Journal of Electroanalytical Chemistry最新文献

{"title":"Ti-doped LiMn0.5Fe0.5PO4/C cathode material and its performance for lithium-ion batteries","authors":"Yuan Ping ,&nbsp;Jianxiang Xing ,&nbsp;Hanlin Wei ,&nbsp;Minghui Li ,&nbsp;Jishun Yang ,&nbsp;Tinghai Yang ,&nbsp;Gang Yang","doi":"10.1016/j.jelechem.2025.119442","DOIUrl":"10.1016/j.jelechem.2025.119442","url":null,"abstract":"<div><div>Low-cost manganese-based lithium iron phosphate (LMFP) cathode materials have gained considerable research interest recently owing to their 15 % higher energy density compared to lithium iron phosphate (LiFePO₄). However, their poor electronic/ionic conductivity leads to unsatisfactory power performance, making it difficult to meet the demands of practical applications. In this work, we design a titanium-ion-doped LMFP cathode material with a hierarchical structure. The material comprises secondary spheres formed by the aggregation of nanosized primary particles, each of which is evenly encapsulated by a carbon layer. The carbon layer on the surface constructs a complete conductive network within the secondary particles, improving the electronic conductivity. Additionally, the nanostructured hierarchical design not only shortens the lithium-ion migration path but also prevents nanoparticle agglomeration during long-term cycling. This material also demonstrates good temperature adaptability (0–50 °C), with improved performance under extreme conditions. Consequently, the synthesized LMFP/C-1.5 %Ti demonstrates outstanding electrochemical characteristics, providing specific capacities of 152.66 mAh g⁻¹ and 88.3 % capacity maintenance at 0.1C. Meanwhile, LMFP/C-1.5 %Ti maintains excellent electrochemical performance at both low (0 °C) and high (50 °C) temperatures, delivering specific capacities of 152.8 mAh g⁻¹ and 167.8 mAh g⁻¹ at 0.1C, respectively.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"996 ","pages":"Article 119442"},"PeriodicalIF":4.1,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144931684","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":"Tailoring ultra-flexibility in eco-friendly conductive filaments: The use of polypropylene in the development of a 3D-printed carbon black-based electrochemical sensor","authors":"Lucas V. Bertolim ,&nbsp;Luiz R.G. Silva ,&nbsp;Jéssica Santos Stefano ,&nbsp;Bruno C. Janegitz","doi":"10.1016/j.jelechem.2025.119439","DOIUrl":"10.1016/j.jelechem.2025.119439","url":null,"abstract":"<div><div>This work presents a new approach for manufacturing flexible conductive filaments using carbon black nanoparticles, polypropylene, and polylactic acid (CB-PP-PLA) to develop ready-to-use 3D printed electrochemical sensors. The filament composition is ideal for producing ultra-flexible filaments due to the presence of polypropylene, eliminating the need for a plasticizer, which allows for easier and more robust sensor printing. The filament manufacturing route is simple and accessible, without the need for solvents or expensive equipment, and can be replicated in laboratories and places with less infrastructure. As a proof of concept, 3D-printed electrochemical sensors derived from the newly developed filament were used to detect quercetin (QCT) in honey samples. The produced conductive CB-PP-PLA filaments and electrodes underwent comprehensive characterization through various morphological, spectroscopic, thermoanalytical, and electrochemical methods. The sensor exhibited a robust response to QCT, demonstrating a linear range of 2.0–80.0 μmol L⁻¹ and a detection limit of 056 μmol L⁻¹. Furthermore, the new method is eco-friendly, with low cost, and it displayed recovery values close to 100 % in analyses of fortified honey samples, indicating the absence of matrix effects.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"996 ","pages":"Article 119439"},"PeriodicalIF":4.1,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144931703","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":"Label-free detection of Vibrio parahaemolyticus using a solid-state pH sensor","authors":"Jing Zhang ,&nbsp;Tengyu Li ,&nbsp;Lin Zhou ,&nbsp;Bin Su","doi":"10.1016/j.jelechem.2025.119444","DOIUrl":"10.1016/j.jelechem.2025.119444","url":null,"abstract":"<div><div><em>Vibrio parahaemolyticus</em> is a prevalent foodborne pathogen which can cause acute gastroenteritis, septicemia and even death. Therefore, rapid and accurate detection of <em>Vibrio parahaemolyticus</em> is of critical importance for ensuring food safety and public health. Herein, we report the development of a pH-ultrasensitive electrochemical sensor based on iridium oxide (IrO) for the real-time and label-free detection of <em>Vibrio parahaemolyticus</em>. The IrO was electrodeposited on the indium tin oxide (ITO) electrode using a silica nanochannel membrane as the template. The obtained IrO/ITO electrode functions as a solid-state pH sensor and displays a super-Nernstian response with a sensitivity over 78 mV/pH, enabling the effective detection of hydrogen ions released by hydrogel-based loop-mediated isothermal amplification (LAMP) and realizing the quantification of <em>Vibrio parahaemolyticus</em>. Owing to the confinement effect of the unique porous structure of hydrogel, the efficiency of LAMP reaction is significantly promoted, thus achieving the rapid detection of <em>Vibrio parahaemolyticus</em> within 30 min with a detection limit as low as 1.93 copies/reaction. Furthermore, the electrochemical sensor is fully sealed and free of aerosol contamination. We believe that the sensor can be potentially employed for the detection of other pathogens and in point-of-care testing diagnostics.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"997 ","pages":"Article 119444"},"PeriodicalIF":4.1,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997531","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":"Electrochemistry and electrochemiluminescence of benzopyrene and its nanoparticles","authors":"Hongfang Gao ,&nbsp;Ying Zhao ,&nbsp;Xiaolin Yang","doi":"10.1016/j.jelechem.2025.119443","DOIUrl":"10.1016/j.jelechem.2025.119443","url":null,"abstract":"<div><div>We systematically investigated the photophysical, electrochemical and electrochemiluminescence (ECL) behaviour of benzopyrene (BP), a representative polycyclic aromatic hydrocarbon composed of five fused benzene rings, as well as its organic nanoparticles (NPs). Cyclic voltammetry (CV) revealed that BP exhibited a reversible oxidation half-wave potential at +1.13 V and a reversible reduction half-wave potential at −1.94 V (vs. SCE), indicating its stable redox activity. Notably, BP demonstrated strong ECL emission during the reduction-oxidation process, producing a red-shifted spectrum with a broad tailing band spanning 500–750 nm, compared with its photoluminescence (PL) spectrum. To enhance its aqueous dispersibility and functionality, we developed well-dispersed and spherical BP NPs (2–8 nm in diameter) using a reprecipitation method. Key preparation parameters, including optimal good solvent selection, BP concentration in THF, THF/water volume ratio and dropwise addition time, were carefully optimized to ensure monodisperse BP NPs formation. Compared to molecular BP, the BP NPs exhibited a distinct red shift in absorption and a broad PL emission peak at 525 nm, likely due to nanoparticle-induced electronic interactions. Remarkably, the BP NPs displayed strong ECL emission in the presence of tri-n-propylamine (TPA) as a co-reactant, which was effectively quenched upon the addition of dopamine. The ECL intensity exhibited a linear response to dopamine concentration (0.10–10 μM), with a detection limit of 0.09 μM, highlighting their potential as efficient ECL probes for analytical applications. These findings not only advance the understanding of polycyclic aromatic hydrocarbon-based nanomaterials but also open new avenues for designing ECL-active nanostructures for biosensing and environmental monitoring.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"997 ","pages":"Article 119443"},"PeriodicalIF":4.1,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144933924","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":"Electrode configuration engineering in a photocatalytic fuel cell for enhanced dye removal and electricity generation","authors":"Mohammad Mohsenzadeh,&nbsp;Bita Ayati","doi":"10.1016/j.jelechem.2025.119412","DOIUrl":"10.1016/j.jelechem.2025.119412","url":null,"abstract":"<div><div>Photocatalytic fuel cells (PFCs) enable simultaneous wastewater treatment and energy recovery. This study systematically investigated the spatial configuration of electrodes—position, orientation, and distance—in a multi-electrode PFC. Anodic TiO₂ nanotube arrays (TNAs/Ti) and cathodic CuO/Cu, both synthesized via anodization, were arranged in six different configurations (S1–S6) and evaluated for acid orange 7 (AO7) removal and electricity generation. The results demonstrated that the heterogeneous configurations (S1 and S3) induced reverse currents from stronger to weaker anodes, which accelerated electron-hole recombination and increased the internal resistance to 600 Ω. In contrast, the homogeneous configuration (S5) minimized the average anode-cathode distance to 5.8 cm, suppressed reverse currents, and enhanced charge separation. This optimized configuration achieved 94.1 % decolorization over 16 h with a pseudo-first-order rate constant of 0.182 h⁻¹, a maximum power density of 11.6 mW m⁻², a short-circuit current density of 131 mA m⁻², and an internal resistance of 300 Ω. Performance was further enhanced under optimal conditions, including 50 mg L⁻¹ AO7, 0.1 M Na₂SO₄ electrolyte, pH 5.0, and 1000 Ω external resistance. Radical scavenging tests identified sulfate (SO₄·⁻), superoxide (Ȯ₂⁻), and hydroxyl (ȮH) radicals as primary reactive species with contributions of 35.4 %, 35.0 % and 24.9 %, respectively. Mineralization analyses confirmed 66.7 % COD and 50.5 % TOC removal, with the average oxidation state increasing from −1.4 to 0.4. The system maintained an efficiency of 94.1 % after 20 cycles, with negligible corrosion. These findings indicate that electrode configuration engineering is a crucial strategy for enhancing PFC efficiency.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"997 ","pages":"Article 119412"},"PeriodicalIF":4.1,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997529","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":"Biomimetic mineralization preparation of porous carbon materials for sodium ion storage","authors":"Abdulmajid Attam ,&nbsp;Zezhong Li ,&nbsp;Zhenjia Liu ,&nbsp;Yusheng Luo ,&nbsp;Yanpeng Wang ,&nbsp;Adel Al-Salihy ,&nbsp;Xiaomei Chen ,&nbsp;Wentao Yang ,&nbsp;Wei Liu","doi":"10.1016/j.jelechem.2025.119440","DOIUrl":"10.1016/j.jelechem.2025.119440","url":null,"abstract":"<div><div>Biomimetic mineralization serves as an efficient approach for designing and preparing nanomaterials. In this work, we developed a bioinspired mineralization approach under freezing conditions to fabricated sodium alginate (SA)/NaHCO₃ precursors with a sophisticated biomineralized structure. Based on this, a novel spring mattress-like porous carbon (SMPC) was synthesized after carbonization and removal of inorganic crystals. Benefiting from their open framework, large surface area, and enlarged interlayer spacing of graphitized nanocrystallites, the obtained SMPC exhibited an obvious boost in sodium storage performance. Among the synthesized variants, SMPC-3 exhibited the most balanced porous architecture, leading to a high reversible capacity of 374 mAh g⁻¹ and outstanding cycling stability with 121 mAh g⁻¹ retained after 3000 cycles at 2 A g⁻¹. When paired with activated carbon in a sodium-ion hybrid capacitor, the device delivered an energy density of 105 Wh kg⁻¹ at a power density of 200 W kg⁻¹ and retained 91.1 % of its capacity over 10,000 cycles. This work presents a straightforward and environmentally friendly approach towards the development of highly efficient carbon anodes suited for advanced sodium-ion energy storage systems.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"996 ","pages":"Article 119440"},"PeriodicalIF":4.1,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144921566","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":"Localized corrosion and degradation of PCB-ImAg in sulfur-containing environments: a comparative study with PCB-Cu","authors":"Qiang Jiang ,&nbsp;Liping Xiong ,&nbsp;Liang Qian ,&nbsp;Laizhao Ouyang ,&nbsp;Jian Liu ,&nbsp;Lili Li ,&nbsp;Yayu Dong ,&nbsp;Zhongyi He","doi":"10.1016/j.jelechem.2025.119416","DOIUrl":"10.1016/j.jelechem.2025.119416","url":null,"abstract":"<div><div>This study investigates the dynamic electrochemical corrosion behavior of copper-clad (PCB-Cu) and immersion silver (PCB-ImAg) circuit boards in a 0.1 mol/L NaHSO₃ solution. PCB-Cu exhibits continuous and rapid corrosion, characterized by the formation of porous copper sulfides and oxides, with its corrosion rate steadily increasing over time. In contrast, PCB-ImAg undergoes a complex, multi-stage degradation. Initially, a partially protective Ag₂S layer forms, showing an early positive shift in <em>E</em>_{<em>corr</em>} and a temporary reduction in <em>I</em>_{<em>corr</em>}, indicating film maturation. However, inherent microdefects in the immersion silver coating act as initiation sites, driving accelerated localized galvanic corrosion between silver and the exposed copper substrate. This leads to a progressive increase in overall corrosion rate, culminating in a distinct negative shift in <em>E</em>_{<em>corr</em>} and a drastic surge in <em>I</em>_{<em>corr</em>} at 168 h, signifying ultimate protective breakdown and accelerated corrosion. EIS, Raman, and XPS analyses confirm a dynamic film evolution, severe structural degradation, and the dominance of Cu₂S as a late-stage corrosion product, contributing to mechanical delamination. This work provides critical insights into the interplay of microstructural defects, film dynamics, and galvanic coupling governing PCB reliability in sulfur-rich environments.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"997 ","pages":"Article 119416"},"PeriodicalIF":4.1,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997528","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":"Faceted nanostructured tellurium for non-enzymatic hydrogen peroxide sensing: Experimental and theoretical investigation","authors":"J.P. Chaandini ,&nbsp;Kenil Rajpura ,&nbsp;Indrajit Mukhopadhyay","doi":"10.1016/j.jelechem.2025.119438","DOIUrl":"10.1016/j.jelechem.2025.119438","url":null,"abstract":"<div><div>A new enzyme-free sensor has been designed on a copper substrate, utilizing faceted nanostructured tellurium (NSTe) to achieve highly selective and sensitive detection of hydrogen peroxide (H₂O₂). NSTe was effectively electrodeposited onto a copper substrate (0.36 cm²) from an aqueous electrolyte at ambient conditions. Growth kinetics and morphological changes at the underpotential deposition (UPD) region were analyzed using high-resolution field-emission scanning electron microscopy (FESEM). The phase purity of NSTe was analyzed using X-ray diffraction (XRD). The reactivity of prominent planes (102,111) obtained from XRD was compared theoretically. Elemental composition, along with the chemical state of the material, was identified from X-ray photoelectron spectroscopy (XPS). The electrocatalytic performance was studied using cyclic voltammetry (CV) and chronoamperometry (CA) in the phosphate buffer saline (PBS) of pH 7 to explore the non-enzymatic sensing properties of H₂O₂ by the NSTe thin film. A distinct reduction peak for H₂O₂ is observed when it interacts with the NSTe catalyst. Acting as a conductive bridge, NSTe enables direct electron transfer between the modified electron and the substrate, eliminating the need for an external mediator. The NSTe film, deposited at −0.013, −0.015, and − 0.02 V, exhibits sensitivity of 1177.14 ± 0.06, 1791.43 ± 0.11, and 1030.00 ± 0.04 μA mM⁻¹ cm⁻² towards H₂O₂, respectively. The highly sensitive electrode exhibits a wide linear detection range of 1.25 μM to 5 mM for H₂O₂, with a correlation coefficient of 0.978 and a response time of less than 6 s. The adsorption behavior and subsequent decomposition of H₂O₂ to water and oxygen were examined using theoretical methods. The developed sensor possesses good selectivity, stability, and reproducibility, which makes it useful for practical applications.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"996 ","pages":"Article 119438"},"PeriodicalIF":4.1,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144931683","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":"N/O/B-doped phenolic resin-based high-performance porous carbon materials for supercapacitor applications","authors":"Yan Ma ,&nbsp;Peng Zeng ,&nbsp;Yan Ma ,&nbsp;Xiaomei Yang","doi":"10.1016/j.jelechem.2025.119434","DOIUrl":"10.1016/j.jelechem.2025.119434","url":null,"abstract":"<div><div>Supercapacitors have been extensively studied for their excellent power density and cycle life, but they are limited by low energy density. This study successfully prepared nitrogen/oxygen/boron (N/O/B) co-doped phenolic resin-based porous carbon materials (NBC) through a sol-gel method combined with high-temperature carbonization and activation processes, and systematically investigated their electrochemical performance in supercapacitors. By adjusting the amount of boric acid and the carbonization temperature, the pore structure and heteroatom doping levels of the materials were optimized. Experimental results demonstrate that when the carbonization temperature is 700 °C and the mass ratio of L-tyrosine to boric acid is 1:1, the obtained sample NBC-700-1 exhibits a high specific surface area (1721 m² g⁻¹), an abundant micro/mesoporous hierarchical structure, and uniform N/O/B doping (N content: 8.31 at.%, O content: 14.11 at.%, B content: 0.55 at.%). In a three-electrode system, NBC-700-1 (377 F g⁻¹) exhibits superior specific capacitance, high rate performance (73% capacitance retention at 20 A g⁻¹), and long cycle stability at 0.5 A g⁻¹ in 6 M KOH electrolyte compared to NBC-600-1 (300 F g⁻¹), NBC-700-0.5 (290 F g⁻¹), NBC-700-2 (268 F g⁻¹), and NBC-800-1 (351 F g⁻¹). Furthermore, a symmetric supercapacitor assembled with Na₂SO₄ gel electrolyte achieves an energy density of 29.9 Wh kg⁻¹ at a power density of 550 W kg⁻¹, along with broad temperature adaptability (−25 to 75 °C) and remarkable flexibility (no significant performance degradation after 180° bending). Additionally, the design of a PVA-based gel electrolyte with wide pH applicability provides new insights for the application of such devices in complex environments.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"996 ","pages":"Article 119434"},"PeriodicalIF":4.1,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913987","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":"Electrochemical fabrication of polyRhodamine B film and Pt nanosheets on Ni foam for enhancing electrochemical detection activities of ammonia‑nitrogen","authors":"Xinyue Wang,&nbsp;Yingying Huang,&nbsp;Yifan Zhang,&nbsp;Yue Han,&nbsp;Yankun Zhang,&nbsp;Jiali Gu,&nbsp;Liang Zhang","doi":"10.1016/j.jelechem.2025.119433","DOIUrl":"10.1016/j.jelechem.2025.119433","url":null,"abstract":"<div><div>Accurate and rapid detection of ammonia nitrogen concentration has been become of great significance for protecting water resources and water resource restoration. Therefore, in this work, we intend to design one high-performance electrochemical sensor for ammonia‑nitrogen detection. Specifically, poly(Rhodamine B) film is electrodeposited on the surface of Ni foam via cyclic voltammetry technique, and then Pt nanosheets are electrodeposited on the surface of poly(Rhodamine B) film. The morphology and composition are characterized by ultraviolet-visible spectrophotometer, scanning electron microscope, X-rays diffractometry, X-ray photoelectron spectroscopy. The deposition process of poly (Rhodamine B) film and Pt nanosheets are controlled. The electrocatalytic measurements results of ammonia oxidation reaction indicate that the sample obtained with the cycle of 50 and the deposition time of 2000 s shows the biggest oxidation peak current with the value of 75.34 mA. Other electrocatalytic performances are also discussed. Furthermore, the electrochemical detection activities are measured and achieved a low limit of detection (1.182 μM) and high sensitivity (16.5 μA μM⁻¹), good recoveries in tap water, lake water and sea water, great selectivity and stability. Above great detection performances can be attributed to: 1) the introduction of poly (Rhodamine B) film effectively avoid the etch of Ni foam and provided one better platform for growth of Pt nanosheets, 2) more active sites are yielded owing to the sheet-like morphology of Pt.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"996 ","pages":"Article 119433"},"PeriodicalIF":4.1,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913985","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}