Wastewater treatment via H2O2 activation and 4-nitrophenol oxidation with iron-doped nickel-azolate frameworks

Abstract

An advanced oxidation heterogeneous process completely degrades 4-nitrophenol in weak acid ambient aqueous conditions using post-synthetically iron-doped nickel azolate frameworks. The framework crystallinity, porosity and reactivity of the redox-active iron (II/III) sites, hydroxyl anions and radicals upon H2O2 pretreatment are discussed based on spectroscopic analysis of the reaction mixture and pretreated MOF.

F. G: C. and N. M. acknowledge the “Ramon y Cajal” contract with code RYC2020-028681-I and RYC2021-033167-I funded MCIN/AEI/10.13039/501100011033 and by “ESF investing in your future”, “European Union NextGenerationEU/PRTR”. This work has been partially supported by the projects PID2021- 124695OB-C22, PID2022-142897OA-I00 funded by MICINN-FEDER-AEI 10.13039/501100011033, MICIU/AEI/10.13039/501100011033 and by FEDER, UE. The work is also partially supported by the projects TED2021-129626B-I00 and TED2021-130288B-I00/ funded by MCIN/AEI/10.13039/501100011033/ and by the European Union Next Generation EU-PRTR. FGC thank Generalitat Valenciana (CISEJI/2023/78). E. L. M. and M. G. A. acknowledge the research program of University of Salamanca (PIC2-2022-08). J.L. is a Serra Húnter Fellow and is grateful to the ICREA Academia program and projects MICINN/FEDER PID2021-124572OB-C31//AEI/10.13039/501100011033/FEDER, UE and 2021 SGR 01061.

6 - Aigua Neta i Sanejament

13 - Acció per al Clima

Postprint (published version)