Electric double layer-mediated polarization field for optimizing photogenerated carrier dynamics and thermodynamics.

ABSTRACT: Photocatalytic hydrogen evolution efficiency is limited due to unfavorable carrier dynamics and thermodynamic performance. Here, we propose to introduce electronegative molecules to build an electric double layer (EDL) to generate a polarization field instead of the traditional built-in electric field to improve carrier dynamics, and optimize the thermodynamics by regulating the chemical coordination of surface atoms. Based on theoretical simulation, we designed CuNi@EDL and applied it as the cocatalyst of semiconductor photocatalysts, finally achieved a hydrogen evolution rate of 249.6 mmol h^-1 g^-1 and remained stable after storing under environmental conditions for more than 300 days. The high H₂ yield is mainly due to the perfect work function, Fermi lev

SUBMITTER: Zhou C 

PROVIDER: S-EPMC10275871 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature