RT Journal Article
T1 Engineering a multivariate cobalt metal–organic framework for high photocatalytic activity: the impact of mixed ligands and metal incorporation in a visible light-driven heterogeneous photo-Fenton reaction for water treatment
A1 Rodríguez Sánchez, Noelia
A1 Bhattacharya, Biswajit
A1 Emmerling, Franziska
A1 Prinz, Carsten
A1 Prieto Laria, Paula
A1 Ruiz-Salvador, A. Rabdel
A1 Ballesteros, María de la Menta
K1 MOF
K1 Mixed ligands
K1 Metal doping
K1 Heterogeneous photo-Fenton
AB Metal–organic frameworks (MOFs) have attracted increasing attention for the removal of organic pollutants in wastewater via photocatalysis. Here, we design a multivariate modification of ZIF-9 to tune its electronic properties for use in visible light photocatalysis. A controllable synthesis of ZIF-9 and its multivariate forms with the incorporation of copper and the 2-imidazolecarboxaldehyde (ica) ligand was carried out. The materials are tested for the removal of the model dye methylene blue (MB) by a heterogeneous photoFenton-like reaction at neutral pH and room temperature. Cu-ZIF-9-ica (UPO-3) shows high photocatalytic activity under both visible and ultraviolet A (UVA) light, achieving 94% MB degradation in 45 min, compared to 65% MB degradation in 120 min using bare ZIF-9. The study revealed a first-order rate constant of 0.0475 min−1 for Cu-ZIF-9-ica compared to 0.0088 min−1 for ZIF-9 under visible light. The improvement of the catalyst was clearly attributed to the co-incorporation of Cu and the ica ligand in the MOF, which reduces the band gap, in agreement with DFT calculations. Reproducibility and recyclability tests proved that Cu-ZIF-9-ica can be used for at least 3 cycles without a significant loss of efficiency, making it a promising material for the study and application of wastewater treatment.
PB Royal Society of Chemistry
YR 2025
FD 2025-02-28
LK https://hdl.handle.net/10433/23449
UL https://hdl.handle.net/10433/23449
LA en
NO Nanoscale Advances, 2025
NO Presentación en congreso META 2024: Diseño de una nueva estructura de imidazolato zeolítico como catalizador heterogéneo tipo Fenton para la eliminación de contaminantes orgánicos en aguasWe would like to thank Ines Feldmann for the SEM images. We also acknowledge funding for VALZEO project from the European Commission (HORIZON MSCA-2021-SE-01 under grant agreement no. 101086354). P. Prieto-Laria is a beneficiary of a research assistant contract from "Programa Investigo" (Next Generation EU). We are grateful to C3UPO for providing high performance computing facilities.
NO Departamento de Biología Molecular e Ingeniería Bioquímica
DS RIO
RD May 10, 2026