Noble‐Metal‐Free High‐Entropy Alloy Nanoparticles for Efficient Solar‐Driven Photocatalytic CO 2 Reduction

Abstract Metal nanoparticle (NP) cocatalysts are widely investigated for their ability to enhance the performance of photocatalytic materials; however, their practical application is often limited by the inherent instability under light irradiation. This challenge has catalyzed interest in exploring high‐entropy alloys (HEAs), which, with their increased entropy and lower Gibbs free energy, provide superior stability. In this study, 3.5 nm‐sized noble‐metal‐free NPs composed of a FeCoNiCuMn HEA are successfully synthesized. With theoretic calculation and experiments, the electronic structure of HEA in augmenting the catalytic CO 2 reduction has been uncovered, including the individual roles of each element and…

• ES
  European Synchrotron Radiation Facility

  Award: MA5803
• NN
  National Natural Science Foundation of China

  Awards: 22072022, 22375049
• AR
  Australian Research Council

  Award: DE230100173
• NK
  National Key Research and Development Program of China

  Award: 2021YFF0500402