Energy-Efficient, Sustainable Cascade Glucose Electrooxidation into Glucaric Acid.

ABSTRACT: Glucaric acid (GRA) is a critical platform chemical for manufacturing biodegradable materials. Selective glucose (GLU) electrooxidation into GRA provides a sustainable route for biomass valorization. However, conventional methods suffer from energy-intensive processes due to excessive operational potential exceeding 1.2 V. Here we demonstrate an energy-efficient tandem system that decouples GRA electrosynthesis into cascade GLU-to-gluconic acid (GNA) and GNA-to-GRA oxidation. When pairing an Au/C catalyst for selective aldehyde oxidation and an AuPt/C catalyst for hydroxyl oxidation, we achieve 91.8% Faradaic efficiency and nearly 100% conversion efficiency at 0.6 V_RHE for GLU-to-GNA oxidation, and 81% Faradaic efficiency and 90% conversion efficiency at 0.55 V_RHE for

SUBMITTER: He M 

PROVIDER: S-EPMC12910541 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature