Electrochimica Acta最新文献

{"title":"Highly Selective Cobalt-MOF/Vanadium Carbide MXene Hydrogel for Simultaneous Electrochemical Determination of Levothyroxine and Carbamazepine in Simulated Blood Serum","authors":"Manaswini Ravipati, Divyasri Ramasamy, Sushmee Badhulika","doi":"10.1016/j.electacta.2025.146154","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.146154","url":null,"abstract":"The accurate and simultaneous detection of Levothyroxine (LT4) and carbamazepine (CBZ) in biological samples remains a critical challenge in biomedical sensing, given the need for high sensitivity, selectivity, and stability in complex biological environments. This work presents the synthesis and electrochemical characterization of a novel MOF-71/V₂C MXene-based hydrogel (Cobalt Metal-Organic Framework/Vanadium Carbide MXene) as an advanced sensor for the concurrent and simultaneous detection of Levothyroxine (LT4) and Carbamazepine (CBZ). The MOF-71/V₂C MXene-based Hydrogel is synthesized using a solvothermal technique and subsequent freeze-drying process. Structural characterization studies confirm a stable, porous interconnected layered architecture with a high surface area, facilitating effective interaction with target analytes. XRD (X-ray Diffraction) and CA (Contact Angle) analysis validate the crystalline and hydrophilic character of the material, respectively. The MOF-71/V₂C MXene-based hydrogel sensor exhibits a wide linear detection range (10 nM to 100 µM for LT4 & 10 nM to 500 µM for CBZ), excellent selectivity against prevalent interfering species, i.e., Dopamine, Tyrosine, glucose (GLU), urea, Mg²⁺, Ca²⁺, prevalent in biological fluids, and a low detection limit (LOD) of 5.6 nM for LT4 and 6.7 nM for CBZ. In addition, MOF-71/V₂C MXene hydrogel showed outstanding electrochemical stability and high reproducibility with RSDs of 1.65% for LT4 and 2.81% for CBZ, ensuring stable long-term performance. These results underscore the utility of the MOF-71/V₂C MXene-hydrogel as a high-sensitivity electrochemical sensor for therapeutic drug monitoring. Its highly hydrophilic and porous structure presents an electrochemical reaction-facilitating environment such that the sensor retains high sensitivity even in biologically complex matrices like blood serum. The adaptability of the hydrogel also presents favorable possibilities for incorporation in flexible and wearable electrochemical devices, presenting an important contribution in the area of biomedical sensing.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"28 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Boosted electrochemical performance of sodium-ion batteries via Sn-Fe binary metal sulfides as anode materials","authors":"Yilin Wang ,&nbsp;Xiaotian Yang ,&nbsp;Shengjun Yuan ,&nbsp;Ting Hu ,&nbsp;Hao Xie ,&nbsp;Fan Yang ,&nbsp;Qiaolin Ren ,&nbsp;Qiming Liu","doi":"10.1016/j.electacta.2025.146148","DOIUrl":"10.1016/j.electacta.2025.146148","url":null,"abstract":"<div><div>The escalating demand for sustainable energy storage solutions has intensified the pursuit of advanced sodium-ion batteries (SIBs) as a cost-effective alternative to lithium-ion batteries. Central to this endeavor is the development of high-performance anode materials. In this study, we synthesized Sn-Fe binary metal sulfides as a promising anode material for SIBs, focusing on enhancing electrochemical performance through the modulation of Sn/Fe ratios. We discovered that adjusting the Sn/Fe composition not only optimizes the electrochemical activity window in half-cells but also significantly boosts the energy density in full-cell configurations. The synthesized Sn-Fe sulfides demonstrated superior capacity of 117.8 mAh g⁻¹ at 0.1C after 100 cycles, attributes pivotal for the practical application of SIBs. Our findings underscore the potential of Sn-Fe binary metal sulfides as a viable anode material for next-generation SIBs, offering a pathway to improved energy storage technologies. This work provides insights into the design principles for advanced anode materials and paves the way for further material optimization and applications in sodium-ion battery systems.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"525 ","pages":"Article 146148"},"PeriodicalIF":5.5,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced Anodic Stripping Voltammetric Detection of Cd(II) Using a Glassy Carbon Electrode Modified with N, N-Dimethyl-1-Aminoanthraquinone Decorated Nickel Ferrite and Graphene Oxide Sheets","authors":", Randeep Kaur, Shweta Rana, Navneet Kaur","doi":"10.1016/j.electacta.2025.146122","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.146122","url":null,"abstract":"The study demonstrates the fabrication of <strong>DNG</strong> via a sonochemical route from an anthraquinone-based compound (N,N-dimethyl-1-amino-anthraquinone) intricately combined with nickel ferrite-embedded graphene oxide and tailored for the electrochemical sensing of hazardous Cd²⁺ ions. Structural (Raman, XRD) and morphological (FE-SEM and HRTEM) studies confirm the successful fabrication of nanocomposite. Herein, an anthraquinone derivative (<strong>DAAQ</strong>) serves as a key functional group, offering abundant binding sites further amplified by the synergistic interaction between NF (distinguished by its substantial surface area) and <strong>GO</strong> (renowned for its exceptional electrical conductivity). The charge transfer resistance, electrochemically active surface area, and electron transport pathways at the electrode-electrolyte interface were all better understood by CV and EIS analysis. The sensing platform demonstrated SWASV determination of Cd²⁺ within the concentration range of 0.1 to 8 μM with a quantification limit of 8.0 nM and an outstanding detection limit of 2.5 nM. High sensitivity (5.78 mA μM^-1) and remarkable reproducibility (RSD ∼ 2.39%) of stable DNG electrodes for targeted analytes highlights its potential to reveal new avenues in electroanalytical applications.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"183 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Three-dimensional hierarchical mesoporous rose-like SnSe2/N-doped carbon anode materials for long-life sodium ion batteries","authors":"Zhiya Lin ,&nbsp;Yanan Du ,&nbsp;Zhilong Wu ,&nbsp;Maoxin Yu ,&nbsp;Hai Jia ,&nbsp;Xiaohui Huang ,&nbsp;Shaoming Ying","doi":"10.1016/j.electacta.2025.146149","DOIUrl":"10.1016/j.electacta.2025.146149","url":null,"abstract":"<div><div>Sodium-ion batteries (SIBs) show significant promise for large-scale energy storage applications, owing to their plentiful resources and environmental advantages. However, their practical deployment faces challenges primarily due to inadequate rate performance and cycling stability. A key factor contributing to these issues is the larger size of Na-ions, which leads to diminished structural integrity and slower reaction kinetics. However, ongoing research and development efforts are paving the way for overcoming these challenges, bringing SIBs closer to becoming a viable alternative to Li-ion batteries (LIBs) in various applications. In this study, three-dimensional hierarchical mesoporous rose-like SnSe₂@N-doped carbon (RL-SnSe₂@NC) was fabricated using solvothermal and selenizing techniques. Consequently, RL-SnSe₂@NC demonstrated an exceptionally high specific capacity of 332.8 mA h g^-1 for SIBs at a rate of 5 A g^-1 after 3000 cycles. Ex situ XRD, XPS, HRTEM and SAED analyses were conducted to investigate the changes in crystal structure that occur between sodium (Na) and SnSe₂ during the charge and discharge processes. Furthermore, when paired with Na₃V₂(PO₄)₃ (NVP) as the cathode in a sodium-ion full cell, the optimized configuration featuring RL-SnSe₂@NC as the anode demonstrates outstanding performance. Notably, this remarkable material attains an impressive capacity of 220.9 mAh g^-1 at a current density of 1 A g^-1, operating within the voltage range of 0.5 to 4.0 V.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"525 ","pages":"Article 146149"},"PeriodicalIF":5.5,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochemically deposited quaternary copper-selenium-nickel-cobalt layer electrocatalysts on lyocell-based carbon cloth for the construction of stable overall water splitting","authors":"Su-Hyeong Chae ,&nbsp;Chan Young Lee ,&nbsp;Jae Jun Lee ,&nbsp;Jung Jae Lee ,&nbsp;Hyoju Kim ,&nbsp;Van Huong Tran ,&nbsp;Sung Joo Hong ,&nbsp;Seong Min Yun ,&nbsp;Alagan Muthurasu ,&nbsp;Hye Kyoung Shin","doi":"10.1016/j.electacta.2025.146134","DOIUrl":"10.1016/j.electacta.2025.146134","url":null,"abstract":"<div><div>Controlling the interaction between the anchoring metals and the support has been identified as an effective technique for improving electrocatalytic performance by modifying the electrical structure at the interface. However, the development of distinct support and the insight into interfacial electron accumulation in influencing reaction kinetics remain challenging to achieve. We hereby describe the fabrication of hierarchically structured multi-element electrocatalysts for water splitting, composed of copper (Cu), selenium (Se), nickel (Ni), and cobalt (Co), employing an electrodeposition approach on lyocell-carbon cloth (CuSeNiCo@lyocell-CC). The electrocatalyst takes advantage of its carefully designed nanoarchitecture, which features numerous exposed active sites, abundant charge transfer pathways, and significant porosity to facilitate the release of gas bubbles. The optimized electrodeposited CuSeNiCo@lyocell-CC composite exhibits low overpotentials of 250 mV for the OER and 185 mV for the HER at a current density of 20 mA cm⁻², accompanied by Tafel slopes of 59.3 mV dec⁻¹ for the HER and 65.0 mV dec⁻¹ for the OER. Using these catalysts as anode and cathode electrodes makes it possible to achieve small cell voltages of 1.58 V at current densities of 10 mA cm^-2, allowing for a sustained overall water-splitting process. In addition, it revealed significant durability after prolonged water-splitting activities lasting &gt;50 h. The findings of this study are especially useful for practical applications of the water oxidation process, as they provide precise and insightful information on the preliminary development of robust and effective multifunctional electrocatalysts for total water splitting. This study suggests a strategy for improving multi-element catalysts.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"525 ","pages":"Article 146134"},"PeriodicalIF":5.5,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of temperature on the electrochemical corrosion behavior of Sn-0.7Cu solder alloy in artificial sweat","authors":"Gensheng Wu ,&nbsp;Jianjun Xie ,&nbsp;Xinxin Zhou ,&nbsp;Weiyu Chen ,&nbsp;Bo Yu","doi":"10.1016/j.electacta.2025.146150","DOIUrl":"10.1016/j.electacta.2025.146150","url":null,"abstract":"<div><div>The electrochemical corrosion behavior of Sn-0.7Cu solder alloy in pH4.7 and pH7.8 artificial sweat is investigated at different temperatures. The passivation films are formed in both pH4.7 and pH7.8 artificial sweat, and their barrier properties are characterized using several techniques, including potentiodynamic polarization (PDP), potentiostatic polarization (PSP), electrochemical impedance spectroscopy (EIS) and Mott-Schottky (MS) measurements. The results indicate that the anodic polarization curves for Sn-0.7Cu in artificial sweat at all three temperatures exhibit a stable passivation region with a consistent current density. The Nyquist diagram indicates that the diameters of the capacitance arc of the passivation film formed by Sn-0.7Cu follows the order: 30 °C &gt; 20 °C &gt; 40 °C, under the same applied potential. 3D laser confocal imaging of the corroded surfaces reveals the most compact surface at 30 °C in pH7.8 artificial sweat, which is further confirmed by scanning electron microscope (SEM).</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"525 ","pages":"Article 146150"},"PeriodicalIF":5.5,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of transition metal-doped BaCe0.8Y0.2O3-δ cathodes for protonic ceramic fuel cells: Microstructural and electrical properties","authors":"Amir Sultan ,&nbsp;Michał Gogacz ,&nbsp;Jakub Lach ,&nbsp;Richard T. Baker ,&nbsp;Muhammad Ali Khalid ,&nbsp;Yihan Ling ,&nbsp;Kun Zheng","doi":"10.1016/j.electacta.2025.146127","DOIUrl":"10.1016/j.electacta.2025.146127","url":null,"abstract":"<div><div>Protonic ceramic cathodes have emerged as a vital component for enhancing the efficiency and performance of protonic ceramic fuel cells (PCFCs) due to their excellent protonic conductivity and intermediate operation temperature. In this work, the doping effect of transition metals in BaCe_0.8X_0.1Y_0.1O_3-δ (X = Ni, Co, and Cu, BCXY) perovskites was systematically investigated. The phase analysis via X-ray diffraction (XRD) studies confirmed the development of single-phase perovskite for all doped samples. Transmission electron microscopy (TEM) and Scanning electron microscopy (SEM) were employed to examine the surface morphology, revealing clear and well-defined crystallites. TEM mapping further demonstrated the uniform dispersion of dopants, indicating successful synthesis. X-ray photoelectron spectroscopy (XPS) further validates the elemental composition and purity of the samples. The lowest area-specific resistance (ASR) values were obtained for BCCuY at 750 °C, measuring 0.21 Ω·cm² in dry air and 0.17 Ω·cm² in wet air. The activation energies in wet air atmosphere were found to be in the order of BCCuY (0.64 eV) &lt; BCCoY (0.76 eV) &lt; BCNiY (1.12 eV), within the temperature range of 600 to 750 °C, suggesting that BCCuY has the lowest activation energy and potentially better catalytic activity in these conditions. Considering these results, BCCuY perovskite shows promise as a protonic ceramic cathode for PCFCs. The long-term chemical compatibility evaluation was performed at 800 °C for 100 hrs, which showed that all three electrode materials are chemically compatible with BCZY electrolyte. This work shows the strategy of doping transition metals in BaCeO_3-δ-type oxides could be of great interest for the successful development of novel oxygen electrodes for PCFCs.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"525 ","pages":"Article 146127"},"PeriodicalIF":5.5,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrated method of electrochemical dechlorination of chlorinated aliphatic hydrocarbons in combination with groundwater pumping in highly contaminated groundwater – field application","authors":"Claudia Čičáková, Roman Tóth, Hana Horváthová, Ľubomír Jurkovič, Veronika Špirová, Anton Drábik, Denys Kravchenko","doi":"10.1016/j.electacta.2025.146125","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.146125","url":null,"abstract":"The study deals with the electrochemical degradation of chlorinated aliphatic hydrocarbons (CAHs) at a highly contaminated site. After previous conventional remediation interventions with low efficiency, pilot test was conducted at the site using a progressive method of CAHs electrochemical dechlorination, along with technical optimizations to increase dechlorination efficiency. Pilot test was divided into two phases, each using a different electrode arrangement to identify the optimal configurations for enhancing remediation efficiency. Linear electrode arrangement with a predominance of anodes reached 70–98% degradation efficiency during the 1^st stage. Iron anodes proved more effective than iron cathodes, reaching maximum dechlorination efficiency of 78%. A significant increase in CAHs concentration in one of the most contaminated well indicated significant effects of direct current (DC) on dense non-aquatic phase liquids (DNAPL) movement and distribution, suggesting a link between electrokinetic phenomena and DNAPL migration. After certain time without DC, the 2^nd stage was implemented with triangular electrode arrangement along with pulsed pumping of highly contaminated groundwater. The triangular electrode arrangement was focused to decrease contamination around critically contaminated well where the presence of DNAPL was expected. Pumping sub-stage with anodes situated as outer electrode triangle confirmed the higher efficiency of anodes in the degradation of CAHs. The improvement by pumping increased the degradation rate by about 10–30% depending on the well compared to the non-pumped sub-stage. Nevertheless, triangular arrangement did not reach higher degradation efficiencies compared to linear arrangement. Oxidation-reduction potential (ORP) played a significant role in CAHs removal.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"21 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143723825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochemical performance of electrochemical double layer capacitors containing pyrrolidinium and ammonium fluorosulfonyl imide in acetonitrile-based electrolytes","authors":"Indrajit Mahadev Patil ,&nbsp;Tobias Burton ,&nbsp;Alix Ladam ,&nbsp;Sebastien Fantini ,&nbsp;Andrea Balducci","doi":"10.1016/j.electacta.2025.146133","DOIUrl":"10.1016/j.electacta.2025.146133","url":null,"abstract":"<div><div>In this study, we conducted a comprehensive analysis of the chemical-physical properties of electrolytes containing the ionic liquids N-propyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide [Pyr₁₃FSI] and N-trimethyl-N-propylammonium bis (fluorosulfonyl)imide [N₁₁₁₃FSI] dissolved in acetonitrile (ACN). We showed that these innovative electrolytes display favourable transport and thermal properties. When used as electrolytes in electrical double layer capacitors (EDLCs), they allow the realization of devices with excellent energy and power density values, which can be maintained over a wide temperature range. When charge-discharge cycles are carried out, the stability of EDLCs containing these alternative electrolytes is comparable to that of devices containing conventional electrolytes. However, during float tests, their stability is affected by the occurrence of anodic dissolution of the Al current collectors.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"525 ","pages":"Article 146133"},"PeriodicalIF":5.5,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermal decomposition synthesis of Sr-modified ZnS quantum dots for hydrogen peroxide electrochemical sensing","authors":"Tanatsaparn Tithito ,&nbsp;Pranlekha Traiwatcharanon ,&nbsp;Sarawut Kondee ,&nbsp;Yotsarayuth Seekaew ,&nbsp;Gun Chaloeipote ,&nbsp;Thara Seesaard ,&nbsp;Pakpoom Reunchan ,&nbsp;Weeraphat Pon-On ,&nbsp;Chatchawal Wongchoosuk","doi":"10.1016/j.electacta.2025.146124","DOIUrl":"10.1016/j.electacta.2025.146124","url":null,"abstract":"<div><div>Hydrogen peroxide (H₂O₂) plays a critical role in various biological, environmental, and industrial processes. However, its excessive accumulation poses significant health and ecological risks. This study presents the synthesis of Sr-modified ZnS quantum dots (Sr@ZnS QDs) via a thermal decomposition method and their application as an innovative sensing material for the electrochemical detection of H₂O₂. The synthesized Sr@ZnS QDs exhibit nanoscale uniformity, high crystallinity, and abundant catalytic active sites, making them ideal candidates for sensor applications. The Sr@ZnS QDs were integrated into screen-printed carbon electrodes, resulting in sensors with exceptional performance. Electrochemical analyses, including cyclic voltammetry, differential pulse voltammetry and chronoamperometry, demonstrated a broad linear detection range (1–80 mM), high sensitivity (12.68 μA·mM⁻¹·cm⁻²), and a low detection limit (75.9 μM) at neutral pH. The Sr@ZnS QDs sensor showed excellent selectivity, effectively discriminating H₂O₂ from common interfering species such as NaCl, glucose, and hexane. Furthermore, the proposed catalytic mechanism revealed that the interaction of Sr²⁺ and Zn²⁺ ions with H₂O₂ plays a pivotal role in enhancing the redox reactions. This work introduces Sr@ZnS QDs as a promising material for the development of cost-effective, portable, and high-performance electrochemical sensors. The findings not only advance the field of H₂O₂ sensing but also open new possibilities for the broader application of Sr@ZnS QDs in environmental monitoring, clinical diagnostics, and industrial process control.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"525 ","pages":"Article 146124"},"PeriodicalIF":5.5,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143723829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}