2026-04-14T16:21:48Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/591512025-02-19T12:34:27Zcom_10324_31661com_10324_952com_10324_894col_10324_31662

Quilez Molina, Ana Isabel Barroso Solares, Suset Hurtado García, Violeta Heredia Guerrero, José Alejandro Rodríguez Méndez, María Luz Rodríguez Pérez, Miguel Ángel Pinto Sanz, Javier 2023-04-17T12:12:13Z 2023-04-17T12:12:13Z 2023 ACS Applied Materials & Interfaces 2023, vol. 15, n. 16, pp. 20385–20397 1944-8244 https://uvadoc.uva.es/handle/10324/59151 10.1021/acsami.3c00849 ACS Applied Materials & Interfaces 1944-8252 Producción Científica The excellent catalytic properties of copper nanoparticles (CuNPs) for the degradation of the highly toxic and recalcitrant chlorpyrifos pesticide are widely known. However, CuNPs generally present low stability caused by their high sensitivity to oxidation, which leads to a change of the catalytic response over time. In the current work, the immobilization of CuNPs into a polycaprolactone (PCL) matrix via electrospinning was demonstrated to be a very effective method to retard air and solvent oxidation and to ensure constant catalytic activity in the long term. CuNPs were successfully anchored into PCL electrospun fibers in the form of Cu2O at different concentrations (from 1.25 wt % to 5 wt % with respect to the PCL), with no signs of loss by leaching out. The PCL mats loaded with 2.5 wt % Cu (PCL-2.5Cu) almost halved the initial concentration of pesticide (40 mg/L) after 96 h. This process was performed in two unprompted and continuous steps that consisted of adsorption, followed by degradation. Interestingly, the degradation process was independent of the light conditions (i.e., not photocatalytic), expanding the application environments (e.g., groundwaters). Moreover, the PCL-2.5Cu composite presents high reusability, retaining the high elimination capability for at least five cycles and eliminating a total of 100 mg/L of chlorpyrifos, without exhibiting any sign of morphological damages. Ministerio de Ciencia e Innovación (PID2021-127108OB-I00) Ministerio de Ciencia e Innovación (MCIN/AEI/ 10.13039/501100011033) EU NextGenerationEU/PRTR program (PLEC2021-007705) Ministerio de Ciencia, Innovación and Ministerio de Universidades - FEDER (RTI2018−098749−B-I00 and RTI2018−097367-A-I00) Junta de Castilla y León and EU-FEDER program (CLU-2019-04 and VA202P20) application/pdf eng American Chemical Society info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ © 2023 American Chemical Society Atribución 4.0 Internacional Materials science Nanochemistry Chlorpyrifos Copper oxide Catalysis Electrospinning Clorpirifos Óxido de cobre Catálisis Electrohilado 2210.28-1 Preparación y Caracterización de Materiales Inorgánicos Encapsulation of copper nanoparticles in electrospun nanofibers for sustainable removal of pesticides info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://pubs.acs.org/doi/full/10.1021/acsami.3c00849 SI