Zhang, YanyuDaniel, GiorgiaLanzalaco, SoniaIsee, Abdirisak AhmedFacchin, AlessandroWang, AiminBrillas, EnricDurante, ChristianSirés Sadornil, Ignacio2022-03-042022-03-042021-09-220304-3894https://hdl.handle.net/2445/183788The excessive cost, unsustainability or complex production of new highly selective electrocatalysts for H2O2 production, especially noble-metal-based ones, is prohibitive in the water treatment sector. To solve this conundrum, biomass-derived carbons with adequate textural properties were synthesized via agarose doublestep pyrolysis followed by steam activation. A longer steam treatment enhanced the graphitization and porosity, even surpassing commercial carbon black. Steam treatment for 20 min yielded the greatest surface area (1248 m2 g-1), enhanced the mesopore/micropore volume distribution and increased the activity (E1/2 = 0.609 V) and yield of H2O2 (40%) as determined by RRDE. The upgraded textural properties had very positive impact on the ability of the corresponding gas-diffusion electrodes (GDEs) to accumulate H2O2, reaching Faradaic current efficiencies of ~95% at 30 min. Acidic solutions of β-blocker acebutolol were treated by photoelectro- Fenton (PEF) process in synthetic media with and without chloride. In urban wastewater, total drug disappearance was reached at 60 min with almost 50% mineralization after 360 min at only 10 mA cm-2. Up to 14 degradation products were identified in the Cl--containing medium.application/pdfengcc-by-nc-nd (c) Zhang, Yanyu, et al., 2021https://creativecommons.org/licenses/by-nc-nd/4.0/BiomassaAigua oxigenadaContaminació de l'aiguaBiomassHydrogen peroxideWater pollutioninfo:eu-repo/semantics/article7184282022-03-04info:eu-repo/semantics/openAccess