Electrocatalysis最新文献

{"title":"Design and Facile Wet-Chemical Synthesis of Ternary Ir-Based Alloy Electrocatalysts for OER Applications","authors":"Seong Ji Kim,&nbsp;Jin Ho Lee,&nbsp;Oi Lun Li,&nbsp;Dong-Ha Lim,&nbsp;Hee Soo Kim","doi":"10.1007/s12678-026-01012-5","DOIUrl":"10.1007/s12678-026-01012-5","url":null,"abstract":"<div><p>The development of electrocatalysts with high catalytic activity while minimizing the use of precious metals such as iridium (Ir) is essential for advancing hydrogen and oxygen evolution reactions (HER and OER) in anion-exchange membrane water electrolysis (AEMWE) systems. In this study, an Ir-based ternary alloy (Ir–Ni–Co) was synthesized via a simple wet-chemical reduction method using NaBH₄ as the reducing agent. The resulting IrNiCo alloy electrocatalyst (270 mV and 160 mA/cm² @1.8V_RHE) exhibited excellent OER performance, achieving an overpotential more than 70 mV lower than that of commercial IrO₂ (340 mV and 51 mA/cm² @1.8V_RHE) at 10 mA/cm², along with remarkable durability, showing only a 22.8 mV increase versus the reversible hydrogen electrode (RHE) after 24 h of continuous operation in 1 M KOH. This outstanding activity and stability are attributed to the synergistic alloying of Ir with 3d transition metals (Ni and Co), which modulates the adsorption energy of oxygen intermediates, a key factor in enhancing OER kinetics. Notably, the IrNiCo electrocatalyst also demonstrated stable overall water-splitting performance in a two-electrode full-cell configuration. These findings highlight that ternary Ir-based alloys synthesized through this facile wet-chemical approach hold strong promise as next-generation commercial electrocatalysts for alkaline water electrolysis.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 3","pages":"404 - 413"},"PeriodicalIF":2.8,"publicationDate":"2026-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Composites of Cobalt and Zinc Porphyrins with Titania and Graphene Quantum Dots for Photoelectrodegradation of Pentachlorophenol","authors":"Mbulelo Jokazi,&nbsp;James Oyim,&nbsp;Giday Welegergs,&nbsp;Jonathan Britton,&nbsp;Francis Chindeka,&nbsp;Philani Mashazi,&nbsp;Tebello Nyokong","doi":"10.1007/s12678-026-01027-y","DOIUrl":"10.1007/s12678-026-01027-y","url":null,"abstract":"<div>\u0000 \u0000 <p>Herein, we investigated the preparation of composites of cobalt or zinc porphyrins with titania and graphene quantum dots for photoelectrochemical degradation of pentachlorophenol (PCP). Electrochemical analysis was conducted using cyclic voltammetry and electrochemical impedance spectroscopy. The degradation of PCP was followed using UV-vis spectroscopy. The composites of metal porphyrins with titania and graphene quantum dots, exhibited excellent photoelectrochemical degradation results in that the removal efficiency and catalytic rates were enhanced compared to individual components. Among the tested systems, zinc porphyrin-TiO₂-GQDs exhibited the highest removal efficiency up to (80.5%) and catalytic rate of (1.7 × 10^− 2) in the absence of H₂O₂. When H₂O₂ was added, a significantly improved PCP degradation with up to 94.0% removal efficiency and the catalytic rate increased to 1.87 × 10^− 2. Pre-treating PCP via cyclic voltammetry further enhanced the degradation process, yielding a catalytic rate of 2.7 × 10^− 2 and 97.3% removal efficiency.</p>\u0000 </div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 3","pages":"549 - 561"},"PeriodicalIF":2.8,"publicationDate":"2026-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12678-026-01027-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modification of Zr-based NH2-UiO-66 MOF by Incorporation of La2O3-based Nanomaterials as Efficient Photoelectrocatalysts for Oxygen Evolution Reaction (OER) and Photocatalysts for Degradation of Organic Dyes","authors":"Muhammad Kashif,&nbsp;Muhammad Fiaz,&nbsp;Fahmida Jabeen,&nbsp;Muhammad Najam-ul-Haq,&nbsp;Ammara Shabbir,&nbsp;Muhammad Asim Farid,&nbsp;Muhammad Athar","doi":"10.1007/s12678-026-01008-1","DOIUrl":"10.1007/s12678-026-01008-1","url":null,"abstract":"<div><p>Development of low overpotential OER photoelectrocatalysts has caught much attention to delivers the 10 mAcm^− 2 benchmark current density in alkaline medium. Therefore, we designed the highly efficient MOF-based OER photoelectrocatalyst by in-situ introduction of CoO/La₂O₃ nanocomposite into host NH₂-UiO-66 via facile solvothermal method. The as prepared CoO/La₂O₃@NH₂-UiO-66 displays efficient photo electrocatalytic OER-activity and required just 195 mV overpotential to deliver 10 mAcm^− 2 current density in 1.0 M KOH electrolyte with lower Tafel slope value 73 mVdec^− 1, which is higher than many of similar kind of OER catalysts. Meanwhile, it also exhibits satisfactory long-term stability. The increased photocatalytic activity of the in-situ incorporated nanomaterials into the host due to the synergistic and hetro-junction formation effect between the incorporated nanocomposite and the MOFs hosts. This designed efficient photoelectrocatalysts encourages the development of the new MOFs-based photoelectrocatalysts with low overpotential for water splitting and many other applications in future. Similarly, CoO/La₂O₃@NH₂-UiO-66 delivered maximum photocatalytic efficiency for the photodegradation of methylene blue (MB) and methyl orange (MO), up to 92% and 87% respectively.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 3","pages":"536 - 548"},"PeriodicalIF":2.8,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrocatalytic Performance of NiO/CNT/CC in Oxygen Evolution Reaction","authors":"De Yu Xu,&nbsp;Ai Xiang Wei,&nbsp;Li Rong Liang","doi":"10.1007/s12678-026-01024-1","DOIUrl":"10.1007/s12678-026-01024-1","url":null,"abstract":"<div><p>The synergy effect is effective strategy to enhance the transition-metal oxides electrocatalytic oxygen evolution reaction (OER) activities between the electrocatalyst and substrate. In this work, the precursor solutions of NiSO₄ • 6H₂O, Na₂S₂O₈, NH₄OH, and deionized water were used to directly prepare NiO nanosheets which grown on carbon nanotube (CNT)/carbon cloth (CC) substrates through a chemical bath method. Physical characterization revealed that the NiO nanosheets densely wrap around the CNTs, generating abundant the exposure of catalytically active edge sites, thereby significantly enhancing catalytic performance. The OER catalytic performance of NiO/CNT/CC and NiO/CC catalysts were studied and compared. The NiO/CNT/CC catalysts exhibits better OER catalytic performance with an overpotential of 418 mV at 100 mA cm^− 2, a Tafel slope of 92.3 mV dec^− 1, an electrochemical surface area of 1035.0 cm² and charge transfer resistance of 0.21 Ω and great durability in alkaline solution. However, they are 518 mV, 166.7 mV dec^− 1, 202.5 cm² and 0.27 Ω for NiO/CC catalysts, respectively. Compared with NiO/CC catalysts, the excellent OER electrocatalytic activity of NiO/CNT/CC catalysts can be attributed to the synergy effect between NiO and CNT.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 3","pages":"527 - 535"},"PeriodicalIF":2.8,"publicationDate":"2026-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chemically and Electrochemically Modified Surface of In–Sn Alloy Catalysts for Highly Selective CO₂ Reduction to Formate","authors":"Samina Farid,&nbsp;Ashi Rashid,&nbsp;Aneela Anwar","doi":"10.1007/s12678-026-01023-2","DOIUrl":"10.1007/s12678-026-01023-2","url":null,"abstract":"<div>\u0000 \u0000 <p>Carbon dioxide (CO₂) can be electrochemically converted to formate/formic but finding an easily accessible, selective and stable catalyst is an ongoing challenge. Here, we show unique surface-enhanced bimetallic In-Sn alloy, In₇₀Sn₃₀, and In₃₀Sn₇₀ catalysts, prepared by controlled electrochemical nanoscale surface-texturing and chemical surface-etching for efficient conversion of CO₂ to formic acid. Electrochemical conversion of carbon dioxide to formate is a high value process acquiring specific enhanced catalytic sites for high Faradic efficiency and greater product selectivity. Electrochemical and chemical surface-etched In₇₀Sn₃₀, catalysts show outstanding performance for CO₂ to formic acid conversion with a high Faradic efficiency of ~ 96% and 88% respectively, as compared to simple In and Sn based single metal catalysts and unetched In-Sn alloy. Furthermore, electrochemically surface-etched In₇₀Sn₃₀ catalyst remained stable during constant potential electrolysis attained formate Faradic efficiency 93% with current density of 9.8 mAcm^− 2 at -1.15 V vs. RHE for 6 h. catalytic testing. This work provides an insight about the both controlled-electrochemical and chemical surface- etched In₇₀Sn₃₀ alloys, induces distinct changes in phase crystallinity with enhanced formate selectivity. DFT simulations, revealed that variations in the electron and atomic arrangement of the catalyst’s surface affect the interaction energy and formation free energy of different chemical intermediates, which in turn can affect the end-products’ selectivity. The findings reveal that etching methods significantly enhance formate selectivity and activity, providing mechanistic insight beyond previously reported composition- or alloy-focused studies.</p>\u0000 </div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 3","pages":"515 - 526"},"PeriodicalIF":2.8,"publicationDate":"2026-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent Advances in Anode Materials for Microbial Fuel Cells: A Perspective Review","authors":"Yamini Gupta,&nbsp;Poonam Siwatch,&nbsp;Jyotika Dhiman,&nbsp;Kriti Sharma,&nbsp;S. K. Tripathi","doi":"10.1007/s12678-026-01021-4","DOIUrl":"10.1007/s12678-026-01021-4","url":null,"abstract":"<div>\u0000 \u0000 <p>A microbial fuel cell (MFC) is a type of bioreactor that operates under anaerobic conditions, utilizing microbial catalytic activity to convert the chemical energy stored in organic compounds into electrical energy. With the growing global energy crisis, MFCs have gained renewed attention as an eco-friendly technology capable of generating electricity from organic waste while minimizing carbon emissions. MFCs have diverse applications, including the degradation of organic pollutants, wastewater treatment, biosensing, biorecovery, and sustainable power generation. However, their practical implementation remains limited due to low power density. Overcoming these performance challenges requires significant research and innovation. Among the key components of an MFC, the anode plays a crucial role, as it supports biofilm formation where the conversion of organic matter into electrons and protons primarily occurs. The properties of the anode material greatly influence the overall power output and system efficiency. To enhance MFC performance, researchers worldwide are developing and modifying anode materials using various approaches, including metallic and carbon-based materials, waste-derived substrates, metal oxides, nanocomposites, and conducting polymers. This article reviews recent advancements in anode materials for improving microbial fuel cell performance, highlights current challenges, and discusses future directions for anode material development in MFC technology.</p>\u0000 </div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 3","pages":"382 - 403"},"PeriodicalIF":2.8,"publicationDate":"2026-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Highly Sensitive Electrochemical Biosensor for Detection of Hydrogen Peroxide in Milk Using Horseradish Peroxidase Immobilized on a Functionalized MWCNT/Coconut Shell Composite Electrode","authors":"Mridupavan Dutta,&nbsp;Geolangser Basumatary,&nbsp;Panchanan Puzari","doi":"10.1007/s12678-026-01015-2","DOIUrl":"10.1007/s12678-026-01015-2","url":null,"abstract":"<div><p>In this work, coconut shell powder (CSP) grafted functionalized multiwalled carbon nanotubes (FMWCNTs) were drop-coated onto a platinum (Pt) electrode, and horseradish peroxidase (HRP) was chemically immobilized on the modified surface to achieve sensitive and selective hydrogen peroxide detection. Through EDC/NHS coupling, a robust bioelectrode (HRP/FMWCNT/CSP/PTSA/Pt) was fabricated and thoroughly characterized by FTIR, XRD, Raman spectroscopy, EDX, TGA, FESEM, CV, EIS, and DPV. DPV analysis exhibited a fast response toward hydrogen peroxide at -0.01 V, delivering high sensitivity (0.11424 µA/µM) and a low detection limit (0.53 µM) across a linear range of 5–110 µM. The small Michaelis–Menten constant (Km = 12.32 µM) reflects strong enzymatic affinity for hydrogen peroxide at the electrode interface. The biosensor also demonstrated excellent reproducibility, repeatability, and stability, with variations below 2%, and was successfully utilized for hydrogen peroxide quantification in bovine milk samples. Overall, this work introduces a novel, tunable biomaterial platform for biosensor design and highlights its potential as an efficient tool for point-of-care testing (POCT) applications.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 3","pages":"493 - 514"},"PeriodicalIF":2.8,"publicationDate":"2026-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergies between Mn nano-oxides and Fe-N-C-coated carbon nanotubes as oxygen evolution catalysts","authors":"Jun Maruyama,&nbsp;Shohei Maruyama,&nbsp;Setsuko Shibuya,&nbsp;Yoshiyuki Nonoguchi,&nbsp;Zyun Siroma,&nbsp;Kazuhide Kamiya","doi":"10.1007/s12678-026-01017-0","DOIUrl":"10.1007/s12678-026-01017-0","url":null,"abstract":"<div><p>The formation of nanoscale composites of Mn oxides and carbonaceous materials doped with Fe and N (Fe-N-C) was achieved by the sublimation, deposition, and pyrolysis of iron phthalocyanine (FePc) on multi-walled carbon nanotubes (MWCNTs), followed by hydrothermal treatment in aqueous solutions of Mn salts, to investigate the interaction between the components as a quasi-practical catalyst for the oxygen evolution reaction (OER). Nanoparticle, needle-like, and overlapped flake-like Mn oxides were obtained, depending on the Mn precursor concentration and whether the Fe-N-C thin film was coated. The X-ray absorption fine structures of the composite showed that the FePc central structure, that is, Fe coordinated with four N in a square planar configuration, was retained, and that the Mn nano-oxides mainly consisted of MnO₂. The OER current at the composite increased with increasing Mn nano-oxide loading, reached a maximum, and exceeded the current at the MWCNT with either component, indicating a synergistic effect of the Fe-N-C thin film and Mn nano-oxides on the OER in the nanoscale catalyst.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div><div><p>Nanoscale Mn oxides were incorporated into carbon nanotube network coated with carbonaceous thin film doped with Fe and N forming an Fe-N₄ active site showed a higher oxygen evolution current than materials lacking either of the thin film or the Mn oxides, indicating a synergistic effect of the components.</p></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 3","pages":"483 - 492"},"PeriodicalIF":2.8,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nanoporous High-Entropy Alloy Electrodes Produced by Selective Dealloying: Microstructure, Surface Chemistry, and Proof-of-Concept OER Performance","authors":"Alberto Moreira Jorge Junior,&nbsp;Yannick Champion,&nbsp;Virginie Roche,&nbsp;Remi Daudin,&nbsp;Gregory Berthomé,&nbsp;Marian Chatenet","doi":"10.1007/s12678-026-01019-y","DOIUrl":"10.1007/s12678-026-01019-y","url":null,"abstract":"<div><p>Nanoporous high-entropy alloys (HEAs) represent promising electrocatalytic platforms combining compositional complexity, corrosion resistance, and mechanically robust, self-supported architectures. A Ti31V26Zr12Nb26Co5-based HEA electrode was fabricated via selective chemical dealloying and evaluated for oxygen evolution reaction (OER) in alkaline media. Dealloying generates a bicontinuous nanoporous network while preserving metallic backbone integrity, yielding a monolithic, binder-free electrode. Microstructural and surface analyses reveal preferential iron dissolution, Cobalt and vanadium surface-enrichment, and formation of a stable Ti-Zr-Nb oxide framework. <i>Ex situ</i> X-ray photoelectron spectroscopy after electrochemical cycling confirms the emergence of cobalt (oxy)hydroxide and vanadium oxide, consistent with surface reconstruction in Co-based OER electrodes under anodic polarisation. Electrochemical testing demonstrates an overpotential of ~ 370 mV at 10 mA cm⁻² and a Tafel slope of ~ 135 mV dec⁻¹, characteristic of charge-transfer-limited OER kinetics on dynamically reconstructed oxide surfaces. Electrochemically active surface area and turnover frequency were estimated from cobalt redox charge; however, these metrics remain model-dependent and represent apparent quantities for internal comparison. Rather than targeting record intrinsic activity, this work demonstrates metallurgically engineered HEAs as robust, self-supported electrocatalyst platforms, where activity arises from controlled surface reconstruction integrated with a stable nanoporous architecture.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div><div><p>Conceptual illustration of the development of a nanoporous high-entropy alloy (HEA) electrode obtained by selective Fe dealloying from (TiVZrNbCo)50Fe50. The dealloying process generates a nanoscale porous architecture with a high density of surface boundaries and large electrochemically active surface area (ECSA), promoting the formation of catalytically active surface species such as CoOOH, Co(OH)₂, and V₂O₅. The resulting self-supported electrode exhibits efficient oxygen evolution reaction (OER) activity in alkaline media, delivering an overpotential of ~370 mV at 10 mA cm^-2 and a Tafel slope of ~135 mV dec^-1, while maintaining stable performance during electrochemical cycling, demonstrating its potential for green hydrogen production.</p></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 3","pages":"464 - 482"},"PeriodicalIF":2.8,"publicationDate":"2026-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of Ce, PVP-codoped Ti/SnO2-Sb/PbO2 Electrode and its Application in Removal of Methyl Orange","authors":"Tingzhu Chen,&nbsp;Shuna Liu,&nbsp;Feng Zhou,&nbsp;Yongming Tang","doi":"10.1007/s12678-026-01011-6","DOIUrl":"10.1007/s12678-026-01011-6","url":null,"abstract":"<div><p>Ce and polyvinyl pyrrolidone (PVP) were used as dopants to construct Ce, PVP-codoped Ti/SnO₂-Sb/PbO₂ electrode in methanesulfonic acid (MSA) bath for the electrocatalytic removal of organics. The Ce, PVP-codoping results in the formation of more compact PbO2 film and the smaller crystalline size compared with the respective incorporation of Ce or PVP. The accelerated lifetime of the codoped electrode reaches more than 250 h, longer than 223 h of Ce-doped electrode. The removal efficacy of methyl orange (MO) on the codoped electrode reaches 99.34% after 3 h of electrolysis at the current density of 20 mA/cm², and the pseudo-first order apparent rate constant is measured to be 2.219 × 10^− 2 min^− 1, higher than those in the cases of the respective incorporation of Ce or PVP. The increases of both the specific surface area and the ratio of adsorbed oxygen to lattice oxygen are responsible for the improvement of electrocatalytic activity of the codoped electrode. The removal efficacy of methyl orange (MO) on the Ti/SnO₂-Sb/Ce-PVP-PbO₂ anode depends on the applied current density and pH. The hydroxyl radicals, existing in the form of PbO_<i>x</i>(•OH), make main contribution to the removal of MO compared to the direct electrooxidation.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 3","pages":"453 - 463"},"PeriodicalIF":2.8,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}