{"title":"Disposable nanodiamond/graphene-based electrochemical sensor for determination of rhodium and platinum in electroplating process","authors":"Adison Meoipun , Piyada Jittangprasert , Sucheewin Chotiwit , Orawon Chailapakul , Weena Siangproh","doi":"10.1016/j.jelechem.2025.119506","DOIUrl":"10.1016/j.jelechem.2025.119506","url":null,"abstract":"<div><div>This study introduces a novel disposable sensor platform for the first time by utilizing a nanodiamond-modified screen-printed graphene electrode (ND/SPGE) to achieve highly sensitive and selective determination of rhodium (Rh<sup>II</sup>) and platinum (Pt<sup>II</sup>) ions in industrial electroplating solutions. The ND/SPGE synergistically enhances electron transfer and surface interaction with target ions, allowing differential pulse anodic stripping voltammetry (DPASV) to obtain detection limits (LOD = 3S/N) of 0.35 ppm for Rh<sup>II</sup> and 0.52 ppm for Pt<sup>II</sup> with linear responses in the ranges of 7.5–75 ppm for Rh<sup>II</sup> and 12.5–85 ppm for Pt<sup>II</sup>. The sensor exhibits excellent selectivity in the presence of common interfering ions and demonstrates high accuracy with acceptable recovery (95 % and 105 %) and reproducibility (RSD < 5 %). These results highlight the potential of employing a ND/SPGE sensor as a reliable device for real-time monitoring and quality control of Rh<sup>II</sup> and Pt<sup>II</sup> concentrations in industrial electroplating processes. Therefore, this work offers a practical, cost-effective sensing platform for in-situ monitoring of precious metals in plating operations, aligning with the need for sustainable and efficient process control in metal finishing industries.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"997 ","pages":"Article 119506"},"PeriodicalIF":4.1,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Ultrathin Fe2O3 nanosheet-enhanced molecularly imprinted photoelectrochemical sensor for ultrasensitive detection of imidacloprid pesticide","authors":"Hao Li, Yuwei Zhao, Yuting Kui, Yiting Wang, Ruiying Zhang, Xiaosi Sang, Jingli Shen, Qiue Cao","doi":"10.1016/j.jelechem.2025.119494","DOIUrl":"10.1016/j.jelechem.2025.119494","url":null,"abstract":"<div><div>Herein, a novel molecularly imprinted photoelectrochemical (MIP-PEC) sensor was fabricated through integrating the ultrathin nanosheets of Fe<sub>2</sub>O<sub>3</sub> (Fe<sub>2</sub>O<sub>3</sub> NSs) with molecular imprinting technology for the ultrasensitive detection of imidacloprid (IMD). Impressively, the two-dimensional Fe<sub>2</sub>O<sub>3</sub> NSs was synthesized on an indium‑tin oxide (ITO) substrate by electrodeposition. Benefiting from its narrow bandgap and large specific surface area, the photogenerated charge separation efficiency of Fe<sub>2</sub>O<sub>3</sub> NSs (∼ 600 μA) was remarkably enhanced compared to that of the commercial Fe<sub>2</sub>O<sub>3</sub> nanoparticles (∼150 μA), which significantly improved the sensitivity of the developed MIP-PEC sensor. Furthermore, the electropolymerization technique was used to form a molecularly imprinted polymer film of IMD on the surface of Fe<sub>2</sub>O<sub>3</sub> NSs/ITO, substantially increased the detection selectivity of the proposed sensor. As a result, the designed MIP-PEC sensor successfully achieved ultrasensitive and specific as well as reliable detection of IMD with a broad linear response (5 nM ∼ 120 μM), low detection limit (1.02 nM) and long storage time (the signal only decreased by 5.03 % after 4 weeks of storage). The recoveries and relative standard deviation (RSD) for the determination of IMD in fruits and environmental water samples by the obtained MIP-PEC were in the range of 92.0 % ∼ 108.0 % and 3.2 % ∼ 4.9 % respectively, validating its field-applicability. Obviously, this work established a novel paradigm for synergistic enhancement of the analysis performance of PEC through integration of the advanced photosensitive materials with molecular imprinting technology.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"997 ","pages":"Article 119494"},"PeriodicalIF":4.1,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hua Yan , Ying Lei , Qing-lin Pan , Pei-yao Li , Jun-chao Zheng
{"title":"Mitigating mechanical degradation of single-crystal Ni-rich LiNi0.72Co0.05Mn0.23O2 via surface Ta-rich gradient doping","authors":"Hua Yan , Ying Lei , Qing-lin Pan , Pei-yao Li , Jun-chao Zheng","doi":"10.1016/j.jelechem.2025.119497","DOIUrl":"10.1016/j.jelechem.2025.119497","url":null,"abstract":"<div><div>Single-crystal nickel-rich layered oxides, LiNi<sub><em>x</em></sub>Co<sub><em>y</em></sub>Mn<sub>1-<em>x</em>-<em>y</em></sub>O<sub>2</sub> (SC-NCM, x ≥ 0.7), can effectively mitigate intergranular microcracks and parasitic reactions with the electrolyte commonly observed in polycrystalline cathodes. However, the large particle size of single crystals leads to issues such as structural mechanical degradation and sluggish lithium-ion diffusion kinetics. To overcome these challenges, we propose a surface-enriched ta gradient doping strategy in single-crystal LiNi<sub>0.72</sub>Co<sub>0.05</sub>Mn<sub>0.23</sub>O<sub>2</sub>, which promotes the in-situ formation of a perovskite-type LiTaO<sub>3</sub> surface layer, providing a stable interface for rapid lithium-ion migration. Benefiting from the synergistic effect of the LiTaO<sub>3</sub> layer and bulk Ta<sup>5+</sup> doping, electrolyte corrosion and the detrimental surface H2-H3 phase transition are significantly suppressed, thereby reducing the formation of intragranular microcracks and mitigating the structural mechanical degradation of SC-NCM during cycling. As a result, the optimized Li(Ni<sub>0.72</sub>Co<sub>0.05</sub>Mn<sub>0.23</sub>)<sub>0.98</sub>Ta<sub>0.02</sub>O<sub>2</sub> delivers a high discharge capacity of 195.1 mAh g<sup>−1</sup> at 0.1C and retains 85.5 % of its capacity after 200 cycles at 1C. This work provides a promising strategy to alleviate the structural mechanical degradation of SC-NCM cathodes.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"997 ","pages":"Article 119497"},"PeriodicalIF":4.1,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Junxiang Zhou , Tongxin Li , Zihan Guo , Yong Sun , Bo Feng , Jiachen Guo
{"title":"3D multi-scale hierarchical nanoflower design of bionic rose: Mesoporous Ni-Mn-Co-O anode and its derivative LiNi1/3Co1/3Mn1/3O2 cathode boosting high-property Lithium-ion batteries","authors":"Junxiang Zhou , Tongxin Li , Zihan Guo , Yong Sun , Bo Feng , Jiachen Guo","doi":"10.1016/j.jelechem.2025.119502","DOIUrl":"10.1016/j.jelechem.2025.119502","url":null,"abstract":"<div><div>Constructing complex micro-nano morphologies via bionic technology is an effective strategy to enhance the electrochemical properties of electrode materials. Firstly, we present the bionic design, preparation processes, and electrochemical properties of 3D Ni-Mn-Co-O nanoflowers (NMCO-NF) as a conversion anode material for lithium-ion batteries. Furthermore, an integrated electrode is constructed using NMCO-NF supported by Ni foam (NMCO/Ni-NF). Benefited from the hierarchical structure design, the NMCO/Ni-NF can not only effectively alleviate the large volume changes during cycling but also provide three scale paths for lithium-ion (Li<sup>+</sup>) transmission, which makes it exhibit excellent electrochemical properties, that is, 1052 mAh g<sup>−1</sup> in an average charge capacity and 76.42 % in capacity retention ratio after 150 cycles at 1 A g<sup>−1</sup>. Meanwhile, the 2D dynamic growth process of a simple rose structure on a current collector is simulated by a Python program, and the micro-nano structure evolution process of NMCO-NF in the hydrothermal reaction is visualized. Finally, mesoporous LiNi<sub>1/3</sub>Co<sub>1/3</sub>Mn<sub>1/3</sub>O<sub>2</sub> nanoflowers (LNCMO-NF) are successfully synthesized by taking 3D NMCO-NF as a sacrificial template. The feasibility of constructing complex multi-scale structures in a ternary cathode system is verified by experimental means.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"997 ","pages":"Article 119502"},"PeriodicalIF":4.1,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wan-Yue Zhuang , Zi-Yi Wang , Xingdong Yang , Jun-Qin Qiao , Wei-Juan Zheng , Hong-Zhen Lian
{"title":"Facile electrochemical assay of thrombin activity in biological products","authors":"Wan-Yue Zhuang , Zi-Yi Wang , Xingdong Yang , Jun-Qin Qiao , Wei-Juan Zheng , Hong-Zhen Lian","doi":"10.1016/j.jelechem.2025.119500","DOIUrl":"10.1016/j.jelechem.2025.119500","url":null,"abstract":"<div><div>Thrombin, a critical protein-based therapeutic agent, is widely used in modern medicine. Precise quantification of thrombin enzymatic activity represents a fundamental requirement for both manufacturing quality control and clinical therapeutic monitoring. Here, we developed a “signal-off” electrochemical method for the rapid detection of thrombin activity within 15 min. A thrombin-specific substrate peptide was anchored to a gold electrode via Au<img>S bonds at its C-terminal, with an N-terminal ferrocene (Fc) tag as a redox probe. A cellulose acetate (CA) membrane was added to reduce contamination and signal loss. The detection mechanism relies on thrombin-mediated peptide cleavage, detaching the Fc-tagged fragment and generates a decreasing current proportionally to enzyme activity. The detection limit of the described method is 81.1 U/mL, with a linear response over the range of 200–1500 U/mL (R<sup>2</sup> = 0.9941), satisfying the quality control requirements for commercial thrombin drugs. This biosensing strategy combines operational simplicity with analytical reliability, showing significant potential for rapid and efficient assessment of thrombin biological products activity.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"997 ","pages":"Article 119500"},"PeriodicalIF":4.1,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"High-performance multimetal broccoli-like structure MnMoO4/CoWO4/NF nanocomposite as a bifunctional electrocatalyst for efficient water splitting","authors":"Chou-Yi Hsu , Waqed H. Hassan , Egambergan Khudoynazarov , Syed Waheedullah Ghori , Doniyor Jumanazarov , Sridharan Sundharam , Sanjeev Kumar , A.M.A. Mohamed , M.A. Diab , Heba A. El-Sabban , Ibrahm Mahariq","doi":"10.1016/j.jelechem.2025.119503","DOIUrl":"10.1016/j.jelechem.2025.119503","url":null,"abstract":"<div><div>Developing high-performance bifunctional water-splitting electrocatalysts is attractive for sustainable energy applications, yet significant challenges remain. Enhancing interfacial properties within heterostructured metal oxide composites offers a pathway to overcoming these limitations, such as the high cost of precious metal benchmarks and suboptimal reaction kinetics caused by intrinsic scaling relationships, by optimizing charge transport and reaction energetics. Designing advanced nanostructures with synergistic interactions between components can lower energy barriers and improve catalyst performance. In this work, a broccoli-like MnMoO₄/CoWO₄/NF nanocomposite was synthesized via a hydrothermal method. This heterostructured electrocatalyst features an engineered crystalline interface layer and leverages the synergistic effects among the multimetal oxide components. Density functional theory (DFT) calculations were employed to analyze the electronic properties, including the density of states near the Fermi level and Gibbs free energy changes (ΔGH*, ΔGO*, ΔGOH*, ΔGOOH*) for key intermediates involved in water splitting reactions. The MnMoO₄/CoWO₄/NF electrocatalyst exhibited exceptional bifunctional catalytic activity, requiring overpotentials of 258 mV for the oxygen evolution reaction (OER) and 42 mV for the hydrogen evolution reaction (HER) to reach a current density of 10 mA·cm<sup>−2</sup>. The material demonstrated outstanding stability over 150 h of chronopotentiometry testing. The combination of experimental results and DFT analysis confirms the effectiveness of the interface engineering strategy in promoting superior catalytic performance for overall water electrolysis.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"997 ","pages":"Article 119503"},"PeriodicalIF":4.1,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lihua He , Lanlan Huang , Shijun Nie , Mingli Li , Hongliang Peng , Jing Ni , Xiaolei Hu , Xiaoqian Fu , Jingfeng Du , Bingqing Zhang
{"title":"Construction of self-powered sensor based on Fe2O3/NiO photoanode for hydroperoxide detection and solar electricity production","authors":"Lihua He , Lanlan Huang , Shijun Nie , Mingli Li , Hongliang Peng , Jing Ni , Xiaolei Hu , Xiaoqian Fu , Jingfeng Du , Bingqing Zhang","doi":"10.1016/j.jelechem.2025.119495","DOIUrl":"10.1016/j.jelechem.2025.119495","url":null,"abstract":"<div><div>Photoelectrochemical (PEC) sensor has been developed as an advanced analysis on account of the merits of potential high sensitivity, simple equipment, easy operation and low cost. Herein, a three-electrode PEC sensor is designed by applying NiO modified hematite (α-Fe<sub>2</sub>O<sub>3</sub>) nanorod photoanode as working electrode, and the device shows a sensitivity of 678.88 μA cm<sup>−2</sup> mM<sup>−1</sup> for the detection of hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) within 0.01–1.2 mM, with a linear correlation coefficient of 0.997, respectively. Besides, the PEC sensor also possesses good stability, strong anti-interference and practical application capability for H<sub>2</sub>O<sub>2</sub> determination. Furthermore, a self-powered sensor is fabricated by a two-electrode system consisting of Fe<sub>2</sub>O<sub>3</sub>/NiO and Pt sheet, which realizes a maximum electricity production of 110.0 μW cm<sup>−2</sup> and shows a detection sensitivity of 36.19 μW cm<sup>−2</sup> mM<sup>−1</sup> for H<sub>2</sub>O<sub>2</sub> analyte without external electricity inputting. The sensing performance is as twice as higher than the H<sub>2</sub>O<sub>2</sub> detected on the pure Fe<sub>2</sub>O<sub>3</sub>-based sensor; it is because the modification of NiO on Fe<sub>2</sub>O<sub>3</sub> surface could suppress the photo-generated carriers recombination, promote the charge separation efficiency and accelerate the surface catalytic kinetics for H<sub>2</sub>O<sub>2</sub> oxidation.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"997 ","pages":"Article 119495"},"PeriodicalIF":4.1,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Multifunctional cobalt heterostructure-graphite hybrid anode with superior cyclability for Li/Na-ion storage","authors":"Lichen Zhang , Yi Wei , Yihong Ding , Tianbiao Zeng , Dong Feng","doi":"10.1016/j.jelechem.2025.119496","DOIUrl":"10.1016/j.jelechem.2025.119496","url":null,"abstract":"<div><div>The research and development of novel materials for advanced lithium-ion (LIBs) and sodium-ion batteries (SIBs) are of paramount importance. Sulfide-based anode materials offer notable advantages, including high specific capacity and favorable cycling stability. The Co<sub>3</sub>Sn<sub>2</sub>S<sub>2</sub>/Co<sub>9</sub>S<sub>8</sub>/Co (CSS-3) heterostructure was facilely synthesized via a vacuum thermal process and combined with graphite to form the CSS-3/G-15 % composite anode for both LIBs and SIBs. The uniform nano-heterostructure effectively mitigates volume expansion, promotes efficient electrolyte infiltration, and enhances ion and electron transport. Graphite incorporation prevents nanoparticle agglomeration, improving conductivity and providing a protective buffer to prevent degradation. In LIBs, CSS-3/G-15 % delivers a high specific capacity of 483.1 mA h g<sup>−1</sup> after 250 cycles at 0.1 A g<sup>−1</sup> and retains 529.2 mA h g<sup>−1</sup> after 1000 cycles at 1 A g<sup>−1</sup>. At various current densities, it maintains impressive capacities (564.1 mA h g<sup>−1</sup> at 0.1 A g<sup>−1</sup> to 152.6 mA h g<sup>−1</sup> at 10 A g<sup>−1</sup>). In SIBs, CSS-3/G-15 % shows stable performance, with a capacity of 181.7 mA h g<sup>−1</sup> after 500 cycles at 1 A g<sup>−1</sup>. This approach offers new insights into anode material design, advancing both LIB and SIB technologies.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"997 ","pages":"Article 119496"},"PeriodicalIF":4.1,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shiliang Zhang , Kaiyu Qi , Baoshuai Du , Gengzeng Zhu , Xiaoyan Liu , Bangwen Zhang
{"title":"Reduced graphene oxide supported Ni-doped MoS2 nanosheets with enhanced lithium-ion storage performance","authors":"Shiliang Zhang , Kaiyu Qi , Baoshuai Du , Gengzeng Zhu , Xiaoyan Liu , Bangwen Zhang","doi":"10.1016/j.jelechem.2025.119501","DOIUrl":"10.1016/j.jelechem.2025.119501","url":null,"abstract":"<div><div>Rechargeable LIBs have been playing the dominant role in the market of consumer electronics, electric vehicles, and grid storage. At present, graphite, as a traditional anode material, cannot meet the requirements of high-energy-density LIBs due to its low theoretical specific capacity (372 mAh g<sup>−1</sup>). Here, we report Ni-MoS<sub>2</sub>/rGO composites synthesized by a ligand-assisted hydrothermal method, in which curled Ni-doped MoS<sub>2</sub> nanosheets (Ni-MoS<sub>2</sub>) grown on reduced graphene oxide (rGO) had a loose thin-layered microstructure with high electrochemical activities, ensuring excellent lithium-ion storage performance of the composites. Benefitting from high electrochemical activities of the Ni-MoS<sub>2</sub> and high conductivity of the rGO, the Ni-MoS<sub>2</sub>/rGO composites exhibited high reversible capacitance and fast reaction kinetics. As a result, a high capacity of reversible lithium-ion storage up to 995 mAh g<sup>−1</sup> (after 100 cycles) and a good rate capability were achieved by the Ni-MoS<sub>2</sub>/rGO composites.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"997 ","pages":"Article 119501"},"PeriodicalIF":4.1,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ademar Wong , Anderson M. Santos , Maria H.A. Feitosa , Fernando C. Moraes , Maria D.P.T. Sotomayor
{"title":"Innovative electrochemical detection of emerging pollutants using MXene and carbon nanofiber modified screen-printed electrodes","authors":"Ademar Wong , Anderson M. Santos , Maria H.A. Feitosa , Fernando C. Moraes , Maria D.P.T. Sotomayor","doi":"10.1016/j.jelechem.2025.119493","DOIUrl":"10.1016/j.jelechem.2025.119493","url":null,"abstract":"<div><div>Disposable screen-printed electrodes based on carbon ink modified with MXene, and carbon nanofibers were developed as a cost-effective and simple electroanalytical platform for the sensitive detection of acid red 1 (AR) and carbaryl (CAR) in environmental samples. The electrochemical properties of the analytes were examined by cyclic voltammetry in the potential range of 0–1.2 V and at a scan rate of 50 mV s<sup>−1</sup> using 0.10 mol L<sup>−1</sup> phosphate buffer solution (pH 7.0) as the supporting electrolyte. During the anodic potential scan, two oxidation peaks were found at the potentials of 0.55 V and 1.05 V. Under optimized square wave voltammetry (SWV) conditions, the screen-printed sensor was used to construct an analytical curve with linear concentration ranges of 6.2 × 10<sup>−7</sup> to 7.2 × 10<sup>−6</sup> mol L<sup>−1</sup> for AR and 2.0 × 10<sup>−6</sup> to 3.9 × 10<sup>−5</sup> mol L<sup>−1</sup> for CAR, while the limits of detection for AR and CAR were determined to be 1.2 × 10<sup>−7</sup> and 5.2 × 10<sup>−7</sup> mol L<sup>−1</sup>, respectively. The screen-printed sensor was found to be highly selective, sensitive, stable, reproducible, and repeatable, while also being cost-effective and unaffected by the effects of potential interferents. The proposed sensor was successfully applied for the analysis of environmental samples, where it recorded recovery rates close to 100 %.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"997 ","pages":"Article 119493"},"PeriodicalIF":4.1,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}