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

Lizhen Liu, Jingcong Hu, Zhaoyu Ma, Zijian Zhu, Bin He, Fang Chen (), Yue Lu (), Rong Xu, Yihe Zhang, Tianyi Ma, Manling Sui and Hongwei Huang ()
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Lizhen Liu: China University of Geosciences (Beijing)
Jingcong Hu: Beijing University of Technology
Zhaoyu Ma: Beihang University
Zijian Zhu: China University of Geosciences (Beijing)
Bin He: China University of Geosciences (Beijing)
Fang Chen: China University of Geosciences (Beijing)
Yue Lu: Beijing University of Technology
Rong Xu: Nanyang Technological University
Yihe Zhang: China University of Geosciences (Beijing)
Tianyi Ma: RMIT University
Manling Sui: Beijing University of Technology
Hongwei Huang: China University of Geosciences (Beijing)

Nature Communications, 2024, vol. 15, issue 1, 1-10

Abstract: 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 Bi4Ti3O12 nanosheets. The Au single-atom arrays greatly lower the Gibbs free energy for CO2 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 Bi4Ti3O12, so it maintains a stronger driving force for separation and transfer of photogenerated charges. Thus, Bi4Ti3O12 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 Bi4Ti3O12. 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 Bi4Ti3O12 surface.

Date: 2024
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DOI: 10.1038/s41467-023-44493-4

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