Continuous Flow Photoelectrochemical Reactor with Gas Permeable Photocathode: Enhanced Photocurrent and Partial Current Density for CO₂ Reduction.

ABSTRACT: Photoelectrochemical (PEC) CO₂ reduction using a photocathode is an attractive method for making valuable chemical products due to its simplicity and lower overpotential requirements. However, previous PEC processes have often been diffusion-limited leading to low production rates of the CO₂ reduction reaction, due to inefficient gas diffusion through the liquid electrolyte to the catalyst surface, particularly at high current densities. In this study, a gas-permeable photocathode in a continuous flow PEC reactor is incorporated, which facilitates the direct supply of CO₂ gas to the photocathode-electrolyte interface, unlike dark reaction-based flow reactors. This concept is demonstrated using Ag-TiO₂ on carbon paper, illuminated through a quartz

SUBMITTER: Jung H 

PROVIDER: S-EPMC11809356 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature