Reduction of Superoxide Radical Intermediate by Polydopamine for Efficient Hydrogen Peroxide Photosynthesis

Abstract The synthesis of hydrogen peroxide through artificial photosynthesis is a green and promising technology with advantages in sustainability, economy and safety. However, superoxide radical (⋅O 2 − ), an important intermediate in photocatalytic oxygen reduction to H 2 O 2 production, has strong oxidizing properties that potentially destabilize the catalyst. Therefore, avoiding the accumulation of ⋅O 2 − for its rapid conversion to H 2 O 2 is of paramount significance in improving catalyst stability and H 2 O 2 yield. In this work, a strategy was developed to utilize protonated groups for the rapid depletion of converted ⋅O 2 − , thereby the efficiency of photocatalytic synthesis of H 2 O 2 from CN was…

• NN
  National Natural Science Foundation of China

  Award: 51872147