{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,20]],"date-time":"2026-09-20T03:43:22Z","timestamp":1789875802426,"version":"4.0.1"},"reference-count":49,"publisher":"MDPI AG","issue":"20","license":[{"start":{"date-parts":[[2022,10,19]],"date-time":"2022-10-19T00:00:00Z","timestamp":1666137600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["51409285"],"award-info":[{"award-number":["51409285"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["51809087"],"award-info":[{"award-number":["51809087"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["2022QNPY51"],"award-info":[{"award-number":["2022QNPY51"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Basic research funds for the central universities","award":["51409285"],"award-info":[{"award-number":["51409285"]}]},{"name":"Basic research funds for the central universities","award":["51809087"],"award-info":[{"award-number":["51809087"]}]},{"name":"Basic research funds for the central universities","award":["2022QNPY51"],"award-info":[{"award-number":["2022QNPY51"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>In the present study, PbO2 electrodes, doped with different doses of Er (0%, 0.5%, 1%, 2%, and 4%), were fabricated and characterized. Surface morphology characterization by SEM-EDS and XRD showed that Er was successfully doped into the PbO2 catalyst layer and the particle size of Er-PbO2 was reduced significantly. Electrochemical oxidation of sulfamerazine (SMR) in the Er-PbO2 anode system obeyed te pseudo first-order kinetic model with the order of 2% Er-PbO2 &gt; 4% Er-PbO2 &gt; 1% Er-PbO2 &gt; 0.5% Er-PbO2 &gt; 0% PbO2. For 2% Er-PbO2, kSMR was 1.39 h\u22121, which was only 0.93 h\u22121 for 0% PbO2. Effects of different operational parameters on SMR degradation in 2% Er-PbO2 anode system were investigated, including the initial pH of the electrolyte and current density. Under the situation of an initial pH of 3, a current density of 30 mA\u00b7cm\u22122, a concentration of SMR 30 mg L\u22121, and 0.2 M Na2SO4 used as supporting electrolyte, SMR was totally removed in 3 h, and COD mineralization efficiency was achieved 71.3% after 6 h electrolysis. Furthermore, the degradation pathway of SMR was proposed as combining the active sites identification by density functional calculation (DFT) and intermediates detection by LC-MS. Results showed that Er-PbO2 has great potential for antibiotic wastewater treatment in practical applications.<\/jats:p>","DOI":"10.3390\/ijerph192013503","type":"journal-article","created":{"date-parts":[[2022,10,19]],"date-time":"2022-10-19T20:32:23Z","timestamp":1666211543000},"page":"13503","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Fabrication of PbO2 Electrodes with Different Doses of Er Doping for Sulfonamides Degradation"],"prefix":"10.3390","volume":"19","author":[{"given":"Tianyu","family":"Zheng","sequence":"first","affiliation":[{"name":"Department of Environmental Science, College of Life and Environmental Science, Minzu University of China, Beijing 100081, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chunli","family":"Wei","sequence":"additional","affiliation":[{"name":"Department of Environmental Science, College of Life and Environmental Science, Minzu University of China, Beijing 100081, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hanzhi","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Environmental Science, College of Life and Environmental Science, Minzu University of China, Beijing 100081, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jin","family":"Xu","sequence":"additional","affiliation":[{"name":"Department of Environmental Science, College of Life and Environmental Science, Minzu University of China, Beijing 100081, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3551-5384","authenticated-orcid":false,"given":"Yanhong","family":"Wu","sequence":"additional","affiliation":[{"name":"Department of Environmental Science, College of Life and Environmental Science, Minzu University of China, Beijing 100081, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xuan","family":"Xing","sequence":"additional","affiliation":[{"name":"Department of Environmental Science, College of Life and Environmental Science, Minzu University of China, Beijing 100081, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,10,19]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"92","DOI":"10.1016\/j.apcatb.2013.03.035","article-title":"Electrocatalytic destruction of the antibiotic tetracycline in aqueous medium by electrochemical advanced oxidation processes: Effect of electrode materials","volume":"140","author":"Oturan","year":"2013","journal-title":"Appl. Catal. B Environ."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"E3463","DOI":"10.1073\/pnas.1717295115","article-title":"Global increase and geographic convergence in antibiotic consumption between 2000 and 2015","volume":"115","author":"Klein","year":"2018","journal-title":"Proc. Natl. Acad. Sci. USA"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"6772","DOI":"10.1021\/acs.est.5b00729","article-title":"Comprehensive Evaluation of Antibiotics Emission and Fate in the River Basins of China: Source Analysis, Multimedia Modeling, and Linkage to Bacterial Resistance","volume":"49","author":"Zhang","year":"2015","journal-title":"Environ. Sci. Technol."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"121682","DOI":"10.1016\/j.jhazmat.2019.121682","article-title":"A critical review on antibiotics and hormones in swine wastewater: Water pollution problems and control approaches","volume":"387","author":"Cheng","year":"2020","journal-title":"J. Hazard. Mater."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"516","DOI":"10.1016\/j.apcatb.2009.04.014","article-title":"Photocatalytic degradation of sulfa drugs with TiO2, Fe salts and TiO2\/FeCl3 in aquatic environment-Kinetics and degradation pathway","volume":"90","author":"Baran","year":"2009","journal-title":"Appl. Catal. B Environ."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"565","DOI":"10.1007\/s11783-015-0801-2","article-title":"Adsorption behavior of antibiotic in soil environment: A critical review","volume":"9","author":"Wang","year":"2015","journal-title":"Front. Env. Sci. Eng."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"3450","DOI":"10.1016\/j.scitotenv.2009.01.045","article-title":"Comparison of the ozonation and Fenton process performances for the treatment of antibiotic containing manure","volume":"407","author":"Uslu","year":"2009","journal-title":"Sci. Total Environ."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"121200","DOI":"10.1016\/j.jhazmat.2019.121200","article-title":"Environmentally friendly synthesized and magnetically recoverable designed ferrite photo-catalysts for wastewater treatment applications","volume":"381","author":"Hermosilla","year":"2020","journal-title":"J. Hazard. Mater."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"132387","DOI":"10.1016\/j.cej.2021.132387","article-title":"Degradation of antibiotic pollutants by persulfate activated with various carbon materials","volume":"429","author":"Gao","year":"2022","journal-title":"Chem. Eng. J."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"112","DOI":"10.1016\/j.jhazmat.2012.10.009","article-title":"Selective degradation of tetracycline antibiotics present in raw milk by electrochemical method","volume":"243","author":"Kitazono","year":"2012","journal-title":"J. Hazard. Mater."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"212","DOI":"10.1016\/j.envint.2011.07.012","article-title":"Remediation of water pollution caused by pharmaceutical residues based on electrochemical separation and degradation technologies: A review","volume":"40","author":"Sires","year":"2012","journal-title":"Environ. Int."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"603","DOI":"10.1016\/j.apcatb.2014.11.016","article-title":"Decontamination of wastewaters containing synthetic organic dyes by electrochemical methods. An updated review","volume":"166","author":"Brillas","year":"2015","journal-title":"Appl. Catal. B Environ."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"84","DOI":"10.1016\/j.jhazmat.2016.04.009","article-title":"Electrochemical degradation of the antihypertensive losartan in aqueous medium by electro-oxidation with boron-doped diamond electrode","volume":"319","author":"Salazar","year":"2016","journal-title":"J. Hazard. Mater."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"169","DOI":"10.1016\/j.electacta.2013.12.005","article-title":"Electro-catalytic degradation of bisphenol A with modified Co3O4\/beta-PbO2\/Ti electrode","volume":"118","author":"Zhao","year":"2014","journal-title":"Electrochim. Acta"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"180","DOI":"10.1016\/j.seppur.2012.10.006","article-title":"TiO2-NTs\/SnO2-Sb anode for efficient electrocatalytic degradation of organic pollutants: Effect of TiO2-NTs architecture","volume":"102","author":"Wang","year":"2013","journal-title":"Sep. Purif. Technol."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"167","DOI":"10.1016\/j.electacta.2013.03.019","article-title":"Electrochemical mineralization of sulfamethoxazole by Ti\/SnO2-Sb\/Ce-PbO2 anode: Kinetics, reaction pathways, and energy cost evolution","volume":"97","author":"Lin","year":"2013","journal-title":"Electrochim. Acta"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"218","DOI":"10.1016\/j.apsusc.2011.08.034","article-title":"The synthesis and characterization of Ti\/SnO2-Sb2O3\/PbO2 electrodes: The influence of morphology caused by different electrochemical deposition time","volume":"258","author":"An","year":"2011","journal-title":"Appl. Surf. Sci."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"871","DOI":"10.1016\/j.electacta.2015.10.120","article-title":"Mechanism of enhanced electrochemical degradation of highly concentrated aspirin wastewater using a rare earth La-Y co-doped PbO2 electrode","volume":"188","author":"Dai","year":"2016","journal-title":"Electrochim. Acta"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"812","DOI":"10.1016\/j.chemosphere.2018.10.191","article-title":"Electrochemical degradation of insecticide hexazinone with Bi-doped PbO2 electrode: Influencing factors, intermediates and degradation mechanism","volume":"216","author":"Yao","year":"2019","journal-title":"Chemosphere"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"158","DOI":"10.1016\/j.jelechem.2015.11.009","article-title":"Electrocatalytic degradation of methylene blue on Co doped Ti\/TiO2 nanotube\/PbO2 anodes prepared by pulse electrodeposition","volume":"759","author":"Wang","year":"2015","journal-title":"J. Electroanal. Chem."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"193","DOI":"10.1016\/j.jelechem.2018.06.007","article-title":"Preparation and characterization of Fe-Ce co-doped Ti\/TiO2 NTs\/PbO2 nanocomposite electrodes for efficient electrocatalytic degradation of organic pollutants","volume":"823","author":"Xu","year":"2018","journal-title":"J. Electroanal. Chem."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"296","DOI":"10.1016\/j.cej.2017.01.105","article-title":"Electrochemical mineralization of perfluorooctane sulfonate by novel F and Sb co-doped Ti\/SnO2 electrode containing Sn-Sb interlayer","volume":"316","author":"Yang","year":"2017","journal-title":"Chem. Eng. J."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"10191","DOI":"10.1021\/es302148z","article-title":"Electrochemical Mineralization of Perfluorocarboxylic Acids (PFCAs) by Ce-Doped Modified Porous Nanocrystalline PbO2 Film Electrode","volume":"46","author":"Niu","year":"2012","journal-title":"Environ. Sci. Technol."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"9","DOI":"10.1016\/j.seppur.2012.10.043","article-title":"The application of a novel Ti\/SnO2-Sb2O3\/PTFE-La-Ce-beta-PbO2 anode on the degradation of cationic gold yellow X-GL in sono-electrochemical oxidation system","volume":"104","author":"Dai","year":"2013","journal-title":"Sep. Purif. Technol."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"12287","DOI":"10.1016\/S1452-3981(23)13265-2","article-title":"Enhanced Mineralization of Cationic Red X-GRL with Rare Earth doped materials: Gd for example","volume":"8","author":"Dai","year":"2013","journal-title":"Int. J. Electrochem. Sci."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"867","DOI":"10.1016\/j.jhazmat.2010.02.018","article-title":"Effects of experimental parameters on 2,4-dichlorphenol degradation over Er-chitosan-PbO2 electrode","volume":"178","author":"Wang","year":"2010","journal-title":"J. Hazard. Mater."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"33","DOI":"10.1016\/j.physb.2016.02.021","article-title":"Highly sensitive formaldehyde resistive sensor based on a single Er-doped SnO2 nanobelt","volume":"489","author":"Li","year":"2016","journal-title":"Phys. B Condens. Matter"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"2673","DOI":"10.1016\/j.cclet.2020.03.073","article-title":"Insights into the electrochemical degradation of sulfamethoxazole and its metabolite by Ti\/SnO2-Sb\/Er-PbO2 anode","volume":"31","author":"Wang","year":"2020","journal-title":"Chin. Chem. Lett."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"135535","DOI":"10.1016\/j.electacta.2019.135535","article-title":"Electrocatalysis enhancement of alpha, beta-PbO2 nanocrystals induced via rare earth Er(III) doping strategy: Principle, degradation application and electrocatalytic mechanism","volume":"333","author":"Zhou","year":"2020","journal-title":"Electrochim. Acta"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"135649","DOI":"10.1016\/j.electacta.2020.135649","article-title":"Surface characterization and electrochemical properties of PbO2\/SnO2 composite anodes for electrocatalytic oxidation of m-nitrophenol","volume":"335","author":"Wang","year":"2020","journal-title":"Electrochim. Acta"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"115684","DOI":"10.1016\/j.seppur.2019.115684","article-title":"Electrochemical degradation of neutral red on PbO2\/\u03b1-Al2O3 composite electrodes: Electrode characterization, byproducts and degradation mechanism","volume":"227","author":"Yao","year":"2019","journal-title":"Separ. Purif. Technol."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"456","DOI":"10.1016\/j.seppur.2018.10.021","article-title":"Electrochemical oxidation of acetamiprid using Yb-doped PbO2 electrodes: Electrode characterization, influencing factors and degradation pathways","volume":"211","author":"Yao","year":"2019","journal-title":"Separ. Purif. Technol."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"119492","DOI":"10.1016\/j.apcatb.2020.119492","article-title":"Decoration of \u03b3-graphyne on TiO2 nanotube arrays: Improved photoelectrochemical and photoelectrocatalytic properties","volume":"281","author":"Gao","year":"2021","journal-title":"Appl. Catal. B Environ."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"462","DOI":"10.1016\/j.watres.2018.07.056","article-title":"A comprehensive study on the electrocatalytic degradation, electrochemical behavior and degradation mechanism of malachite green using electrodeposited nanostructured beta-PbO2 electrodes","volume":"144","author":"Ansari","year":"2018","journal-title":"Water Res."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"99","DOI":"10.1016\/j.electacta.2016.03.182","article-title":"Preparation of a silver electrode with a three-dimensional surface and its performance in the electrochemical reduction of carbon dioxide","volume":"203","author":"Qiu","year":"2016","journal-title":"Electrochim. Acta"},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"25011","DOI":"10.1039\/c4ra03235g","article-title":"Preparation and characterization of PbO2 electrodes from electro-deposition solutions with different copper concentration","volume":"4","author":"Xu","year":"2014","journal-title":"Rsc Adv."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"114037","DOI":"10.1016\/j.jelechem.2020.114037","article-title":"Electrocatalytic degradation of dibenzoazepine drugs by fluorine doped beta-PbO2 electrode: New insight into the electrochemical oxidation and mineralization mechanisms","volume":"862","author":"Souri","year":"2020","journal-title":"J. Electroanal. Chem."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"2048","DOI":"10.1016\/j.electacta.2007.09.003","article-title":"Preparation and characterization of PbO2 electrodes doped with different rare earth oxides","volume":"53","author":"Kong","year":"2007","journal-title":"Electrochim. Acta"},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"1338","DOI":"10.1016\/j.jtice.2014.03.004","article-title":"Preparation and characterization of carbon nanotube and Bi co-doped PbO2 electrode","volume":"45","author":"Chang","year":"2014","journal-title":"J. Taiwan Inst. Chem. Eng."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"116321","DOI":"10.1016\/j.seppur.2019.116321","article-title":"Effect of indium doping on the PbO2 electrode for the enhanced electrochemical oxidation of aspirin: An electrode comparative study","volume":"237","author":"Xia","year":"2020","journal-title":"Sep. Purif. Technol."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"983","DOI":"10.1007\/s10800-011-0327-7","article-title":"Electropolymerization of phenol on a vitreous carbon electrode in acidic aqueous solution at different temperatures","volume":"41","author":"Tahar","year":"2011","journal-title":"J. Appl. Electrochem."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"215","DOI":"10.1016\/j.chemosphere.2018.04.103","article-title":"Electrochemical degradation of antibiotic levofloxacin by PbO2 electrode: Kinetics, energy demands and reaction pathways","volume":"205","author":"Xia","year":"2018","journal-title":"Chemosphere."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"762","DOI":"10.1016\/j.chemosphere.2019.05.226","article-title":"Electrochemical removal of amoxicillin using a Cu doped PbO2 electrode: Electrode characterization, operational parameters optimization and degradation mechanism","volume":"233","author":"Bian","year":"2019","journal-title":"Chemosphere"},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"13","DOI":"10.1016\/j.seppur.2014.10.004","article-title":"Electrochemical treatment of artificial humidity condensate by large-scale boron doped diamond electrode","volume":"138","author":"Li","year":"2014","journal-title":"Sep. Purif. Technol."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"678","DOI":"10.1016\/j.jhazmat.2009.11.085","article-title":"Design of an electro-Fenton system with a novel sandwich film cathode for wastewater treatment","volume":"176","author":"Fan","year":"2010","journal-title":"J. Hazard. Mater."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"911","DOI":"10.1016\/j.cej.2017.06.038","article-title":"Electrochemical degradation of enrofloxacin by lead dioxide anode: Kinetics, mechanism and toxicity evaluation","volume":"326","author":"Wang","year":"2017","journal-title":"Chem. Eng. J."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"1","DOI":"10.29356\/jmcs.v62i1.575","article-title":"Prediction of Thermodynamic and Structural Properties of Sulfamerazine and Sulfamethazine in Water Using DFT and ab Initio Methods","volume":"62","author":"Hazhir","year":"2018","journal-title":"J. Mex. Chem. Soc."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"614","DOI":"10.1016\/j.chemosphere.2012.01.036","article-title":"Application of response surface methodology to the removal of the antibiotic tetracycline by electrochemical process using carbon-felt cathode and DSA (Ti\/RuO2-IrO2) anode","volume":"87","author":"Wu","year":"2012","journal-title":"Chemosphere"},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"139909","DOI":"10.1016\/j.scitotenv.2020.139909","article-title":"Electrochemical oxidation of sulfamethoxazole in BDD anode system: Degradation kinetics, mechanisms and toxicity evaluation","volume":"738","author":"Hai","year":"2020","journal-title":"Sci. Total Environ."}],"container-title":["International Journal of Environmental Research and Public Health"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1660-4601\/19\/20\/13503\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T00:57:02Z","timestamp":1760144222000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1660-4601\/19\/20\/13503"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,10,19]]},"references-count":49,"journal-issue":{"issue":"20","published-online":{"date-parts":[[2022,10]]}},"alternative-id":["ijerph192013503"],"URL":"https:\/\/doi.org\/10.3390\/ijerph192013503","relation":{},"ISSN":["1660-4601"],"issn-type":[{"value":"1660-4601","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,10,19]]}}}