Ruthenium Single Atomic Sites Surrounding the Support Pit with Exceptional Photocatalytic Activity

Abstract Single‐metal atomic sites and vacancies can accelerate the transfer of photogenerated electrons and enhance photocatalytic performance in photocatalysis. In this study, a series of nickel hydroxide nanoboards (Ni(OH) x NBs) with different loadings of single‐atomic Ru sites ( w ‐SA‐Ru/Ni(OH) x ) were synthesized via a photoreduction strategy. In such catalysts, single‐atomic Ru sites are anchored to the vacancies surrounding the pits. Notably, the SA‐Ru/Ni(OH) x with 0.60 wt % Ru loading (0.60‐SA‐Ru/Ni(OH) x ) exhibits the highest catalytic performance (27.6 mmol g −1 h −1 ) during the photocatalytic reduction of CO 2 (CO 2 RR). Either superfluous (0.64 wt %, 18.9 mmol g −1 h −1 ; 3.35 wt %, 9.4 mmol…

• SS
  Salt Science Research Foundation

  Award: BL11B
• NN
  National Natural Science Foundation of China

  Awards: 22302154, 22325101, BL11B, 22102218, 2022QNRC001
• BS
  Beijing Synchrotron Radiation Facility