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oai:riuma.uma.es:10630/360412026-02-03T11:07:08Zcom_10630_2254col_10630_37953

Designing a NiFe-LDH/MnO2 heterojunction to improve the photocatalytic activity for NOx removal under visible light Oliva Lamarca, María Angeles Giraldo García, David Almodóvar Losada, Paloma Martín-Jiménez, Francisco de Paula López, María Luisa Pavlovic Milicevic, Ivana Sánchez-Granados, Luis Óxidos de nitrógeno 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 photooxidative 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. 2025-01-09T10:08:19Z 2025-01-09T10:08:19Z 2025-01-09T10:08:19Z 2024 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, Volume 489, 2024, 151241, https://www.sciencedirect.com/science/article/pii/S1385894724027281 https://hdl.handle.net/10630/36041 10.1016/j.cej.2024.151241 eng http://hdl.handle.net/10396/28304 http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional Elselvier