Photoassisted Batch Injection Analysis (photoBIA): Monitoring Photoelectrochemical Activity of Catalysts.

ABSTRACT: We introduce photoassisted batch injection analysis (photoBIA), a novel analytical system that integrates photoelectrochemistry with batch injection analysis (BIA), as a sensitive, reproducible, and time-resolved method for evaluating the activity of light-sensitive semiconductor electrodes. Using BiVO₄ and α-Fe₂O₃/TiO₂ as model semiconductor photoanodes and alcohols (methanol and glycerol) as probe molecules, the photoBIA enables precise delivery of analytes onto an illuminated photoelectrode through hydrodynamic injection, generating sharp faradaic current transients, characteristic of photoelectrooxidation events. The system was benchmarked against conventional stationary photoelectrochemical cells, which exhibited a limited mass transport and

SUBMITTER: Gomes LE 

PROVIDER: S-EPMC12658704 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature