Serrà i Ramos, AlbertGómez, ElviraAl Hoda al Bast, NourZhang, YueDuque, MarcosEsplandiu, María J.Esteve, JaumeNogués, JosepSepúlveda, Borja2024-11-062024-11-062024-03-261385-8947https://hdl.handle.net/2445/216276An urgent demand exists for advanced-technologies to efficiently remove persistent organic pollutants from water, while minimizing energy consumption. Here, we introduce an innovative wireless nanophotoelectrochemical (nPEC) cell using pulsed light for the ultrafast degradation/mineralization of organic pollutants. The nPEC cell comprises a nanostructured Si-pn photodiode that monolithically integrates: (i) a Si-n/Au nanowire-based-photocathode for effective light absorption and photovoltage generation, and (ii) a Si-p/mesoporous-NiPt photoanode serving as catalyst to wirelessly amplify the sulfate radical production by low-intensity light without any bias voltage. The efficacy of the nPEC cell was shown by ultrafast degradation (>99 %) and mineralization (>98 %) of three emerging pollutants (tetracycline, levofloxacin and anatoxin-A). Notably, reaction kinetics were boosted by more than one order of magnitude when exposed to light intensities ca. 5-fold lower than sunlight. Remarkably, pulsed light beams in the 100–500 Hz range provided an additional enhancement in the degradation/mineralization efficiencies, reducing energy-input by half, while enhancing the catalyst's oxidation state and durability.12 p.application/pdfengcc-by-nc-nd (c) Serrà i Ramos, Albert, et al., 2024http://creativecommons.org/licenses/by-nc-nd/4.0/Depuració de l'aiguaAntibiòticsNanotecnologiaWater purificationAntibioticsNanotechnologyinfo:eu-repo/semantics/article7476582024-11-06info:eu-repo/semantics/openAccess