Electrocatalysis最新文献

{"title":"Evaluating Oxygen Evolution Activity in Molybdenum-Derived Nitrides, Sulfides, and Oxides","authors":"Jyoti Raghav,&nbsp;Kumari Diksha,&nbsp;Sapna Raghav,&nbsp;Shakti Singh,&nbsp;V. S. Pandey,&nbsp;Soumyendu Roy","doi":"10.1007/s12678-026-01018-z","DOIUrl":"10.1007/s12678-026-01018-z","url":null,"abstract":"<div><p>This research explores the efficiency of molybdenum-based catalysts including molybdenum oxide, sulfide, and nitride in oxygen evolution reactions (OER). By systematically comparing these materials, we aim to elucidate their unique electrochemical properties and effectiveness in driving OER, a key process in energy conversion technologies. The study involves an in-depth analysis of their structural, compositional, and morphological attributes to determine the fundamental factors affecting their catalytic performance. These findings contribute to the strategic design and enhancement of OER catalysts, promoting advancements in sustainable energy solutions. Notably, this work represents the first direct comparison of these three materials under identical experimental conditions, providing fresh insights into their catalytic potential. The electrodes were fabricated by the sputter deposition technique by varying the plasma power. The outperformed electrode of the molybdenum nitride-based electrode fabricated at 200 W of plasma power, demonstrated the overpotential of 124 mV at the current density of 10 mA/cm².</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>Graphical Abstract</p></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 3","pages":"443 - 452"},"PeriodicalIF":2.8,"publicationDate":"2026-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733091","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":"Graphite–ZnO Nanofiber-Decorated GCE for Label-Free Gene-DprE1 Sensing: Toward Rapid MDR-TB Diagnosis","authors":"Dinesh R. Rotake,&nbsp;Jitendra B. Zalke,&nbsp;Arpita Parakh,&nbsp;Shubham C Anjankar,&nbsp;Shiv Govind Singh,&nbsp;Ranjana Singh","doi":"10.1007/s12678-026-01016-1","DOIUrl":"10.1007/s12678-026-01016-1","url":null,"abstract":"<div>\u0000 \u0000 <p>The decaprenylphosphoryl-β-D-ribose-2′-epimerase (DprE1) plays a key role in the synthesis of arabinogalactan and lipoarabinomannan makes it a promising target for the development of novel anti-tuberculosis drugs. The flavoenzyme DprE1, encoded by the gene DprE1, is overexpressed in multi-drug-resistant tuberculosis (MDR-TB). This study aims to develop an electrocatalytically active, label-free gene-DprE1 Based biosensor for the determination of MDR-TB using Graphite-Zinc Oxide (Graphite-ZnO) composite nanofibers synthesized with electrospinning technique. To identify its structural morphology, the various characterizations like scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM) were performed. These nanofibers were further immobilized on the glassy carbon electrodes (GCE) with MSA-EDC-NHS protocol and gene-DprE1 probe and target. The electrocatalytic signal transduction arising from the synergistic interaction between conductive graphite and semiconducting ZnO was systematically evaluated using cyclic voltammetry (CV), differential pulse voltammetry (DPV), and electrochemical impedance spectroscopy (EIS). To evaluate the real-world applicability of the developed biosensor, gene-DprE1 was spiked into human urine samples in order to mimic clinically relevant conditions. This strategy was adopted to determine whether the biosensor could effectively detect the target gene in a non-invasive biological matrix, a feature that holds significant promise for improving diagnostic approaches. Monitoring gene-DprE1 in urine is especially useful since it offers a patient-friendly alternative to traditional intrusive collection procedures. This makes it easier to find MDR-TB early. A wide linear detection range was obtained, extending from 1 pM/mL to 1 nM/mL, making it appropriate for monitoring trace-level biomarkers. The biosensor also showed great sensitivity, with very low limits of detection (LOD) of 0.239 pM/mL using CV, 0.366 pM/mL using DPV, and 0.194 pM/mL using EIS. These results clearly show that the biosensor might be a very reliable, sensitive, and non-invasive diagnostic tool, which makes it even more useful for detecting MDR-TB early in clinical settings.</p>\u0000 <span>AbstractSection</span>\u0000 Graphical Abstract\u0000 <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>\u0000 \u0000 </div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 3","pages":"428 - 442"},"PeriodicalIF":2.8,"publicationDate":"2026-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733230","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":"Development of Electrochemical Dopamine Sensors Based on Reduced Graphene Oxide (rGO): Synthesis Strategies, Composite Materials, and Sensor Performance","authors":"M. Yasser,&nbsp;Abdul Wahid Wahab,&nbsp;Abdul Karim,&nbsp;St. Fauziah,&nbsp;Paulina Taba,&nbsp;Syaharuddin Kasim,&nbsp;Syarifuddin Liong,&nbsp;Nasriadi Dali,&nbsp;Abdur Rahman Arif,&nbsp;Arini Rajab,&nbsp;Anita Anita,&nbsp;Fatimah Fatimah,&nbsp;Rosalin Rosalin","doi":"10.1007/s12678-026-01010-7","DOIUrl":"10.1007/s12678-026-01010-7","url":null,"abstract":"<div><p>Dopamine, a critical neurotransmitter, plays a pivotal role in regulating various physiological and neurological processes. The detection and monitoring of dopamine levels are essential for understanding the pathophysiology of diseases such as Parkinson’s, Alzheimer’s, and depression. Reduced graphene oxide (rGO)-based electrochemical sensors have garnered significant attention due to their exceptional properties, including superior electrical conductivity, expansive surface area, and remarkable functionalization potential. This review article provides a comprehensive discussion of recent advancements over the past eight years in rGO-based dopamine electrochemical sensors, encompassing rGO synthesis techniques and surface modification methods. The integration of rGO with other materials, such as inorganic compounds, polymers, and biomolecules, is also examined to assess sensor performance metrics, including detection limit, sensitivity, and linear range. Finally, we elucidate future research prospects for the development of more effective rGO-based dopamine electrochemical sensors.</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":"363 - 381"},"PeriodicalIF":2.8,"publicationDate":"2026-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733107","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":"In-depth Investigation of the Roles of Nanocluster Carbon Quantum Dot derived Two Sources and Synthesis Pathways for Electrochemical Applications","authors":"Kurniawan Kurniawan,&nbsp;Zul Arham,&nbsp;Ismaun Ismaun,&nbsp;Muhammad Nurdin,&nbsp;Irwan Irwan,&nbsp;Fadil Arham,&nbsp;Fharaz Jhanizza,&nbsp;Sjamsiah Sjamsiah","doi":"10.1007/s12678-026-01014-3","DOIUrl":"10.1007/s12678-026-01014-3","url":null,"abstract":"<div><p>Carbon quantum dot (CQDs) is a carbon nanomaterial that is increasingly attracting attention due to its unique properties, such as high fluorescence properties, very small particle size (1–10 nm), high surface area, active functional groups, photostability, and good biocompatibility. These advantages make CQDs a potential candidate in a wide range of energy, catalyst, biomedical, and electrochemical sensor applications. This study reported that CQDs synthesis uses two different approaches, namely the palm kernel shell (PKS) biomass-based hydrothermal method and the graphite electrolysis method, as well as evaluating its electrochemical performance in battery and sensor applications. In the hydrothermal method, the optimum conditions were obtained at a temperature of 160 °C with a reaction time of 7 h, resulting in a CQDs of the PKS with a larger current area and the specific capacitance value (Cs) of the electrolyte NaOH of 0.40 M increased from 0.0193 F/g to 0.0238 F/g. A significant increase reached 0.0828 F/g at a scan rate of 10 mV/s. The performance of this material is associated with the synergy effect of the presence of active functional groups (–COOH, –C = O, C–OH) that strengthen charge transfer and ion interactions at the electrode interface. Meanwhile, the electrolysis method at a voltage of 5 V produces an ideal CQDs, so that when modified on the graphene electrode (G@CQDs), it mobilizes an increase in the redox current from Δ<i>I</i><i>p</i> = 1,04 µA/cm² to 1.06 µA/cm², with optimal current <i>I</i>p_a = 3.67 µA/cm² and <i>I</i>p_c = 4.15 µA/cm². On the other hand, this material shows a positive performance on the linearity of the scan rate, namely (R² &gt; 0.99). These results confirm that the selection of material precursors and synthesis methods during operation greatly determines the characteristics and electrochemical functions of CQDs. These findings not only demonstrate the potential of CQDs in improving the energy storage performance of batteries and the sensitivity of electrochemical sensors, but also open up great opportunities in the development of nanocarbon materials for future energy technologies and high-efficiency sensor devices.</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":"414 - 427"},"PeriodicalIF":2.8,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733105","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 Production of H2O2 Using COF Particle Electrodes with Co-Ni Bimetallic Sites","authors":"Tongxi Xu,&nbsp;Yuzhan Luo,&nbsp;Zihao Wang,&nbsp;Chenglong Wang,&nbsp;Hao Huo,&nbsp;Yaobin Huang,&nbsp;Weijin Zheng,&nbsp;Guangli Liu,&nbsp;Jiasheng Fang,&nbsp;Yanliang Li,&nbsp;Yongfu Qiu,&nbsp;Guofen Sun,&nbsp;Qiongfang Zhuo","doi":"10.1007/s12678-026-01007-2","DOIUrl":"10.1007/s12678-026-01007-2","url":null,"abstract":"<div><p>Hydrogen peroxide (H₂O₂) is a common and important oxidizing agent, which is widely used in environmental protection fields. In this study, the COF framework catalysts with nickel-cobalt bimetallic sites, Co@phthalocyanine (PcNi) - tetrahydroxybenzene (THB), were synthesized through the hydrothermal method. These catalysts were applied as the particulate electrodes in the electrocatalytic hydrogen peroxide (H₂O₂) generation system. Scanning electron microscope (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) were used to characterized the Co@PcNi-THB particle electrodes. Scanning electron microscope (SEM) images showed the Co@PcNi-THB particle electrodes featured the porous structure. The electrochemical active area of Co@PcNi-THB increased to (3.97 µF/cm²), which was 2.39 times higher than that of PcNi-THB catalyst (1.66 µF/cm²). The maximum H₂O₂ yield of 3340 µmol/g was obtained with the addition of Co@PcNi-THB catalyst content of 10 mg, current density of 15 mA/cm², pH 11.03, continuous stirring for 1 h at 200 r/min using a magnetic stirrer, and 0.1 M Na₂SO₄ electrolyte, with an energy consumption (EEC) of 3.201 kWh/kg. The acidic atmosphere, Cl⁻ and NO₃⁻ ions have the inhibitory effect on the H₂O₂ yields. After five cycles of Co@PcNi-THB, the H₂O₂ production decreased to 3153 µmol/g, and the retention ratio of Co in Co@PcNi-THB reduced to 94%. Under the same reaction conditions, the Faraday efficiency (FE) obtained using the gas diffusion electrode (GDE) for the Co@PcNi-THB method was 76.4%, and the hydrogen peroxide yield was 3885 µmol/g. The synergistic Co-Ni effect generated by the introduction of the metal Co enhanced the two-electron Oxygen Reduction Reaction (2e⁻ORR) process. This study provides new insights for designing particle electrodes with bimetallic atomic synergistic effects.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 2","pages":"349 - 362"},"PeriodicalIF":2.8,"publicationDate":"2026-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147371852","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":"Effect of Nickel Content on the Performance of Ni Electrocatalysts in the Glycerol Electrooxidation Reaction","authors":"Olga V. Cherstiouk,&nbsp;Pavel A. Simonov,&nbsp;Aleksey N. Kuznetsov,&nbsp;Olga A. Stonkus,&nbsp;Evgeny Yu. Gerasimov,&nbsp;Denis V. Kozlov","doi":"10.1007/s12678-025-01000-1","DOIUrl":"10.1007/s12678-025-01000-1","url":null,"abstract":"<div>\u0000 \u0000 <p>Ketjenblack supported Ni electrocatalysts (Ni/C) with nickel content from 20% to 70% were synthesized by the impregnation method using freeze-drying. Cyclic voltammetry, transmission and scanning electron microscopy were applied for characterization of the Ni electrocatalysts. The prepared samples were tested in the glycerol electrooxidation reaction in alkaline media along with Ni black and Ni rod. It turned out that the onset potentials of glycerol electrooxidation were notably lower for the supported Ni electrocatalysts than for Ni black and Ni rod. Among the supported Ni electrocatalysts, the sample with nickel content of 60% was found to be the most active. The onset potential for glycerol electrooxidation on 60% Ni/C is about 200 mV lower than the values reported in the literature.</p>\u0000 </div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 2","pages":"339 - 348"},"PeriodicalIF":2.8,"publicationDate":"2026-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147371866","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":"Microwave-Assisted Hydrothermal Synthesis of Ce-doped Fe2(MoO4)3 for Low Overpotential Electrocatalytic N2-to-NH3 Reduction","authors":"Lara Kelly Ribeiro,&nbsp;Laura Libero,&nbsp;Lucia Helena Mascaro,&nbsp;Frank Marken","doi":"10.1007/s12678-025-01001-0","DOIUrl":"10.1007/s12678-025-01001-0","url":null,"abstract":"<div><p>Developing efficient catalysts for the electrochemical nitrogen reduction reaction (NRR) under mild conditions remains a key challenge toward sustainable ammonia production. In this work, the microwave-assisted hydrothermal synthesis of Ce-doped Fe₂(MoO₄)₃ is reported as an effective and robust electrocatalyst for N₂ reduction. Structural (X-Ray Diffraction and Raman) and compositional characterization (Energy Dispersive Spectroscopy) confirmed the successful incorporation of nominally 2% cerium into the structure with a homogeneous distribution across the bulk catalyst without significantly altering the crystal structure. Electrochemical tests conducted in phosphate buffer (PBS, 0.1 mol L⁻¹, pH 7.0) saturated with N₂ demonstrated that the 2% Ce–Fe–Mo sample achieved the highest ammonia production: 12.8 µmol/L and 42% Faradaic efficiency for 2 h electrolysis at + 0.022 V vs. RHE. Normalization by mass and electrolysis time revealed that this low overpotential electrolysis effectively suppressing hydrogen evolution, provides a twofold increase in NH₃ production compared to similar processes reported at more negative overpotentials. Chronoamperometry (7 h) followed by post-electrolysis Raman spectroscopy confirmed electrochemical and structural stability under these conditions. The improved performance is attributed to the synergistic interaction between Mo and Ce facilitating N₂ adsorption and conversion. Ce-doped Fe–Mo oxides are promising candidates for ambient N₂-to-NH₃ conversion via electrochemical pathways, combining high efficiency, stability, affordability and significant cost-benefit advantage compared to noble-metal-based systems.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 2","pages":"325 - 338"},"PeriodicalIF":2.8,"publicationDate":"2026-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12678-025-01001-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147371853","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":"Rational Designed Biosensor for Melatonin Estimation in Biological Fluids Using Graphene Nanosheet Uniformly-Wrapped Ru Nanoparticles Supported Polydiaminonaphthalene/Taurine Matrix","authors":"Adel A. Abdelwahab,&nbsp;Salah Eid,&nbsp;Ahmed H. Naggar,&nbsp;A. M. Nassar,&nbsp;Yoon-Bo Shim","doi":"10.1007/s12678-025-01005-w","DOIUrl":"10.1007/s12678-025-01005-w","url":null,"abstract":"<div><p>A highly efficient and reliable electroanalytical biosensor for the estimation of melatonin (ME) employing pretreated graphene nanosheet uniformly-wrapped Ru nanoparticles (PTGNS/RuNPs) nanocomposite rational designed oxidized polydiaminonaphthalene/taurine (OPDAN/TA) has been performed. The OPDAN/TA/PTGNS/RuNPs nanocomposite biosensor has been characterized with numerous techniques, such as X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), electrochemical impedance spectroscopy (EIS) and Fourier transform infrared spectroscopy (FTIR). The PTGNS/RuNPs structure has been uniformly dispersed and influentially utilized into the OPDAN/TA that improves nanocomposite performance toward the estimation of ME. The nanocomposite biosensor not only inherits the electrochemical active surface area of PTGNS/RuNPs, while appears an excellent conductivity and electrocatalytic performance of the oxidized conducting copolymer PDAN/TA. A great and excellent sensitive achievement is conducted with the biosensor that was electropolymerized in deep eutectic solvents (DES) to improve catalytic effectives to ME with high influential charges transport voltammograms, while eliminated any biological interfering species. Furthermore, the nanocomposite biosensor was then utilized in the estimation of ME with the wide linear range from 1.0–160 μM, the limit of detection (LOD) and limit of quantitation (LOQ) of 0.015 ± 0.002 µM and 0.050 ± 0.002 µM with a sensitivity value of 4.2 μA μM^–1. The reproducibility and repeatability of the biosensor were also examined with the relative standard deviation (RSD) of 3.23 and 3.62, respectively. The high selectivity and stability of the OPDAN/TA/PTGNS/RuNPs biosensor to ME estimation may be because of the functionality and surface nature of the OPDAN/TA that was completely dispersed on the PTGNS/RuNPs nanocomposite. Finally, the proposed nanocomposite biosensor was operated successfully and applied to the analytical examination of ME in biological fluids samples.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 2","pages":"302 - 313"},"PeriodicalIF":2.8,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147371851","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":"Poly(cyanocobalamin)/ZnO Nanocomposite-Modified Screen-Printed Carbon Electrode: A Tool for Dopamine Detection","authors":"Suriya Devi Balasubramanian,&nbsp;Karthikeyan Rajendran,&nbsp;Anitha Mannarsamy,&nbsp;Prakash Subash","doi":"10.1007/s12678-025-01006-9","DOIUrl":"10.1007/s12678-025-01006-9","url":null,"abstract":"<div><p>An innovative electrochemical dopamine sensor was fabricated by integrating zinc oxide nanoparticles and poly(cyanocobalamin) onto a screen-printed carbon electrode. Utilizing almond gum as a reducing agent, a sustainable synthesis method yielded crystalline ZnO nanoparticles under ambient conditions. The nanocomposite-modified electrode was thoroughly characterized using state-of-the-art spectroscopic and microscopic techniques. Voltammetric analysis demonstrated a linear correlation between dopamine concentrations (100–600 µM) and electrochemical response, exhibiting a sensitivity of 1.3725 µAµM⁻¹cm⁻² and a detection limit of 1.6047 µM. The sensor’s performance was confirmed through successful real-sample analysis, showcasing its potential for practical utility. Comparative evaluation with our existing electrodes underscored the benefits of this novel approach.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 2","pages":"314 - 324"},"PeriodicalIF":2.8,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147371868","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":"Pyridinic-N Dominated Carbon Nanotubes With Varying Nitrogen Content for High-Efficient CO2 Electroreduction to CO","authors":"Chao Ju,&nbsp;Mingrui Li,&nbsp;Meng Huang,&nbsp;Teng Luo","doi":"10.1007/s12678-025-01003-y","DOIUrl":"10.1007/s12678-025-01003-y","url":null,"abstract":"<div><p>The rising demand for energy and environmental concerns necessitate sustainable CO₂ utilization. The electrochemical CO₂ reduction reaction (CO₂RR) has emerged as a promising approach for converting CO₂ into fuels and chemicals. The metal-free carbon materials with nitrogen doping have shown great potential in CO₂RR to produce CO, and pyridinic-N is widely believed to be the responsible active sites. The directed preparation of pyridinic-N dominated carbon and the finely regulation of nitrogen content should be vital for regulating the CO₂RR performance and exploring the catalytic mechanism, which are still challenging. This study developed nitrogen-doped carbon nanotubes (N-CNT) with pyridinic-N domination through pyrolysis of oxidized CNT (OCNT) under ammonia. The nitrogen contents of N-CNT were regulated by adjusting the time for acid-oxidizing treatment, ranging from 5 h to 24 h. N-CNT with oxidizing time of 24 h (N-CNT-24 h) demonstrates the highest nitrogen content and the greatest CO₂RR activity among the samples, with a maximum Faradaic efficiency (FE) of 95% for CO production, maintaining FE of 90% over 11 h of electrolysis. This research provides insights into selectively introducing Pyridinic-N into CNT and examines the effects of nitrogen doping on catalytic performance, contributing to the design of efficient metal-free carbon-based electrochemical catalysts for CO₂ reduction.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 2","pages":"291 - 301"},"PeriodicalIF":2.8,"publicationDate":"2026-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147371867","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}