Atom(片上系统)
材料科学
电场
铁电性
极化(电化学)
吸附
催化作用
结晶学
光电子学
化学
物理化学
物理
电介质
生物化学
量子力学
计算机科学
嵌入式系统
作者
Lizhen Liu,Jingcong Hu,Heyou Han,Zijian Zhu,Binglin He,Fang Chen,Yue Lu,Rong Xu,Yihe Zhang,Tianyi Ma,Manling Sui,Hongwei Huang
标识
DOI:10.1038/s41467-023-44493-4
摘要
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.
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