Electroanalysis最新文献

Cover Picture: (Electroanalysis 8/2025) 封面图片：（Electroanalysis 8/2025）

IF 2.3 3区化学

Electroanalysis Pub Date : 2025-07-29 DOI: 10.1002/elan.70035

引用次数: 0

Multi-Walled Carbon Nanotube-Modified Carbon Paste Electrode for Fipronil Detection in Environmental Samples 多壁碳纳米管修饰碳糊电极检测环境样品中的氟虫腈

IF 2.7 3区化学

Electroanalysis Pub Date : 2025-07-27 DOI: 10.1002/elan.70024

Mariane Ribas Lourenço, Guilherme Sales da Rocha, Daniel Ananias Reis de Campos, Helen Conceição Ferraz, João Victor Nicolini

{"title":"Multi-Walled Carbon Nanotube-Modified Carbon Paste Electrode for Fipronil Detection in Environmental Samples","authors":"Mariane Ribas Lourenço, Guilherme Sales da Rocha, Daniel Ananias Reis de Campos, Helen Conceição Ferraz, João Victor Nicolini","doi":"10.1002/elan.70024","DOIUrl":"https://doi.org/10.1002/elan.70024","url":null,"abstract":"Fipronil (FIP) is a pesticide widely used for controlling soil pests and preventing parasitic infestations in dogs. However, its widespread and often indiscriminate application has led to contamination of aquatic environments in several countries, including Brazil, highlighting the need for new methodologies to detect its residues in food and the environment. This study aimed to develop a nanostructured carbon paste sensor using multi-walled carbon nanotubes (MWCNTs) to detect FIP. Deposition of nanomaterials, such as MWCNTs, into electrochemical sensors can significantly enhance their performance. Their unique attributes, including a high surface-to-volume ratio and excellent electrical conductivity, are key to this improvement. The carbon paste electrode was modified with 20% w/w MWCNT, demonstrating the best electrochemical response as confirmed by cyclic voltammetry. Square wave voltammetry enabled the detection of FIP with a limit of detection of 0.377 µmol L−1 and a limit of quantification of 1.26 µmol L−1. Interference studies were conducted using potential interferents, including Atrazine, NaCl, KCl, CaCl2, FeCl3, and ZnCl2, yielding a relative standard deviation of around 6%. Additionally, the sensor stability was evaluated over 22 days, showing only a 2.6% reduction in the peak current. This sensor was successfully used to detect FIP in tap water samples with good recoveries of 101.8–104%. Thus, the use of MWCNTs proved highly promising for developing electrochemical sensors for FIP detection due to their hydrophobic nature, which facilitates the adsorption of FIP molecules onto the electrode surface.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"37 7","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elan.70024","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144714931","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}

引用次数: 0

Multi-Walled Carbon Nanotube-Modified Carbon Paste Electrode for Fipronil Detection in Environmental Samples 多壁碳纳米管修饰碳糊电极检测环境样品中的氟虫腈

IF 2.7 3区化学

Electroanalysis Pub Date : 2025-07-27 DOI: 10.1002/elan.70024

Mariane Ribas Lourenço, Guilherme Sales da Rocha, Daniel Ananias Reis de Campos, Helen Conceição Ferraz, João Victor Nicolini

{"title":"Multi-Walled Carbon Nanotube-Modified Carbon Paste Electrode for Fipronil Detection in Environmental Samples","authors":"Mariane Ribas Lourenço, Guilherme Sales da Rocha, Daniel Ananias Reis de Campos, Helen Conceição Ferraz, João Victor Nicolini","doi":"10.1002/elan.70024","DOIUrl":"https://doi.org/10.1002/elan.70024","url":null,"abstract":"Fipronil (FIP) is a pesticide widely used for controlling soil pests and preventing parasitic infestations in dogs. However, its widespread and often indiscriminate application has led to contamination of aquatic environments in several countries, including Brazil, highlighting the need for new methodologies to detect its residues in food and the environment. This study aimed to develop a nanostructured carbon paste sensor using multi-walled carbon nanotubes (MWCNTs) to detect FIP. Deposition of nanomaterials, such as MWCNTs, into electrochemical sensors can significantly enhance their performance. Their unique attributes, including a high surface-to-volume ratio and excellent electrical conductivity, are key to this improvement. The carbon paste electrode was modified with 20% w/w MWCNT, demonstrating the best electrochemical response as confirmed by cyclic voltammetry. Square wave voltammetry enabled the detection of FIP with a limit of detection of 0.377 µmol L−1 and a limit of quantification of 1.26 µmol L−1. Interference studies were conducted using potential interferents, including Atrazine, NaCl, KCl, CaCl2, FeCl3, and ZnCl2, yielding a relative standard deviation of around 6%. Additionally, the sensor stability was evaluated over 22 days, showing only a 2.6% reduction in the peak current. This sensor was successfully used to detect FIP in tap water samples with good recoveries of 101.8–104%. Thus, the use of MWCNTs proved highly promising for developing electrochemical sensors for FIP detection due to their hydrophobic nature, which facilitates the adsorption of FIP molecules onto the electrode surface.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"37 7","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elan.70024","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144714932","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}

引用次数: 0

Metal Organic Framework-Derived Cobalt-Supported Nitrogen-Doped Carbon Nanocages Nanocomposite for Sensitive Electrochemical Detection of Ornidazole 金属有机骨架衍生钴负载氮掺杂碳纳米笼纳米复合材料用于奥硝唑的灵敏电化学检测

IF 2.7 3区化学

Electroanalysis Pub Date : 2025-07-25 DOI: 10.1002/elan.70011

Jie Zhou, Qi Lou, Yan Li, Yanjing Zhang, Guanpu Zeng, Rui Lv, Jin Li, Jing Lan, Yaru Li, Zongshan Zhao

{"title":"Metal Organic Framework-Derived Cobalt-Supported Nitrogen-Doped Carbon Nanocages Nanocomposite for Sensitive Electrochemical Detection of Ornidazole","authors":"Jie Zhou, Qi Lou, Yan Li, Yanjing Zhang, Guanpu Zeng, Rui Lv, Jin Li, Jing Lan, Yaru Li, Zongshan Zhao","doi":"10.1002/elan.70011","DOIUrl":"https://doi.org/10.1002/elan.70011","url":null,"abstract":"The overuse of ornidazole (ODZ) can cause imbalances in thehuman microbiome system and lead to the emergence of antibiotic-resistant bacteria. Therefore, developing sensitive and rapid methods for detecting ODZ has been of concern. In this article, metal organic framework-derived cobalt-supported nitrogen-doped carbon nanocages (Co@CN-CNTs) were prepared for sensitive electrochemical detection of ODZ. Electrodes prepared using Co@CN-CNTs (Co@CN-CNTs/GCE) had good electrochemical current response to ODZ and exhibited a wide detection range for ODZ, from 60 nM to 45 μM, with a low limit of detection (LOD) of 6.7 nM. The sensor showed excellent performance toward detecting ODZ, with recovery rates ranging from 96.36% to 104.00% when detecting tap water, river water and fruit samples. Moreover, the sensor also presented satisfactory repeatability and excellent selectivity towards ODZ by minimizing the risk of false positives or interferences from other compounds. Overall, the Co@CN-CNTs/GCE sensor provided a low cost and rapid method for detection of ODZ in environmental samples.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"37 7","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144705138","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}

引用次数: 0

A Compact Spectroelectrochemical Flow Cell for In Situ Sum Frequency Generation Investigation of the Electrolyte/Electrode Interface 用于电解液/电极界面原位和频率生成研究的紧凑型光谱电化学流动电池

IF 2.7 3区化学

Electroanalysis Pub Date : 2025-07-25 DOI: 10.1002/elan.70025

Xiao-Lin Liu, Hao Huang, Heng-Yan Zheng, Yu-Han He, Zhao-Hui Wang

引用次数: 0

Room-Temperature Co-Precipitation Synthesis of Magnetite Nanoparticles and Application as Electrocatalytic Platform for Agricultural Pesticides Sensing in Water 室温共沉淀法合成纳米磁铁矿及其在水中农药感应电催化平台中的应用

IF 2.7 3区化学

Electroanalysis Pub Date : 2025-07-25 DOI: 10.1002/elan.70022

Sengor Gabou Fogang, Ranil Clement Tonleu Temgoua, Marcel Cédric Deussi Ngaha, Victor Kougoum Tchieda, Cyrille Ghislain Fotsop, Lionnel Averie Vomo, Georges Teikam Kenda, Yvanne Peguy Ngueko Makengue, Gullit Deffo, Evangeline Njanja

{"title":"Room-Temperature Co-Precipitation Synthesis of Magnetite Nanoparticles and Application as Electrocatalytic Platform for Agricultural Pesticides Sensing in Water","authors":"Sengor Gabou Fogang, Ranil Clement Tonleu Temgoua, Marcel Cédric Deussi Ngaha, Victor Kougoum Tchieda, Cyrille Ghislain Fotsop, Lionnel Averie Vomo, Georges Teikam Kenda, Yvanne Peguy Ngueko Makengue, Gullit Deffo, Evangeline Njanja","doi":"10.1002/elan.70022","DOIUrl":"https://doi.org/10.1002/elan.70022","url":null,"abstract":"This work presents a straightforward room-temperature co-precipitation method for the synthesis of magnetite nanoparticles (Fe3O4NPs) and application as electrocatalytic material for the simultaneous determination of diuron (DR) and thiabendazole (TBZ) pesticides in water for the first time. The Fe3O4NPs were synthesized using an aqueous-based approach and immobilized onto a glassy carbon electrode (GCE) surface. Comprehensive characterization using Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, energy dispersive X-ray, cyclic voltammetry (CV), and electrochemical impedance spectroscopy have confirmed the successful formation of well-crystallized Fe3O4NPs with an average crystallinity size of 61.62 nm. Electrochemical studies demonstrated strong electrostatic interactions between GCE/Fe3O4NPs and [Ru(NH3)6]3+. The electrochemical behavior of both pesticides were established by CV, while sensing parameters were optimized through differential pulse voltammetry. Under optimal conditions, the sensor achieved detection limits of 0.398 and 0.480 μM for DR and TBZ, respectively, with good selectivity and reproducibility. The practical utility of the sensor was successfully demonstrated through analysis of real water samples, offering a cost-effective solution for environmental monitoring applications.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"37 7","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144705675","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}

引用次数: 0

Metal Organic Framework-Derived Cobalt-Supported Nitrogen-Doped Carbon Nanocages Nanocomposite for Sensitive Electrochemical Detection of Ornidazole 金属有机骨架衍生钴负载氮掺杂碳纳米笼纳米复合材料用于奥硝唑的灵敏电化学检测

IF 2.7 3区化学

Electroanalysis Pub Date : 2025-07-25 DOI: 10.1002/elan.70011

Jie Zhou, Qi Lou, Yan Li, Yanjing Zhang, Guanpu Zeng, Rui Lv, Jin Li, Jing Lan, Yaru Li, Zongshan Zhao

{"title":"Metal Organic Framework-Derived Cobalt-Supported Nitrogen-Doped Carbon Nanocages Nanocomposite for Sensitive Electrochemical Detection of Ornidazole","authors":"Jie Zhou, Qi Lou, Yan Li, Yanjing Zhang, Guanpu Zeng, Rui Lv, Jin Li, Jing Lan, Yaru Li, Zongshan Zhao","doi":"10.1002/elan.70011","DOIUrl":"https://doi.org/10.1002/elan.70011","url":null,"abstract":"The overuse of ornidazole (ODZ) can cause imbalances in thehuman microbiome system and lead to the emergence of antibiotic-resistant bacteria. Therefore, developing sensitive and rapid methods for detecting ODZ has been of concern. In this article, metal organic framework-derived cobalt-supported nitrogen-doped carbon nanocages (Co@CN-CNTs) were prepared for sensitive electrochemical detection of ODZ. Electrodes prepared using Co@CN-CNTs (Co@CN-CNTs/GCE) had good electrochemical current response to ODZ and exhibited a wide detection range for ODZ, from 60 nM to 45 μM, with a low limit of detection (LOD) of 6.7 nM. The sensor showed excellent performance toward detecting ODZ, with recovery rates ranging from 96.36% to 104.00% when detecting tap water, river water and fruit samples. Moreover, the sensor also presented satisfactory repeatability and excellent selectivity towards ODZ by minimizing the risk of false positives or interferences from other compounds. Overall, the Co@CN-CNTs/GCE sensor provided a low cost and rapid method for detection of ODZ in environmental samples.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"37 7","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144705677","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}

引用次数: 0

Exploring the Use of Different Carbon Materials Within Additive Manufactured Electrodes: The Sensing of Carbendazim 探索不同碳材料在增材制造电极中的使用：多菌灵的传感

IF 2.7 3区化学

Electroanalysis Pub Date : 2025-07-25 DOI: 10.1002/elan.70016

Muhzamil A. Khan, Robert D. Crapnell, Elena Bernalte, Bill Logan Riehl, Samuel J. Rowley-Neale, Craig E. Banks

{"title":"Exploring the Use of Different Carbon Materials Within Additive Manufactured Electrodes: The Sensing of Carbendazim","authors":"Muhzamil A. Khan, Robert D. Crapnell, Elena Bernalte, Bill Logan Riehl, Samuel J. Rowley-Neale, Craig E. Banks","doi":"10.1002/elan.70016","DOIUrl":"https://doi.org/10.1002/elan.70016","url":null,"abstract":"Additive manufacturing is emerging as a technology utilised within the field of electrochemistry, where researchers need to understand the electrochemical capabilities of the electrodes produced. One aspect yet to be fully explored is the effect of using different carbon morphologies and how these differences affect the electrochemical performance. It is understood that edge plane defects are the site of electrochemical activity, therefore, quantifying these defect sites will allow for determination of which morphology is most advantageous. Various filaments containing different morphologies were produced in combination with carbon black (CB) using multiwalled carbon nanotubes (MWCNTs), carbon nanotube clusters, and graphite. All electrodes were subject to physicochemical characterisation using scanning electron microscopy, Raman, and X-ray photoelectron spectroscopy. MWCNTs in combination with CB produced a high performing electrically conductive filament, which showed improved electrochemical performance compared to other bespoke filaments with a heterogenous electron transfer of k0obs of 3.22 (±0.16) x 10−3 cm s−1. The filament containing MWCNTs was also found to show the largest density of edge plane sites of 0.81% and was closest to that of a glassy carbon electrode. All electrodes were successfully tested for the detection of carbendazim producing linear ranges between 5 and 40 μM. The MWCNT filament also exhibited the best electroanalytical performance, showing a limit of detection of 0.26 μM and limit of quantification of 0.88 μM, as well as achieving a recovery of 114% in a river water sample. This work proves that the edge plane defect sites are the site of electrochemical activity within additive manufactured electrodes and should be considered when designing new materials.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"37 7","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elan.70016","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144705676","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}

引用次数: 0

A Compact Spectroelectrochemical Flow Cell for In Situ Sum Frequency Generation Investigation of the Electrolyte/Electrode Interface 用于电解液/电极界面原位和频率生成研究的紧凑型光谱电化学流动电池

IF 2.7 3区化学

Electroanalysis Pub Date : 2025-07-25 DOI: 10.1002/elan.70025

Xiao-Lin Liu, Hao Huang, Heng-Yan Zheng, Yu-Han He, Zhao-Hui Wang

引用次数: 0

Room-Temperature Co-Precipitation Synthesis of Magnetite Nanoparticles and Application as Electrocatalytic Platform for Agricultural Pesticides Sensing in Water 室温共沉淀法合成纳米磁铁矿及其在水中农药感应电催化平台中的应用

IF 2.7 3区化学

Electroanalysis Pub Date : 2025-07-25 DOI: 10.1002/elan.70022

Sengor Gabou Fogang, Ranil Clement Tonleu Temgoua, Marcel Cédric Deussi Ngaha, Victor Kougoum Tchieda, Cyrille Ghislain Fotsop, Lionnel Averie Vomo, Georges Teikam Kenda, Yvanne Peguy Ngueko Makengue, Gullit Deffo, Evangeline Njanja

{"title":"Room-Temperature Co-Precipitation Synthesis of Magnetite Nanoparticles and Application as Electrocatalytic Platform for Agricultural Pesticides Sensing in Water","authors":"Sengor Gabou Fogang, Ranil Clement Tonleu Temgoua, Marcel Cédric Deussi Ngaha, Victor Kougoum Tchieda, Cyrille Ghislain Fotsop, Lionnel Averie Vomo, Georges Teikam Kenda, Yvanne Peguy Ngueko Makengue, Gullit Deffo, Evangeline Njanja","doi":"10.1002/elan.70022","DOIUrl":"https://doi.org/10.1002/elan.70022","url":null,"abstract":"This work presents a straightforward room-temperature co-precipitation method for the synthesis of magnetite nanoparticles (Fe3O4NPs) and application as electrocatalytic material for the simultaneous determination of diuron (DR) and thiabendazole (TBZ) pesticides in water for the first time. The Fe3O4NPs were synthesized using an aqueous-based approach and immobilized onto a glassy carbon electrode (GCE) surface. Comprehensive characterization using Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, energy dispersive X-ray, cyclic voltammetry (CV), and electrochemical impedance spectroscopy have confirmed the successful formation of well-crystallized Fe3O4NPs with an average crystallinity size of 61.62 nm. Electrochemical studies demonstrated strong electrostatic interactions between GCE/Fe3O4NPs and [Ru(NH3)6]3+. The electrochemical behavior of both pesticides were established by CV, while sensing parameters were optimized through differential pulse voltammetry. Under optimal conditions, the sensor achieved detection limits of 0.398 and 0.480 μM for DR and TBZ, respectively, with good selectivity and reproducibility. The practical utility of the sensor was successfully demonstrated through analysis of real water samples, offering a cost-effective solution for environmental monitoring applications.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"37 7","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144705679","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}

引用次数: 0