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Updated: Feb 7, 2026

Simultaneous Measurement of Superoxide/Hydrogen Peroxide and NADH Production by Flavin-containing Mitochondrial Dehydrogenases
Published on: February 24, 2018
High-value utilization of hazardous solid waste for efficient electrocatalytic oxygen reduction to produce hydrogen
Bo Liu1, Xiaoshuang Song1, Guoxing Mu1
1School of Chemistry and Environment, Yunnan Minzu University, Kunming, Yunnan, 650504, PR China.
None:
Valorizing hazardous Electric Arc Furnace Dust (EAFD) remains a critical challenge in the circular economy. Herein, we report a facile H2O2-mediated surface reconstruction strategy to upcycle EAFD into a high-performance electrocatalyst for the two-electron oxygen reduction reaction (2e- ORR). Mechanistically, this oxidative treatment induces the in-situ formation of a ZnO/ZnO2 heterostructure interface. This unique architecture modulates the local electronic distribution to optimize reaction pathways while simultaneously transforming the surface from hydrophobic to hydrophilic (contact angle decreases from ∼93° to ∼28°), thereby accelerating interfacial mass transport. Consequently, the engineered catalyst delivers an exceptional H2O2 yield of 2082 mmol g-1·h-1 at 0 V (vs. RHE) with >80% selectivity over a broad potential window (0-0.68 V) and robust stability. Furthermore, an integrated system coupling on-site H2O2 electrosynthesis with pollutant degradation was established. This work demonstrates a sustainable "waste-treats-waste" paradigm, transforming industrial environmental liabilities into strategic assets for decentralized water purification.
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