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oai:docta.ucm.es:20.500.14352/1123882025-03-18T13:54:39Zcom_20.500.14352_14col_20.500.14352_15

Designing a NiFe-LDH/MnO2 heterojunction to improve the photocatalytic activity for NOx removal under visible light Oliva, Maria Angeles Giraldo, David Almodova,r Paloma Martín, Francisco López García, María Luisa Pavlovic, Ilvana Sanchez, Luis 2D/2D heterojunctions between ultrathin NiFe-CO3 layered double hydroxide (LDH) and varying amounts of birnessite (δ-MnO2) were prepared using an environmentally friendly and cost-effective self-assembly method. The prepared samples have proven to be efficient in their application, mitigating NOx emissions via a photo-oxidative process. The effective creation of 2D/2D NiFe–LDH/MnO2 heterojunctions has been verified through a variety of characterisation techniques, such as XRD, FT-IR, TGA, XFR, N2 adsorption–desorption isotherms, HRTEM and SEM images, EDX, and XPS. Photocatalytic measurements have indicated that the heterojunction formed between NiFe-LDH and MnO2 modifies its photoconductive behaviour, significantly enhancing the visible light photocatalytic performance of the partners. Finally, the optimal relationship between NiFe-LDH and MnO2 in the photocatalytic process was studied. It was found that a ratio of 10:1, respectively, exhibited superior properties compared to the other composites, highlighting the best performance in the degradation of NO under visible light and notable stability during the recycling process. 2024-12-11T08:59:37Z 2024-12-11T08:59:37Z 2024-04-10 journal article María Ángeles Oliva, David Giraldo, Paloma Almodóvar, Francisco Martín, María Luisa López, Ivana Pavlovic, Luis Sánchez, Designing a NiFe-LDH/MnO2 heterojunction to improve the photocatalytic activity for NOx removal under visible light, Chemical Engineering Journal, 2024, 489, 151241 1385-8947 10.1016/j.cej.2024.151241 https://hdl.handle.net/20.500.14352/112388 https://doi.org/10.1016/j.cej.2024.151241 https://www.sciencedirect.com/science/article/pii/S1385894724027281?via%3Dihub eng PID2020-117516 GB-l00 PID2020-117516GB-l00/AEI/ 10.13039/501100011033 Albufera Energy Storage S.L. (151-2021) http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 International Elsevier