{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,10]],"date-time":"2026-08-10T04:30:20Z","timestamp":1786336220272,"version":"build-2736575974"},"reference-count":61,"publisher":"MDPI AG","issue":"16","license":[{"start":{"date-parts":[[2026,8,7]],"date-time":"2026-08-07T00:00:00Z","timestamp":1786060800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>In this study, oil sludge was utilized as a carbon source to prepare a carbon-based catalyst. By leveraging the oil sludge\u2019s inherent iron content and subsequently introducing exogenous copper, a CuO\/Fe2O3\/carbon composite material (OSC-0.75Cu) was synthesized for the activation of peroxymonosulfate (PMS) to degrade p-nitrophenol. The OSC-0.75Cu\/PMS system achieved a degradation efficiency of 92.19%, which was 2.91 times that of the OSC\/PMS system (31.71%), and its reaction rate constant (kobs) was 8.9 times greater. Furthermore, in simulated water matrices (containing anions and fulvic acid) and three real water matrices (rainwater, moat water, and Yangtze River water), the OSC-0.75Cu\/PMS systemachieved PNP degradation efficiencies ranging from 71.63% to 76.36%. The degradation of p-nitrophenol in this system involves three primary reactive species: hydroxyl radicals (\u2022OH), sulfate radicals (\u2022SO4\u2212), and singlet oxygen (1O2), among which 1O2 plays the dominant role. The coexistence of Cu and Fe species may facilitate surface redox reactions during PMS activation, while defect-related oxygen sites may contribute to PMS adsorption and activation and the generation of 1O2. This study provides a novel strategy that enables the resource utilization of oil sludge while simultaneously addressing environmental remediation challenges.<\/jats:p>","DOI":"10.3390\/molecules31162755","type":"journal-article","created":{"date-parts":[[2026,8,7]],"date-time":"2026-08-07T16:00:43Z","timestamp":1786118443000},"page":"2755","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Preparation of Oil Sludge-Based Activated Carbon Loaded with CuO\/Fe2O3 and Its Mechanism in Activating Peroxymonosulfate for p-Nitrophenol Degradation"],"prefix":"10.3390","volume":"31","author":[{"given":"Hongqiang","family":"Yuan","sequence":"first","affiliation":[{"name":"School of Urban Construction, Yangtze University, Jingzhou 434023, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zheyuan","family":"Zhan","sequence":"additional","affiliation":[{"name":"School of Urban Construction, Yangtze University, Jingzhou 434023, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ying","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Urban Construction, Yangtze University, Jingzhou 434023, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yue","family":"Ran","sequence":"additional","affiliation":[{"name":"School of Urban Construction, Yangtze University, Jingzhou 434023, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chaofan","family":"Tan","sequence":"additional","affiliation":[{"name":"School of Urban Construction, Yangtze University, Jingzhou 434023, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jialian","family":"Xie","sequence":"additional","affiliation":[{"name":"School of Urban Construction, Yangtze University, Jingzhou 434023, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,8,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"114428","DOI":"10.1016\/j.jenvman.2022.114428","article-title":"Materials and energy recovery from oily sludges removed from crude oil storage tanks (tank bottoms): A review of technologies","volume":"305","author":"Yael","year":"2022","journal-title":"J. Environ. Manag."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"119187","DOI":"10.1016\/j.jenvman.2023.119187","article-title":"Activation of peroxymonosulfate by biochar-supported Fe3O4 derived from oily sludge to enhance the oxidative degradation of tetracycline hydrochloride","volume":"347","author":"Zhao","year":"2023","journal-title":"J. Environ. Manag."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"6523","DOI":"10.1016\/j.arabjc.2020.06.009","article-title":"Status and prospect of oil recovery from oily sludge: A review","volume":"13","author":"Hui","year":"2020","journal-title":"Arab. J. Chem."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"128761","DOI":"10.1016\/j.jhazmat.2022.128761","article-title":"Oily sludge treatment in subcritical and supercritical water: A review","volume":"433","author":"Zhong","year":"2022","journal-title":"J. Hazard. Mater."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"413","DOI":"10.1080\/10916466.2016.1263209","article-title":"Contamination of fresh water by petroleum sludge","volume":"35","author":"Liu","year":"2017","journal-title":"Pet. Sci. Technol."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"3064","DOI":"10.1021\/acs.est.9b07082","article-title":"Persulfate-based advanced oxidation: Critical assessment of opportunities and roadblocks","volume":"54","author":"Lee","year":"2020","journal-title":"Environ. Sci. Technol."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"118909","DOI":"10.1016\/j.seppur.2021.118909","article-title":"Activation of peroxymonosulfate by sewage sludge biochar-based catalyst for efficient removal of bisphenol A: Performance and mechanism","volume":"272","author":"Fan","year":"2021","journal-title":"Sep. Purif. Technol."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"182","DOI":"10.1016\/j.watres.2017.03.035","article-title":"Nonradical oxidation from electrochemical activation of peroxydisulfate at Ti\/Pt anode: Efficiency, mechanism and influencing factors","volume":"116","author":"Song","year":"2017","journal-title":"Water Res."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"283","DOI":"10.1016\/j.jhazmat.2013.01.032","article-title":"Bisphenol A treatment by the hot persulfate process: Oxidation products and acute toxicity","volume":"263","author":"Genc","year":"2013","journal-title":"J. Hazard. Mater."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"118242","DOI":"10.1016\/j.jenvman.2023.118242","article-title":"Spinel cobalt ferrite-based porous activated carbon in conjunction with UV light irradiation for boosting peroxymonosulfate oxidation of bisphenol A","volume":"342","author":"Babak","year":"2023","journal-title":"J. Environ. Manag."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"161158","DOI":"10.1016\/j.apsusc.2024.161158","article-title":"Magnetic bimetallic Fe and Cu-loaded N-doped biochar for the activation of peroxomonosulfate for tetracycline degradation: DFT calculations and mechanism analysis","volume":"679","author":"Huang","year":"2025","journal-title":"Appl. Surf. Sci."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"232","DOI":"10.1016\/j.jhazmat.2016.05.040","article-title":"Efficient transformation of DDTs with Persulfate Activation by Zero-valent Iron Nanoparticles: A Mechanistic Study","volume":"316","author":"Zhu","year":"2016","journal-title":"J. Hazard. Mater."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"384","DOI":"10.1016\/j.cej.2012.11.093","article-title":"Oxidative degradation of p-chloroaniline by copper oxidate activated persulfate","volume":"218","author":"Liang","year":"2013","journal-title":"Chem. Eng. J."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"686","DOI":"10.1016\/j.jhazmat.2016.06.004","article-title":"Efficient degradation of carbamazepine by easily recyclable microscaled CuFeO2 mediated heterogeneous activation of peroxymonosulfate","volume":"317","author":"Ding","year":"2016","journal-title":"J. Hazard. Mater."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"10","DOI":"10.1016\/j.chemosphere.2016.12.128","article-title":"Enhanced reactivity of microscale Fe\/Cu bimetallic particles (mFe\/Cu) with persulfate (PS) for p-nitrophenol (PNP) removal in aqueous solution","volume":"172","author":"Ji","year":"2017","journal-title":"Chemosphere"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"106660","DOI":"10.1016\/j.jece.2021.106660","article-title":"Azurobine degradation using Fe2O3@multi-walled carbon nanotube activated peroxymonosulfate (PMS) under UVA-LED irradiation: Performance, mechanism and environmental application","volume":"9","author":"Asadnezhad","year":"2021","journal-title":"J. Environ. Chem. Eng."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"121435","DOI":"10.1016\/j.jhazmat.2019.121435","article-title":"Activation of peroxymonosulfate by Fe doped g-C3N4\/graphene under visible light irradiation for Trimethoprim degradation","volume":"384","author":"Li","year":"2020","journal-title":"J. Hazard. Mater."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"144832","DOI":"10.1016\/j.cej.2023.144832","article-title":"Orange peels biochar doping with Fe-Cu bimetal for PMS activation on the degradation of bisphenol A: A synergy of SO4\u2022\u2212, \u2022OH, 1O2 and electron transfer","volume":"471","author":"Sun","year":"2023","journal-title":"Chem. Eng. J."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"12119","DOI":"10.1007\/s11356-020-10833-w","article-title":"Photocatalytic degradation of p-nitrophenol using biologically synthesized ZnO nanoparticles","volume":"28","author":"Kakavandi","year":"2021","journal-title":"Environ. Sci. Pollut. Res."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"102776","DOI":"10.1016\/j.jwpe.2022.102776","article-title":"Amorphous CoxOy with nano-flake structure for activated persulfate degradation of p-nitrophenol","volume":"47","author":"Qin","year":"2022","journal-title":"J. Water Process Eng."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"134803","DOI":"10.1016\/j.chemosphere.2022.134803","article-title":"Iron-biochar production from oily sludge pyrolysis and its application for organic dyes removal","volume":"301","author":"Liu","year":"2022","journal-title":"Chemosphere"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"122668","DOI":"10.1016\/j.ces.2025.122668","article-title":"Oily sludge carbon-based materials with gallic acid towards peroxymonosulfate activation for enhancing the degradation of p-nitrophenol","volume":"320","author":"Xie","year":"2026","journal-title":"Chem. Eng. Sci."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"436","DOI":"10.1016\/j.cej.2017.03.036","article-title":"Efficient degradation of 2,4-dichlorophenoxyacetic acid by peroxymonosulfate\/magnetic copper ferrite nanoparticles\/ozone: A novel combination of advanced oxidation processes","volume":"320","author":"Jaafarzadeh","year":"2017","journal-title":"Chem. Eng. J."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"676","DOI":"10.1016\/j.cej.2018.01.035","article-title":"Co\/Al2O3-EPM as peroxymonosulfate activator for sulfamethoxazole removal: Performance, biotoxicity, degradation pathways and mechanism","volume":"343","author":"Lai","year":"2018","journal-title":"Chem. Eng. J."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"1540","DOI":"10.1016\/j.chemosphere.2008.08.043","article-title":"A rapid spectrophotometric determination of persulfate anion in ISCO","volume":"73","author":"Liang","year":"2008","journal-title":"Chemosphere"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"114702","DOI":"10.1016\/j.jenvman.2022.114702","article-title":"Long-acting CoAl2O4 spinel catalyst developed on activated alumina pellets by facile synthesis to activate peroxymonosulfate: Controllable cobalt leaching and environmental adaptability","volume":"310","author":"Zhou","year":"2022","journal-title":"J. Environ. Manag."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"119697","DOI":"10.1016\/j.seppur.2021.119697","article-title":"Relying on the non-radical pathways for selective degradation organic pollutants in Fe and Cu co-doped biochar\/peroxymonosulfate system: The roles of Cu, Fe, defect sites and ketonic group","volume":"279","author":"Liang","year":"2021","journal-title":"Sep. Purif. Technol."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"153","DOI":"10.1016\/j.apcatb.2012.09.015","article-title":"Sulfate radicals induced degradation of tetrabromobisphenol A with nanoscaled magnetic CuFe2O4 as a heterogeneous catalyst of peroxymonosulfate","volume":"129","author":"Ding","year":"2013","journal-title":"Appl. Catal. B Environ."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"134675","DOI":"10.1016\/j.cej.2022.134675","article-title":"Cu\u2013Fe\u2013FeC3@nitrogen-doped biochar microsphere catalyst derived from CuFe2O4@chitosan for the efficient removal of amoxicillin through the heterogeneous electro-Fenton process","volume":"434","author":"Qi","year":"2022","journal-title":"Chem. Eng. J."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"712","DOI":"10.1016\/j.jallcom.2015.07.157","article-title":"Structural phase transformations of as-synthesized Cu-nanoferrites by annealing process","volume":"649","author":"Amer","year":"2015","journal-title":"J. Alloys Compd."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"10","DOI":"10.1016\/j.apcatb.2019.01.079","article-title":"Highly efficient activation of peroxymonosulfate by natural negatively-charged kaolinite with abundant hydroxyl groups for the degradation of atrazine","volume":"247","author":"Li","year":"2019","journal-title":"Appl. Catal. B Environ."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"120136","DOI":"10.1016\/j.seppur.2021.120136","article-title":"Nitrogen-doped biochar encapsulated Fe\/Mn nanoparticles as cost-effective catalysts for heterogeneous activation of peroxymonosulfate towards the degradation of bisphenol-A: Mechanism insight and performance assessment","volume":"283","author":"Zhang","year":"2022","journal-title":"Sep. Purif. Technol."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"44","DOI":"10.1016\/j.cej.2017.07.132","article-title":"Chemistry of persulfates in water and wastewater treatment: A review","volume":"330","author":"Lutze","year":"2017","journal-title":"Chem. Eng. J."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"3833","DOI":"10.1021\/es400101f","article-title":"Degradation of organic pollutants in wastewater by bicarbonate-activated hydrogen peroxide with a supported cobalt catalyst","volume":"47","author":"Zhou","year":"2013","journal-title":"Environ. Sci. Technol."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"3478","DOI":"10.1021\/ie403801f","article-title":"Efficient H2O2 oxidation of organic dyes catalyzed by simple copper(II) ions in bicarbonate aqueous solution","volume":"53","author":"Cheng","year":"2014","journal-title":"Ind. Eng. Chem. Res."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"324","DOI":"10.1016\/j.watres.2017.03.043","article-title":"Bicarbonate-activated persulfate oxidation of acetaminophen","volume":"116","author":"Jiang","year":"2017","journal-title":"Water Res."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.apcatb.2018.02.059","article-title":"Enhanced activation process of persulfate by mesoporous carbon for degradation of aqueous organic pollutants: Electron transfer mechanism","volume":"231","author":"Tang","year":"2018","journal-title":"Appl. Catal. B Environ."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"126795","DOI":"10.1016\/j.colsurfa.2021.126795","article-title":"Synthesis scaly Ag-TiO2 loaded fly ash magnetic bead particles for treatment of xanthate wastewater","volume":"624","author":"Li","year":"2021","journal-title":"Colloids Surf. A Physicochem. Eng. Asp."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"2133","DOI":"10.1039\/D3SC05023H","article-title":"Copper and conjugated carbonyls of metal\u2013organic polymers as dual redox centers for Na storage","volume":"15","author":"Wang","year":"2024","journal-title":"Chem. Sci."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"15230","DOI":"10.1021\/acscatal.2c04275","article-title":"In situ reconstruction of Cu\u2013N coordinated MOFs to generate dispersive Cu\/Cu2O nanoclusters for selective electroreduction of CO2 to C2H4","volume":"12","author":"Liu","year":"2022","journal-title":"ACS Catal."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"127888","DOI":"10.1016\/j.cej.2020.127888","article-title":"\u03b3-Fe2O3 decorated attapulgite composite modified with CuCl2 as magnetically separable sorbents for Hg0 removal from coal combustion flue gas","volume":"408","author":"Dong","year":"2021","journal-title":"Chem. Eng. J."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"136778","DOI":"10.1016\/j.cej.2022.136778","article-title":"Competitive adsorption of Cd(II), Pb(II) and Cu(II) ions from acid mine drainage with zero-valent iron\/phosphoric titanium dioxide: XPS qualitative analyses and DFT quantitative calculations","volume":"445","author":"Ren","year":"2022","journal-title":"Chem. Eng. J."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"108799","DOI":"10.1016\/j.jece.2022.108799","article-title":"The multi-metal oxides blended activated coke for efficient NH3-SCR at super low-temperature","volume":"10","author":"Peng","year":"2022","journal-title":"J. Environ. Chem. Eng."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"138873","DOI":"10.1016\/j.electacta.2021.138873","article-title":"Cobalt-iron oxide nanotubes decorated with polyaniline as advanced cathode hosts for Li-S batteries","volume":"390","author":"Gu","year":"2021","journal-title":"Electrochim. Acta"},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"105800","DOI":"10.1016\/j.jece.2021.105800","article-title":"Malachite green degradation by persulfate activation with CuFe2O4@biochar composite: Efficiency, stability and mechanism","volume":"9","author":"Huang","year":"2021","journal-title":"J. Environ. Chem. Eng."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"136250","DOI":"10.1016\/j.cej.2022.136250","article-title":"Activation of peroxymonosulfate by MnFe2O4@BC composite for bisphenol A degradation: The coexisting of free-radical and non-radical pathways","volume":"442","author":"Xu","year":"2022","journal-title":"Chem. Eng. J."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"670","DOI":"10.1016\/j.susc.2011.12.013","article-title":"Preparation, surface state and band structure studies of SrTi(1\u2212x)Fe(x)O(3\u2212\u03b4)(x = 0\u20131) perovskite-type nano structure by X-ray and ultraviolet photoelectron spectroscopy","volume":"606","author":"Ghaffari","year":"2012","journal-title":"Surf. Sci."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"938","DOI":"10.1016\/S1872-2067(20)63701-9","article-title":"Regulating carbon work function to boost electrocatalytic activity for the oxygen reduction reaction","volume":"42","author":"Cai","year":"2021","journal-title":"Chin. J. Catal."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"131960","DOI":"10.1016\/j.cej.2021.131960","article-title":"Synergistic effect of PMS activation by Fe0@Fe3O4 anchored on N, S, O co-doped carbon composite for degradation of sulfamethoxazole","volume":"427","author":"Wang","year":"2022","journal-title":"Chem. Eng. J."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"158281","DOI":"10.1016\/j.cej.2024.158281","article-title":"Peroxymonosulfate activation by Ni\u2013Co nanoparticles encapsulated in nitrogen-doped carbon derived from Co-doped Ni metal\u2013organic frameworks for efficient enrofloxacin degradation","volume":"503","author":"Cao","year":"2025","journal-title":"Chem. Eng. J."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"122177","DOI":"10.1016\/j.seppur.2022.122177","article-title":"Singlet Oxygen-Dominated Activation of Peroxymonosulfate by 3d Hierarchical Mno2 Nanostructures for Degradation of Organic Pollutants in Water: Surface Defect and Catalytic Mechanism","volume":"303","author":"Wang","year":"2022","journal-title":"Sep. Purif. Technol."},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"115110","DOI":"10.1016\/j.watres.2019.115110","article-title":"Manganese oxide integrated catalytic ceramic membrane for degradation of organic pollutants using sulfate radicals","volume":"167","author":"Wu","year":"2019","journal-title":"Water Res."},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"122892","DOI":"10.1016\/j.jclepro.2020.122892","article-title":"Hierarchical BiOX (X= Cl, Br, I) microrods derived from Bismuth-MOFs: In situ synthesis, photocatalytic activity and mechanism","volume":"272","author":"Li","year":"2020","journal-title":"J. Clean. Prod."},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"626","DOI":"10.1016\/j.apcatb.2017.08.088","article-title":"Insights into perovskite-catalyzed peroxymonosulfate activation: Maneuverable cobalt sites for promoted evolution of sulfate radicals","volume":"220","author":"Duan","year":"2018","journal-title":"Appl. Catal. B Environ."},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"796","DOI":"10.1016\/j.cej.2019.04.188","article-title":"Efficient degradation of atrazine by LaCoO3\/Al2O3 catalyzed peroxymonosulfate: Performance, degradation intermediates and mechanism","volume":"372","author":"Zhang","year":"2019","journal-title":"Chem. Eng. J."},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"116825","DOI":"10.1016\/j.seppur.2020.116825","article-title":"Bismuth MOFs based hierarchical Co3O4-Bi2O3 composite: An efficient heterogeneous peroxymonosulfate activator for azo dyes degradation","volume":"242","author":"Li","year":"2020","journal-title":"Sep. Purif. Technol."},{"key":"ref_57","doi-asserted-by":"crossref","first-page":"12941","DOI":"10.1021\/acs.est.5b03595","article-title":"Activation of peroxymonosulfate by benzoquinone: A novel nonradical oxidation process","volume":"49","author":"Zhou","year":"2015","journal-title":"Environ. Sci. Technol."},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"135474","DOI":"10.1016\/j.cej.2022.135474","article-title":"A new insight into the mechanism in Fe3O4@CuO\/PMS system with low oxidant dosage","volume":"438","author":"Shao","year":"2022","journal-title":"Chem. Eng. J."},{"key":"ref_59","doi-asserted-by":"crossref","first-page":"120247","DOI":"10.1016\/j.apcatb.2021.120247","article-title":"Catalytic activation of peroxydisulfate by alfalfa-derived nitrogen self-doped porous carbon supported CuFeO2 for nimesulide degradation: Performance, mechanism and DFT calculation","volume":"294","author":"Xin","year":"2021","journal-title":"Appl. Catal. B Environ."},{"key":"ref_60","doi-asserted-by":"crossref","first-page":"125021","DOI":"10.1016\/j.chemosphere.2019.125021","article-title":"Activation of peroxymonosulfate by CoFe 2O4 loaded on metal-organic framework for the degradation of organic dye","volume":"241","author":"Zhang","year":"2020","journal-title":"Chemosphere"},{"key":"ref_61","doi-asserted-by":"crossref","first-page":"125413","DOI":"10.1016\/j.jhazmat.2021.125413","article-title":"Recycling exhausted magnetic biochar with adsorbed Cu2+ as a cost-effective permonosulfate activator for norfloxacin degradation: Cu contribution and mechanism","volume":"413","author":"Pan","year":"2021","journal-title":"J. Hazard. Mater."}],"container-title":["Molecules"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1420-3049\/31\/16\/2755\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,10]],"date-time":"2026-08-10T04:12:32Z","timestamp":1786335152000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1420-3049\/31\/16\/2755"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,8,7]]},"references-count":61,"journal-issue":{"issue":"16","published-online":{"date-parts":[[2026,8]]}},"alternative-id":["molecules31162755"],"URL":"https:\/\/doi.org\/10.3390\/molecules31162755","relation":{},"ISSN":["1420-3049"],"issn-type":[{"value":"1420-3049","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,8,7]]}}}