Electroanalysis最新文献

{"title":"MoC-Modified Metalorganic Framework-Derived Materials Facilitating Dendrite-Free Deposition of Lithium Metal","authors":"Xuhai Pan,&nbsp;Yahong Liu,&nbsp;Hao Shen,&nbsp;Zhixiang Chen,&nbsp;Yucheng Zhu,&nbsp;Hao Ji,&nbsp;Min Hua,&nbsp;Juncheng Jiang","doi":"10.1002/elan.12053","DOIUrl":"https://doi.org/10.1002/elan.12053","url":null,"abstract":"<p>In order to solve the problem of lithium dendrites, which leads to safety problems in lithium-ion batteries, this article starts from the perspective of the substrate itself. The excellent anode material MoC@Cu@C synthesised in the previous stage was compounded with lithium metal by electrochemical deposition. The lithium dendrite inhibition effect, inhibition mechanism and electrochemical performance of the composite anode are then investigated. Thanks to the lithiophilic nature of the nitrogen-doped organic functional groups of the MoC@Cu@C matrix, lithium metal can be uniformly deposited on the surface of the MoC@Cu@C matrix. The synergistic effect of the surface-rich carbon matrix and Cu nanoparticles enhances the migration rate of Li⁺ on the one hand and effectively inhibits the volume expansion of Li metal on the other. The LFP/MoC@Cu@C–Li full cell has excellent cycling stability and rate performance. It has a specific capacity of 100 mAh g⁻¹ even after 150 cycles at a rate of 1 C. The Coulombic efficiency of the entire cycle is also close to 100% and stable cycling is guaranteed even at high current densities of 10 C.</p>","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"37 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938950","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":"Chemically Deposited Boron-Doped Diamond Screen-Printed Electrodes for the Detection of Manganese","authors":"Larissa M. A. Melo,&nbsp;Elena Bernalte,&nbsp;Robert D. Crapnell,&nbsp;Marian Vojs,&nbsp;Marian Marton,&nbsp;Michal Hatala,&nbsp;Rodrigo A. A. Muñoz,&nbsp;Wallans T. P. dos Santos,&nbsp;Craig E. Banks","doi":"10.1002/elan.12054","DOIUrl":"https://doi.org/10.1002/elan.12054","url":null,"abstract":"<p>Manganese (Mn²⁺) is widely used in industrial applications, including steel production, battery manufacturing, and fertilizers. These activities, along with natural processes, contribute to its presence in environmental water. This study investigates the electrochemical behavior of manganese using laboratory-fabricated screen-printed carbon electrodes (SPEs) combining diamond (D), carbon black (CB), and boron-doped diamond (BDD) in eight different configurations: D + BDD, first layer (L1): CB + second layer (L2): D + BDD, CB + D + BDD, or CB pure, each of them with a chlorinated or plain <i>pseudo</i>-reference. The screen-printed electrodes were characterized physicochemically and electrochemically, with their electroactive areas and electron transfer resistances calculated to select the best configuration for the electroanalytical application. A voltammetric screening method for Mn²⁺ using differential pulse cathodic stripping voltammetry was developed with no preconcentration required with the SPEs L1: CB + L2: D + BDD (chlorinated) and CB + D + BDD (plain). The method exhibited broad linear ranges (1–100 and 10–100 µM) and low limits of detections (0.18 and 0.06 µM), for each SPE configuration, respectively, making it suitable for detecting Mn²⁺ in contaminated environmental water samples. The electrochemical responses showed good stability across all SPEs produced, with a relative standard deviation of less than 10% (<i>N</i> = 3), whether using the same or different electrodes. Interference studies with other metals confirmed the high selectivity of the proposed sensor. Additionally, Mn²⁺ was successfully detected in spiked river and lake water samples, achieving recoveries close to 100%. The analytical performance demonstrates strong potential as a simple, rapid, and selective screening method for manganese detection in environmental samples.</p>","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"37 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elan.12054","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Voltammetric Determination of Chloramphenicol Based on Glassy Carbon Electrode Modified With 3,6-Diethynyl-9H-Carbazole Electrodeposited Functional Layer","authors":"Tatiana S. Svalova,&nbsp;Daria I. Antipina,&nbsp;Anna A. Saigushkina,&nbsp;Natalya N. Malysheva,&nbsp;Timofey D. Moseev,&nbsp;Yuriy A. Kvashnin,&nbsp;Denis A. Gazizov,&nbsp;Yuriy I. Kuzin,&nbsp;Egor V. Verbitskiy,&nbsp;Mikhail V. Varaksin,&nbsp;Oleg N. Chupakhin,&nbsp;Gennady A. Evtugyn,&nbsp;Alisa N. Kozitsina","doi":"10.1002/elan.12055","DOIUrl":"https://doi.org/10.1002/elan.12055","url":null,"abstract":"<p>In this paper, we present an original approach for the voltammetric determination of the antibiotic chloramphenicol on a glassy carbon electrode modified with carbon nanotubes and an electrodeposited layer based on 3,6-diethynyl-9H-carbazole used as a molecular recognition agent. The analytical signal was detected by the electrochemical reduction current of the analyte using differential pulse voltammetry. The nature of the intermolecular interaction of chloramphenicol and 3,6-diethynyl-9H-carbazole was studied using molecular absorption and fluorescence spectroscopy, as well as high-performance liquid chromatography. A molecular mechanism of interaction between the recognition agent and the analyte based on the <i>N</i>-alkylation of carbazole with chloramphenicol was proposed. An original approach has been developed for the surface modification of a glassy carbon electrode with carbon nanotubes and the electrodeposition of 3,6-diethynyl-9H-carbazole. Under chosen operating conditions the developed approach allows the voltammetric determination of chloramphenicol with a linear range of detectable concentrations between 0.1 and 1000 µM and a detection limit of 0.02 µM, which are comparable in sensitivity to other methods described in the literature. It has been successfully tested on both model solutions and real samples of milk.</p>","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"37 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938951","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":"MoC-Modified Metalorganic Framework-Derived Materials Facilitating Dendrite-Free Deposition of Lithium Metal","authors":"Xuhai Pan,&nbsp;Yahong Liu,&nbsp;Hao Shen,&nbsp;Zhixiang Chen,&nbsp;Yucheng Zhu,&nbsp;Hao Ji,&nbsp;Min Hua,&nbsp;Juncheng Jiang","doi":"10.1002/elan.12053","DOIUrl":"https://doi.org/10.1002/elan.12053","url":null,"abstract":"<p>In order to solve the problem of lithium dendrites, which leads to safety problems in lithium-ion batteries, this article starts from the perspective of the substrate itself. The excellent anode material MoC@Cu@C synthesised in the previous stage was compounded with lithium metal by electrochemical deposition. The lithium dendrite inhibition effect, inhibition mechanism and electrochemical performance of the composite anode are then investigated. Thanks to the lithiophilic nature of the nitrogen-doped organic functional groups of the MoC@Cu@C matrix, lithium metal can be uniformly deposited on the surface of the MoC@Cu@C matrix. The synergistic effect of the surface-rich carbon matrix and Cu nanoparticles enhances the migration rate of Li⁺ on the one hand and effectively inhibits the volume expansion of Li metal on the other. The LFP/MoC@Cu@C–Li full cell has excellent cycling stability and rate performance. It has a specific capacity of 100 mAh g⁻¹ even after 150 cycles at a rate of 1 C. The Coulombic efficiency of the entire cycle is also close to 100% and stable cycling is guaranteed even at high current densities of 10 C.</p>","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"37 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939211","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":"Voltammetric Determination of Chloramphenicol Based on Glassy Carbon Electrode Modified With 3,6-Diethynyl-9H-Carbazole Electrodeposited Functional Layer","authors":"Tatiana S. Svalova,&nbsp;Daria I. Antipina,&nbsp;Anna A. Saigushkina,&nbsp;Natalya N. Malysheva,&nbsp;Timofey D. Moseev,&nbsp;Yuriy A. Kvashnin,&nbsp;Denis A. Gazizov,&nbsp;Yuriy I. Kuzin,&nbsp;Egor V. Verbitskiy,&nbsp;Mikhail V. Varaksin,&nbsp;Oleg N. Chupakhin,&nbsp;Gennady A. Evtugyn,&nbsp;Alisa N. Kozitsina","doi":"10.1002/elan.12055","DOIUrl":"https://doi.org/10.1002/elan.12055","url":null,"abstract":"<p>In this paper, we present an original approach for the voltammetric determination of the antibiotic chloramphenicol on a glassy carbon electrode modified with carbon nanotubes and an electrodeposited layer based on 3,6-diethynyl-9H-carbazole used as a molecular recognition agent. The analytical signal was detected by the electrochemical reduction current of the analyte using differential pulse voltammetry. The nature of the intermolecular interaction of chloramphenicol and 3,6-diethynyl-9H-carbazole was studied using molecular absorption and fluorescence spectroscopy, as well as high-performance liquid chromatography. A molecular mechanism of interaction between the recognition agent and the analyte based on the <i>N</i>-alkylation of carbazole with chloramphenicol was proposed. An original approach has been developed for the surface modification of a glassy carbon electrode with carbon nanotubes and the electrodeposition of 3,6-diethynyl-9H-carbazole. Under chosen operating conditions the developed approach allows the voltammetric determination of chloramphenicol with a linear range of detectable concentrations between 0.1 and 1000 µM and a detection limit of 0.02 µM, which are comparable in sensitivity to other methods described in the literature. It has been successfully tested on both model solutions and real samples of milk.</p>","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"37 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939339","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":"Chemically Deposited Boron-Doped Diamond Screen-Printed Electrodes for the Detection of Manganese","authors":"Larissa M. A. Melo,&nbsp;Elena Bernalte,&nbsp;Robert D. Crapnell,&nbsp;Marian Vojs,&nbsp;Marian Marton,&nbsp;Michal Hatala,&nbsp;Rodrigo A. A. Muñoz,&nbsp;Wallans T. P. dos Santos,&nbsp;Craig E. Banks","doi":"10.1002/elan.12054","DOIUrl":"https://doi.org/10.1002/elan.12054","url":null,"abstract":"<p>Manganese (Mn²⁺) is widely used in industrial applications, including steel production, battery manufacturing, and fertilizers. These activities, along with natural processes, contribute to its presence in environmental water. This study investigates the electrochemical behavior of manganese using laboratory-fabricated screen-printed carbon electrodes (SPEs) combining diamond (D), carbon black (CB), and boron-doped diamond (BDD) in eight different configurations: D + BDD, first layer (L1): CB + second layer (L2): D + BDD, CB + D + BDD, or CB pure, each of them with a chlorinated or plain <i>pseudo</i>-reference. The screen-printed electrodes were characterized physicochemically and electrochemically, with their electroactive areas and electron transfer resistances calculated to select the best configuration for the electroanalytical application. A voltammetric screening method for Mn²⁺ using differential pulse cathodic stripping voltammetry was developed with no preconcentration required with the SPEs L1: CB + L2: D + BDD (chlorinated) and CB + D + BDD (plain). The method exhibited broad linear ranges (1–100 and 10–100 µM) and low limits of detections (0.18 and 0.06 µM), for each SPE configuration, respectively, making it suitable for detecting Mn²⁺ in contaminated environmental water samples. The electrochemical responses showed good stability across all SPEs produced, with a relative standard deviation of less than 10% (<i>N</i> = 3), whether using the same or different electrodes. Interference studies with other metals confirmed the high selectivity of the proposed sensor. Additionally, Mn²⁺ was successfully detected in spiked river and lake water samples, achieving recoveries close to 100%. The analytical performance demonstrates strong potential as a simple, rapid, and selective screening method for manganese detection in environmental samples.</p>","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"37 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elan.12054","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aptamer-Functionalized Screen-Printed Carbon Electrodes Coated with Polymerized Catecholamine Film for Capacitive Sensing of Acetamiprid","authors":"Abdulhadi H. Almarri","doi":"10.1002/elan.12056","DOIUrl":"https://doi.org/10.1002/elan.12056","url":null,"abstract":"<p>The detection of acetamiprid (ACE) residues remains a critical challenge in environmental and food safety monitoring. Herein, a novel biosensing platform is presented, based on screen-printed carbon electrodes (SPCEs) modified with an electrodeposited catecholamine film and a specific anti-ACE aptamer as the biorecognition element. The electroactive polymeric film was electrochemically deposited onto the SPCE surface, providing enhanced electron transfer properties and increased electroactive surface area. The subsequent immobilization of an anti-ACE aptamer created a selective biosensing interface. Using redox capacitance spectroscopy, it is demonstrated that the interaction between ACE and the biomodified electrode surface induced measurable changes in interfacial charge distribution and capacitance. The biosensor exhibited a linear response across a wide dynamic range of ACE concentrations (1 fg·mL⁻¹ to 10 pg·mL⁻¹), with a detection limit of 0.57 fg·mL⁻¹ (∼2.56 aM) (S/N = 3). The practical utility of the sensor was validated through recovery studies on lettuce and tomatoes, demonstrating its potential for routine ACE monitoring in vegetables. This label-free electrochemical approach offers a promising platform for the rapid and sensitive detection of pesticides in complex matrices.</p>","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"37 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143932358","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":"Aptamer-Functionalized Screen-Printed Carbon Electrodes Coated with Polymerized Catecholamine Film for Capacitive Sensing of Acetamiprid","authors":"Abdulhadi H. Almarri","doi":"10.1002/elan.12056","DOIUrl":"https://doi.org/10.1002/elan.12056","url":null,"abstract":"<p>The detection of acetamiprid (ACE) residues remains a critical challenge in environmental and food safety monitoring. Herein, a novel biosensing platform is presented, based on screen-printed carbon electrodes (SPCEs) modified with an electrodeposited catecholamine film and a specific anti-ACE aptamer as the biorecognition element. The electroactive polymeric film was electrochemically deposited onto the SPCE surface, providing enhanced electron transfer properties and increased electroactive surface area. The subsequent immobilization of an anti-ACE aptamer created a selective biosensing interface. Using redox capacitance spectroscopy, it is demonstrated that the interaction between ACE and the biomodified electrode surface induced measurable changes in interfacial charge distribution and capacitance. The biosensor exhibited a linear response across a wide dynamic range of ACE concentrations (1 fg·mL⁻¹ to 10 pg·mL⁻¹), with a detection limit of 0.57 fg·mL⁻¹ (∼2.56 aM) (S/N = 3). The practical utility of the sensor was validated through recovery studies on lettuce and tomatoes, demonstrating its potential for routine ACE monitoring in vegetables. This label-free electrochemical approach offers a promising platform for the rapid and sensitive detection of pesticides in complex matrices.</p>","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"37 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143932359","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":"Electropolymerized Molecularly Imprinted Poly(L-Phenylalanine) Modified Lab-Made Screen-Printed Carbon Electrode for Voltammetric Analysis of Acetaminophen","authors":"Maria Paula Campestrini Féo,&nbsp;Thaynara Dannehl Hoppe,&nbsp;Daniela Brondani","doi":"10.1002/elan.12047","DOIUrl":"https://doi.org/10.1002/elan.12047","url":null,"abstract":"<p>A selective molecularly imprinted polymer (MIP) sensor was constructed on a lab-made screen-printed carbon electrode (SPCE) for the electrochemical determination of acetaminophen (AP). Different conductive carbon inks have been investigated for SPCE production. The sensor was prepared by direct electropolymerization of the <i>L</i>-phenylalanine on bare SPCE in the presence of the template molecule (AP). Physicochemical and morphological characterization studies of the sensor preparation steps were performed, including scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), conductivity, contact angle, electrochemical impedance spectroscopy (EIS), and cyclic voltammetry (CV). Under optimized experimental conditions, the differential pulse voltammetry (DPV) response was linearly proportional to the AP concentration between 0.2 and 100 μmol L⁻¹ with a limit of detection (LOD) of 30 nmol L⁻¹. The MIP sensor showed good analytical performance, selectivity, and stability. Also, it was successfully used to quantify AP in fortified water samples.</p>","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"37 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elan.12047","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143925893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electropolymerized Molecularly Imprinted Poly(L-Phenylalanine) Modified Lab-Made Screen-Printed Carbon Electrode for Voltammetric Analysis of Acetaminophen","authors":"Maria Paula Campestrini Féo,&nbsp;Thaynara Dannehl Hoppe,&nbsp;Daniela Brondani","doi":"10.1002/elan.12047","DOIUrl":"https://doi.org/10.1002/elan.12047","url":null,"abstract":"<p>A selective molecularly imprinted polymer (MIP) sensor was constructed on a lab-made screen-printed carbon electrode (SPCE) for the electrochemical determination of acetaminophen (AP). Different conductive carbon inks have been investigated for SPCE production. The sensor was prepared by direct electropolymerization of the <i>L</i>-phenylalanine on bare SPCE in the presence of the template molecule (AP). Physicochemical and morphological characterization studies of the sensor preparation steps were performed, including scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), conductivity, contact angle, electrochemical impedance spectroscopy (EIS), and cyclic voltammetry (CV). Under optimized experimental conditions, the differential pulse voltammetry (DPV) response was linearly proportional to the AP concentration between 0.2 and 100 μmol L⁻¹ with a limit of detection (LOD) of 30 nmol L⁻¹. The MIP sensor showed good analytical performance, selectivity, and stability. Also, it was successfully used to quantify AP in fortified water samples.</p>","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"37 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elan.12047","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143925894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}