O-Au dual-site adsorption compared to that for Au-O=C=O single-site adsorption on Au isolated single atoms. Additionally, the Au single-atom arrays suppress the depolarization of Bi 4 Ti 3 O 12 , so it maintains a stronger driving force for separation and transfer of photogenerated charges. Thus, Bi 4 Ti 3 O 12 with Au single-atom arrays exhibit an efficient CO production rate of 34.15 µmol·g −1 ·h −1 , ∼18 times higher than that of pristine Bi 4 Ti 3 O 12 . More importantly, the polarization electric field proves to be a general tactic for the syntheses of one-dimensional Pt, Ag, Fe, Co and Ni single-atom arrays on the Bi 4 Ti 3 O 12 surface.